Data Quality Reports for Session: 120381 User: thornpig Completed: 06/20/2009


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000219.1SGP/SONDE/C1 - Incorrect surface temperaturesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000308.1SGP/SONDE - Questionable absolute pressuressgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000308.2SGP/SONDE - Questionable absolute pressuressgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000319.1SGP/SONDE - Data missing from soundingsgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D000625.1SGP/SONDE/C1 - Operator used wrong calibration tapesgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondewndcalcC1.c1, sgpsondewrpnC1.00,
sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000801.2SGP/SONDE/C1 - Incorrect absolute pressuresgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D001107.1SGP/SONDE/C1 - Incorrect surface temperaturesgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D940804.1Possible error in humidity ground checksgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941104.1Bad surface RH value in soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941108.2Bad surface RH value in soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941108.4CF Sonde Ground Check CorrectionssgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941213.1Questionable initial values sounding 941209:1133sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950109.1Questionable surface value 1/2/95 11:32sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950109.2Questionable surface value 1/3/95 11:29sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950304.1Reprocess: Sounding 950222:0530 done in research modesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950310.1Bad surface values in sounding 3/9/95:0530sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950316.1Reprocess: Sounding 950315:1429 done in research modesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950417.1Reprocess: Sounding 950413:1130 done in research modesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950419.1Bad surface values in sounding 4/17/95 14:29sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950722.1Reprocess: Sounding done in research modesgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D950722.2Reprocess: Sounding done in research modesgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D950723.1Reprocess: Sounding done in research modesgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D950815.4SGP/SONDE/B1 - Reprocess: sonde RESEARCH mode altitudes biased lowsgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D950816.5bad surface tdry value in sounding 17:55sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.1Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.2Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.3Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.4Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.5Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.6Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960122.1Jump in pressure value upon launchsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960122.2Jump in pressure value upon launchsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960129.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960202.2bad pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960221.1signal interruptionsgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D960223.1Incorrect surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960223.2Incorrect surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960229.1SGP/SONDE/B5 - incorrect factory RH calib-radiosondessgpsondewrpnB5.a0, sgpsondewrpnB5.a1
D960229.2SGP/SONDE/C1 - incorrect factory RH calib-radiosondessgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960229.3SGP/SONDE/B1 - incorrect factory RH calib-radiosondessgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D960403.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960415.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960506.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960602.2bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960611.3bad surface values soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960701.4Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960706.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960806.1Bad surface pressure soundingsgpsondewrpnB5.a0, sgpsondewrpnB5.a1
D960807.1Questionable surface pressure soundingsgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D960809.1Questionable surface pressure soundingsgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D960913.1bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960913.2bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960913.3bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960913.5bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960927.2Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D970111.1Incorrect surface temperaturesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D970318.1Incorrect surface pressuresgpsondewrpnB5.a1
D970318.2Questionable RHsgpsondewrpnC1.a1
D970410.5Reprocess: Jump in pressure valuesgpsondewrpnB5.a1
D970507.2Jump in pressure valuesgpsondewrpnC1.a1
D970507.3Corrupted and missing datasgpsondewrpnB5.a1
D970624.2Incorrect surface valuessgpsondewrpnC1.a1
D970625.1Bad sounding file CF 970622:0228sgpsondewrpnC1.a1
D970709.1Bad pressure values CF sounding 970704:0525sgpsondewrpnC1.a1
D970710.1Questionable pressure/altitude datasgpsondewrpnC1.a1
D970717.1possible telemetry interference/interpolated datasgpsondewrpnB5.a1
D970717.2Pressure jump at launchsgpsondewrpnB5.a1
D970923.1Pressure jump at launchsgpsondewrpnB5.a1
D970923.2Pressure jump at launchsgpsondewrpnC1.a1
D970930.1Pressure jump at launchsgpsondewrpnB1.a1
D971007.3Bad pressure absolute pressure valuessgpsondewrpnB5.a1
D980126.1Incorrect radiosonde serial numberssgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1,
sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0,
sgpsondewrpnC1.a1
D980126.10Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.11Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.18Telemetry interferencesgpsondewrpnB5.a0, sgpsondewrpnB5.a1
D980126.2Incorrect surface temperature and humiditysgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980126.3Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.4Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.5Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.6Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.7Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.8Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980126.9Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980127.3Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980128.2Incorrect surface temperature and humiditysgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D980506.1Incorrect surface valuessgpsondewrpnC1.a1
D980507.4Incorrect surface pressuresgpsondewrpnC1.a1
D980511.2Incorrect surface pressuresgpsondewrpnC1.a1
D980517.1Pressure jump at launchsgpsondewrpnB1.a1
D980716.1Bad soundingsgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980917.1Incorrect surface readingssgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980917.2Incorrect surface RHsgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990124.2SGP/SONDE - Dry bias in sonde RHDsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0,
DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0,
DsgpsondeC1.a1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1,
DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1,
DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondeptuB1.00, DsgpsondeptuB4.00,
DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, DsgpsondeptucalcB1.c1,
DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, sgpsondeB1.00,
sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1, sgpsondeB5.00,
sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1,
sgpsondeptuC1.00, sgpsondewnpnB1.a0, sgpsondewnpnB1.a1, sgpsondewnpnB4.a0,
sgpsondewnpnB4.a1, sgpsondewnpnB5.a0, sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1,
sgpsondewnpnC1.a0, sgpsondewnpnC1.a1, sgpsondewnprC1.a0, sgpsondewnprC1.a1,
sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0,
sgpsondewrpnB4.a1, sgpsondewrpnB5.00, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1,
sgpsondewrpnB6.00, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0,
sgpsondewrpnC1.a1, sgpsondewrprB1.00, sgpsondewrprB1.a0, sgpsondewrprB1.a1,
sgpsondewrprB4.00, sgpsondewrprB4.a0, sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0,
sgpsondewrprB5.a1, sgpsondewrprC1.00, sgpsondewrprC1.a0, sgpsondewrprC1.a1
D990201.1SGP/SONDE - Incorrect surface pressuresgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D990210.1SGP/SONDE - Wrong cal tapesgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990303.1SGP/SONDE - Pressure jump at launchsgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990304.1SGP/SONDE - Pressure jump at launch/incorrect surface valuessgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
D990329.1Incorrect surface RHsgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990513.1SGP/SONDE - RH probably biased low in several soundingssgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D991221.1SGP/SONDE - Incorrect surface temperaturesgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D991228.1SGP/SONDE - Incorrect surface temperaturesgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1


DQRID : D000219.1
Start DateStart TimeEnd DateEnd Time
02/17/2000233002/17/20002330
Subject:
SGP/SONDE/C1 - Incorrect surface temperature
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
It appears as if the operator mis-typed the temperature when entering the
surface values into the system.  The value appears as 89.0 degC instead of
8.9 degC.  Also note that there are no RH data in this sounding other than
the initial value of 100%.  The reason for this loss of RH is unknown.
Measurements:sgpsondewrpnC1.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)

sgpsondewrpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D000308.1
Start DateStart TimeEnd DateEnd Time
03/03/2000232803/04/20000051
Subject:
SGP/SONDE - Questionable absolute pressures
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The sonde surface pressure reading was considerably higher than the
corresponding THWAPS pressure (988.0 hPa vs 982.3 hPa).  The sonde
readings are consistent during the sounding, however, suggesting that
this is not a case of a pressure jump at launch but one of sensor offset.
This problem will only affect those who use the absolute pressure values.
The file altitudes, which are based on the relative pressure changes
from the surface, should be fine.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • Retrieved pressure profile(pres)


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DQRID : D000308.2
Start DateStart TimeEnd DateEnd Time
03/04/2000022903/04/20000359
Subject:
SGP/SONDE - Questionable absolute pressures
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The sonde surface pressure reading was considerably higher than the
corresponding THWAPS pressure (992.9 hPa vs 983.0 hPa).  The sonde
readings are consistent during the sounding, however, suggesting that
this is not a case of a pressure jump at launch but one of sensor offset.
This problem will only affect those who use the absolute pressure values.
The file altitudes, which are based on the relative pressure changes
from the surface, should be fine.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • Retrieved pressure profile(pres)


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DQRID : D000319.1
Start DateStart TimeEnd DateEnd Time
03/16/2000204203/16/20002143
Subject:
SGP/SONDE - Data missing from sounding
DataStreams:sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
It appears that the collection of the raw data file was interupted by the
SDS.  The following message appears in the raw file
(sonde-hills10003161901.rawraw):

  12  0     4.8    4384    589.3  -11.0  87  -12.7  274  12.8 110001110110

#Collection process shut down by SIGTERM

Another raw file (sonde-hills10003162145.raw) follows with:

~LL?
  73 30     4.7   22154     37.9  -63.4   1  -93.3  250  13.2 110001110110

I don't understand the cause of this problem, but am confident that it
is not instrument related.  These files were merged on ingest.
Measurements:sgpsondewrpnB1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


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DQRID : D000625.1
Start DateStart TimeEnd DateEnd Time
06/23/2000233006/24/20000100
Subject:
SGP/SONDE/C1 - Operator used wrong calibration tape
DataStreams:sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondewndcalcC1.c1, sgpsondewrpnC1.00,
sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
It appears as if the operators had a problem with the original sounding
and launched a second radiosonde.  Apparently they used the calibration
tape that came with the first radiosonde (serial number 943156405) in
place of the one that was correct for the second radiosonde (sn 943156406)
and all the data are bad after the first sample (surface values).
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Surface dew point temperature(dp)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondeC1.a0:
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Mean Wind Speed(wspd)
  • lat(lat)
  • base time(base_time)
  • lon(lon)
  • Retrieved pressure profile(pres)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewndcalcC1.c1:
  • W-to-E Component of wind, calculated(u_wind_calc)
  • lon(lon)
  • lat(lat)
  • Flags for input v_wind values(v_wind_flags)
  • Flags for input u_wind values(u_wind_flags)
  • base time(base_time)
  • S-to-N Component of Wind, calculated(v_wind_calc)
  • Retrieved pressure profile(pres)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondeC1.a1:
  • Dummy altitude for Zeb(alt)
  • Relative humidity inside the instrument enclosure(rh)
  • Ascent Rate(asc)
  • base time(base_time)
  • Mean Wind Speed(wspd)
  • U-component(u_wind)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Retrieved pressure profile(pres)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • V-component(v_wind)

sgpsondeC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • Ascent Rate(asc)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • lat(lat)
  • lon(lon)
  • V-component(v_wind)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Retrieved pressure profile(pres)
  • U-component(u_wind)
  • Dry bulb temperature(tdry)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)


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DQRID : D000801.2
Start DateStart TimeEnd DateEnd Time
07/25/2000053307/25/20000724
Subject:
SGP/SONDE/C1 - Incorrect absolute pressure
DataStreams:sgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The surface pressure (983.5 hPa) reported by this radiosonde (sn 94315713)
is substantially higher than that reported by the THWAPS (~977) or by the
sondes used in the previous and following soundings (976.6, 977.3).  This
may be a calibration problem or a mechanic problem on launch.  The pressure
values reported in the remainder of the sounding are consistent with the
reported surface pressure, so the altitudes should be correct.  The
absolute pressure values may be high by about 5 hPa.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewndcalcC1.c1:
  • Retrieved pressure profile(pres)

sgpsondewrpnC1.a1:
  • Retrieved pressure profile(pres)


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DQRID : D001107.1
Start DateStart TimeEnd DateEnd Time
11/03/2000203011/03/20002030
Subject:
SGP/SONDE/C1 - Incorrect surface temperature
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The value for air temperature at the surface in this file is 23.3 degC.  This value is too 
high and resulted from incorrect data entry (typographic mistake) by the operator.  The 
true value as determined from the operator pre-launch logs is 12.3 degC.
Measurements:sgpsondewrpnC1.a0:
  • Dry bulb temperature(tdry)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • Dry bulb temperature(tdry)


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DQRID : D940804.1
Start DateStart TimeEnd DateEnd Time
07/13/1994113108/03/19941430
Subject:
Possible error in humidity ground check
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  sgpsondewrpnC1

Subject:   Possible error in humidity ground check

Date Submitted:  8/3/94
Submitted By:    Barry Lesht          _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
	What level data: (raw,a0,a1,b1,c1 etc): raw, a0, a1

    What location was the data collected at: CF
 
    Period of time in question
 	Begin Date   7/13/94   Time   11:31    (GMT)
 	End Date     8/ 3/94   Time   14:30    (GMT)

 Data should be labeled:
 _X_  questionable                      ___  All data fields affected
 ___  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

We suspect that the dessicant in the bbss ground check set (located 
only at the central facility) has become saturated and is no longer
providing a 0 %RH environment against which to check the sonde RH sensor.
This would result in a bias in the correction for humidity for 
those soundings that were done during the time the dessicant was bad.  
Examination of the data suggests that the potential errors are small, 
(on the order of a few percent RH), but sufficiently different from previous 
corrections to warrant temporary suspension of the ground check procedure.

A review of the data collected since the beginning of the year shows no
trend in humidity correction until July 13, 1994.  The last positive
humidity correction was recorded on July 12, 1994 and since then has been
noticably (though slightly) downward.

The humidity correction is applied linearly.  That is, U = U' + (Uo - Uo')
where U is the humidity with the ground check applied (this is the RH
value in our data stream), U' is the humidity measured at the sonde before
correction, Uo is the reference humidity (assumed to be 0%), and Uo' is
is the humidity measured by the sonde in the ground check set.  Users
can recover the RH measured at the sonde by subtracing the global attribute
"humidity-correction" from the RH values in the data set.  Based on our
experience with the ground check data, we expect the RH values measured
at the sonde to be accurate within +/-2% RH.  

 
Other observations/measurements impacted by this problem:  

Any measurement derived from the sonde RH measurement, for example
dew point temperature, water vapor mixing ratio).


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data warning user that RH may be biased high by an unknown amount,
probably not exceeding 2% RH.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D941104.1
Start DateStart TimeEnd DateEnd Time
10/30/1994232610/30/19942326
Subject:
Bad surface RH value in sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface RH value in sounding 10/30/94 23:26

Date Submitted: 11/4/94
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  10/30/94   Time   23:26    (GMT)
 	End Date    10/30/94   Time   23:26    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It looks as though an incorrect value was entered by the operator for
surface relative humidity.  The value entered 16% is much lower than the
first value given by the radiosonde 80%.  The rest of the sounding is
consistent with humid, rainy conditions, suggesting a typographical
error (16 instead of 76?).

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D941108.2
Start DateStart TimeEnd DateEnd Time
11/06/1994173311/06/19941733
Subject:
Bad surface RH value in sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface RH value in sounding 11/6/94 17:33

Date Submitted: 11/8/94
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
     Begin Date  11/06/94   Time   17:33    (GMT)
     End Date    11/06/94   Time   17:33    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

An incorrect value was entered by the operator for surface relative humidity.  
The value as entered as 4% should be 45%.  This typographical error was
noted in the site operations log by the operator shortly after it occurred.
The remaining values in the sounding should be fine.

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D941108.4
Start DateStart TimeEnd DateEnd Time
01/21/1993164008/03/19941430
Subject:
CF Sonde Ground Check Corrections
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        CF Sonde Ground Check Corrections

Date Submitted: 11/8/94
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondec1
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  01/21/93   Time   16:40    (GMT)
 	End Date    08/03/94   Time   14:30    (GMT)

 Data should be labeled:
 _?_  questionable                      ___  All data fields affected
 ___  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

Between 1/21/93 and 8/3/94 all radiosondes launched from the central
facility were ground checked before launch.  The ground check procedure
consists of placing the sonde sensor arm into a sealed, dessicated chamber
containing a certified calibrated mercury thermometer, allowing the sonde
to equilibrate, and comparing the sonde output readings for RH and
temperature to the thermometer reading and an assumed 0% RH.  All data after
launch were "corrected" to account for any differences between the sonde
output and the reference conditions in the ground check set.

Analysis of the population of ground check values shows that the average
RH correction was 0% RH and average temperature correction was -0.4 degC.
Because there is some question as to whether applying the ground check
correction increases or decreases the accuracy of the output data, some
investigators may wish to remove the effect of the ground check before
using the data in their analyses.  Ground checks were suspended on 8/3/94.

The algorithms for removing the ground check are:

RH (without ground check) = RH (as reported) - humidity_correction

Temp (without ground chk) = [Temp (as reported) - FACTOR1]/FACTOR2 where

FACTOR1 = [(90*temperature_correction)/(tref+90)
FACOTR2 = [1+(temperature_correction)/(tref+90)

The variables "humidity_correction" and "temperature_correction" are
metadata contained in the netCDF data files from 5/20/93 to 8/3/94.
Between 1/21/93 and 5/20/93 these variables were misnamed and are not
easily accessible via FORTRAN (see PIF 940917.1).

The variable tref is the actual temperature reported by the radiosonde
while in the ground check set.  This variable is not included in the
netCDF file and can be estimated by using a value of 15 degC.  The
correction function is relatively insensitive to variations in this
value.  (see PIF 940917.2)

FORTRAN routines for reading the metadata and for applying the algorithms
to produce "uncorrected" data are available from the instrument mentor.
 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Send (another) notice to users of the data.  

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D941213.1
Start DateStart TimeEnd DateEnd Time
12/09/1994113312/09/19941133
Subject:
Questionable initial values sounding 941209:1133
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondec1

Subject:   Questionable initial values sounding 941209:1133

Date Submitted: 12/12/94
Submitted By:   Barry Lesht           _x_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  All
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  12/09/94   Time   11:33:00 (GMT)
 	End Date    12/09/94   Time   11:33:02 (GMT)

 Data should be labeled:
 _x_  questionable                      ___  All data fields affected
 ___  incorrect                         _x_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that incorrect values were entered for surface temperature and
relative humidity in the subject sounding.  The values entered were
temp = 25.1 degC, rh = 18 %.  The next values in the sounding are
temp =- 2.4 degC, rh = 70 %.  Because these do not appear to be simple
typographical errors, the values should be noted as questionable rather
than incorrect until the paper log can be consulted by site ops.

Initial values for subsequent soundings seem fine.

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Check paper log and flag data.  Note for possible correction later.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950109.1
Start DateStart TimeEnd DateEnd Time
01/02/1995113201/02/19951132
Subject:
Questionable surface value 1/2/95 11:32
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondec1wrpn

Subject:   Questionable surface value 1/2/95 11:32

Date Submitted: 1/9/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  sgpsondec1
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: cf
 
    Period of time in question
 	Begin Date   1/02/95   Time   11:32:00    (GMT)
 	End Date     1/02/95   Time   11:32:02    (GMT)

 Data should be labeled:
 _x_  questionable                      ___  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that incorrect surface values of temperature and relative
humidity were entered for the subject sounding.



 
Other observations/measurements impacted by this problem:

None



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950109.2
Start DateStart TimeEnd DateEnd Time
01/03/1995112901/03/19951129
Subject:
Questionable surface value 1/3/95 11:29
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondec1wrpn

Subject:   Questionable surface value 1/3/95 11:29

Date Submitted: 1/9/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  sgpsondec1
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: cf
 
    Period of time in question
 	Begin Date   1/03/95   Time   11:29:00    (GMT)
 	End Date     1/03/95   Time   11:29:02    (GMT)

 Data should be labeled:
 _x_  questionable                      ___  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that incorrect surface values of temperature and relative
humidity were entered for the subject sounding.



 
Other observations/measurements impacted by this problem:

None



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950304.1
Start DateStart TimeEnd DateEnd Time
02/22/1995053002/22/19950730
Subject:
Reprocess: Sounding 950222:0530 done in research mode
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:

Subject: Sounding 950222:0530 Done in Research Mode

Date Submitted:  3/4/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEC1
	What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/CF
 
    Period of time in question
 	Begin Date   2/22/95   Time   05:30    (GMT)
 	End Date     2/22/95   Time   07:30    (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950310.1
Start DateStart TimeEnd DateEnd Time
03/09/1995053003/09/19950530
Subject:
Bad surface values in sounding 3/9/95:0530
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface values in sounding 3/9/95:0530

Date Submitted:  3/10/95
Submitted By:                         _x_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: sgp/cf
 
    Period of time in question
 	Begin Date   3/09/95   Time   05:30    (GMT)
 	End Date     3/09/95   Time   05:30    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _x_  incorrect                         _x_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:   It appears that the operator entered incorrect
values for the surface temperature and humidity for this sounding.  The
entered values are 24.8 degC (temp) and 19 %RH (humidity) which are most
likely the values obtained from the met instruments inside the trailer
rather from the sonde on the launch platfrom.  The next sample values of
-3.1 degC (temp) and 81 %RH (humidity) appear to be valid.



 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950316.1
Start DateStart TimeEnd DateEnd Time
03/15/1995142903/15/19951629
Subject:
Reprocess: Sounding 950315:1429 done in research mode
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
P950316.1                                                  Barry Lesht
SGP/SONDE.C1.950315.950315 - Sounding 950315:1429 Done in Research Mode

DQR No:                               Platform:

Subject: Sounding 950315:1429 Done in Research Mode

Date Submitted:  3/4/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEC1
 What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/CF

    Period of time in question
  Begin Date   3/15/95   Time   14:29    (GMT)
  End Date     3/15/95   Time   16:29    (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others

 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.


Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950417.1
Start DateStart TimeEnd DateEnd Time
04/13/1995113004/13/19951330
Subject:
Reprocess: Sounding 950413:1130 done in research mode
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:

Subject: Sounding 950413:1130 Done in Research Mode

Date Submitted:  4/17/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEC1
	What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/CF
 
    Period of time in question
 	Begin Date   4/13/95   Time   11:30    (GMT)
 	End Date     4/13/95   Time   13:30    (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950419.1
Start DateStart TimeEnd DateEnd Time
04/17/1995142904/17/19951551
Subject:
Bad surface values in sounding 4/17/95 14:29
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface values in sounding 4/17/95 14:29

Date Submitted: 4/19/95
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  4/17/95   Time   14:29    (GMT)
 	End Date    4/17/95   Time   15:51    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The operator entered incorrect surface values for both RH and pressure.
Because of the way altitude is calculated, the incorrect pressure value
has the effect of making all subsequent altitude values incorrect.  The
RH error only affects the first sample.  

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D950722.1
Start DateStart TimeEnd DateEnd Time
07/17/1995233007/17/19952330
Subject:
Reprocess: Sounding done in research mode
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
DQR No:                               Platform:

Subject: B1 Sounding 950717:2330 Done in Research Mode

Date Submitted:  7/22/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEB1
    What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/B1 (Hillsboro)
 
    Period of time in question
    Begin Date   7/17/95   Time   23:30    (GMT)
    End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D950722.2
Start DateStart TimeEnd DateEnd Time
07/18/1995053007/18/19950530
Subject:
Reprocess: Sounding done in research mode
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
DQR No:                               Platform:

Subject: B1 Sounding 950718:0530 Done in Research Mode

Date Submitted:  7/22/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEB1
    What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/B1 (Hillsboro)
 
    Period of time in question
    Begin Date   7/18/95   Time   05:30    (GMT)
    End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D950723.1
Start DateStart TimeEnd DateEnd Time
07/18/1995233007/18/19952330
Subject:
Reprocess: Sounding done in research mode
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
DQR No:                               Platform:

Subject: B1 Sounding 950718:2330 Done in Research Mode

Date Submitted:  7/23/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEB1
    What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/B1 (Hillsboro)
 
    Period of time in question
    Begin Date   7/18/95   Time   23:30    (GMT)
    End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D950815.4
Start DateStart TimeEnd DateEnd Time
04/20/1994233005/21/19942359
Subject:
SGP/SONDE/B1 - Reprocess: sonde RESEARCH mode altitudes biased low
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
DQR DESCRIPTION:
DQR No:                               Platform: BBSS

Subject: Sonde RESEARCH mode altitudes biased low

Date Submitted: 8/15/95
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
    What level data: (raw,a0,a1,b1,c1 etc): All

    What location was the data collected at: CF, all BFs
 
    Period of time in question
        Begin Date   4/ 7/94   Time     :      (GMT)
        End Date      /  /     Time     :      (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
Discussion of Problem:  I have discovered a problem with the RESEARCH mode
(for PTU) Vaisala processing that results in a negative bias in the calculation
of sonde altitude.  This bias results from neglecting the sensed relative
humidity when calculating air density when integrating the hydrostatic
equation.  In essence, the Vaisala RESEARCH mode (PTU) processing assumes
a dry atmosphere when calculating sonde altitude.  The magnitude of the bias
is cumulative with height and will depend on the vertical distribution of 
moisture, but I have found that it can be as much as 20 meters at the 
tropopause (the RESEARCH-mode sounding altitudes will be smaller than 
altitudes calculated by using sensed RH).  This problem applies to all 
soundings done in "WXPR" mode, where X is either R or N.  In particular, 
all soundings done during the April 1994 (RCS) IOP (4/7/94 to 5/21/94) 
are affected as well as those occasional inadvertent WXPR soundings.
Note that the only variable affected is "alt."

In response to my queries, Vaisala explained that the dry-air calculation was
selected to increase the processing speed in RESEARCH mode.  They consider
the problem to be a minor one.  Vaisala claims that altitudes in NORMAL
(or NOMINAL) processing are calculated by including the sensed RH.  My
simulation experiments have not yet progressed to the point where I can
confirm this independently.  

 
Other observations/measurements impacted by this problem:  Unknown.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Users of the data should be informed of the problem.  I have developed software
that will reproduce the standard output stream with correct altitudes from
the raw binary data and can provide it to interested users.  Boundary facility
soundings can also be reprocessed through the digi-CORA systems if need be.


Data Processing Notes                Date
Measurements:sgpsondewrpnB1.a0:
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Dummy altitude for Zeb(alt)


Back To Table of Contents

DQRID : D950816.5
Start DateStart TimeEnd DateEnd Time
08/11/1995175508/11/19951755
Subject:
bad surface tdry value in sounding 17:55
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface tdry value in sounding 8/11/95 17:55

Date Submitted: 8/16/95
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  8/11/95    Time   17:55    (GMT)
        End Date    8/11/95    Time   17:55    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

An incorrect value was entered by the operator for surface temperature.
The value entered as 28.8 should be 31.8.  This error was noted in the 
site operations log by the operator shortly after it occurred.
The remaining values in the sounding should be fine.

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D951006.1
Start DateStart TimeEnd DateEnd Time
10/03/1995000010/03/19950100
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951002:2330

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
    What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
        Begin Date   10/03/95   Time   XX:XX:XX (GMT)
        End Date     10/03/95   Time   00:54:12 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 14.5 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D951006.2
Start DateStart TimeEnd DateEnd Time
10/03/1995000010/03/19950940
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951003:0830

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/03/95   Time   XX:XX:XX (GMT)
  End Date     10/03/95   Time   09:40:20 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 14.0 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D951006.3
Start DateStart TimeEnd DateEnd Time
10/03/1995000010/03/19951525
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951003:1429

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/03/95   Time   XX:XX:XX (GMT)
  End Date     10/03/95   Time   15:25:24 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 12.7 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D951006.4
Start DateStart TimeEnd DateEnd Time
10/04/1995000010/04/19950707
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951004:0530

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/04/95   Time   XX:XX:XX (GMT)
  End Date     10/04/95   Time   07:07:50 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 12.0 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D951006.5
Start DateStart TimeEnd DateEnd Time
10/04/1995000010/04/19950945
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951004:0834

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/04/95   Time   XX:XX:XX (GMT)
  End Date     10/04/95   Time   09:45:30 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 11.5 km.  At this point the RH signal
 and the pressure and temperature signals are noisy and look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D951006.6
Start DateStart TimeEnd DateEnd Time
10/04/1995000010/04/19951312
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951004:1130

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/04/95   Time   XX:XX:XX (GMT)
  End Date     10/04/95   Time   13:12:02 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 17.0 km.  At this point the RH signal
 drops out and the pressure and temperature signals are noisy and look
 unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960122.1
Start DateStart TimeEnd DateEnd Time
01/17/1996203101/17/19962031
Subject:
Jump in pressure value upon launch
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Jump in pressure value upon launch 960117:2031

Date Submitted: 1/22/96
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondeWRPNC1/ (alt, asc, press)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  1/17/96    Time   20:31    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that the pressure sensor was jarred during launch and jumped
readings from 975.4 hPa at the surface to 950.2 hPa at the first sample
after launch.  This results in erroneous altitude values throughout the
sounding and erroneous ascent rate values during the first 30 seconds.
The relative altitude calculations after the second sample should be
correct.  Although the surface wind speed was recorded at 10.3 m/s,
the next wind value is reported as 18.2 m/s - quite strong.  The bouncing
of the balloon during the launch might account for the abnormal jarring
of the sonde.


 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960122.2
Start DateStart TimeEnd DateEnd Time
01/18/1996053301/18/19960533
Subject:
Jump in pressure value upon launch
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Jump in pressure value upon launch 960118:0533

Date Submitted: 1/22/96
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondeWRPNC1/ (alt, asc, press)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  1/18/96    Time   05:33    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that the pressure sensor was jarred during launch and jumped
readings from 973.1 hPa at the surface to 960.7 hPa at the first sample
after launch.  This results in erroneous altitude values throughout the
sounding and erroneous ascent rate values during the first 30 seconds.
The relative altitude calculations after the second sample should be
correct.  The surface winds were quite strong, 16.5 m/s.  The bouncing
of the balloon during the launch might account for the abnormal jarring
of the sonde.

 
Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960129.1
Start DateStart TimeEnd DateEnd Time
12/13/1995053112/13/19950531
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 12/13/95:0531

Date Submitted:  1/29/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
 	Begin Date  12/13/95   Time   05:31    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 1010 hPa.
The first pressure value reported by the sonde is 971.8 hPa. Pressure at SMOS13
at 05:30 was 973.7 hPa.  The reason for the discrepency between the apparent
surface pressure and that entered by the operator is unknown.

 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960202.2
Start DateStart TimeEnd DateEnd Time
02/01/1996112902/01/19961129
Subject:
bad pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad pressure sounding 02/01/96:1129

Date Submitted:  2/01/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
 What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF

    Period of time in question
  Begin Date  02/01/96   Time   11:29    (GMT)
  End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 962.6.
The first pressure value reported by the sonde is 962.4 hPa. The surface
pressure in the previous (0533) and subsequent (1429) soundings were 983.3
and 985.7 respectively.  SMOS13 pressures were in the 983+ range during
this same period.  It appears that the sonde pressure sensor was bad and
was used as the source of the surface pressure (this is CF standard procedure).
Both the pressure and altitude values for this sounding are likely incorrect.

Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960221.1
Start DateStart TimeEnd DateEnd Time
02/01/1996174502/01/19961746
Subject:
signal interruption
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
DQR No:                               Platform: sgpsondeB1

Subject: Signal Interuption BF1 Sounding 02/01/96:1730

Date Submitted:  2/20/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnB1/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: Morris - CF
 
    Period of time in question
 	Begin Date  02/01/96   Time   17:45:50 (GMT)
 	End Date    02/01/96   Time   17:46:56 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The normal data in this sounding were interupted mid-flight, possibly as
a result of interference from another sonde.  Because this interuption did
not cause 'missing' data but rather incorrect data to be inserted into the
output file, the normal qc flags WERE triggered and users who normally check
the flags should have no trouble.  Other users should be alerted.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date




----- End Included Message -----
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D960223.1
Start DateStart TimeEnd DateEnd Time
02/21/1996113102/21/19961131
Subject:
Incorrect surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Incorrect surface pressure sounding 960221:1131

Date Submitted:  2/22/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF

    Period of time in question
        Begin Date  02/21/96   Time   11:31    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 995.6 hPa.
The first pressure value reported by the sonde is 972.3 hPa.  It appears that
the operator entered sea-level pressure reported by the WeatherMeasureII instead
of sonde surface pressure. The altitude values for this sounding are likely
incorrect.

Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data and remind operators of current procedures.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960223.2
Start DateStart TimeEnd DateEnd Time
02/21/1996143002/21/19961430
Subject:
Incorrect surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Incorrect surface pressure sounding 960221:1430

Date Submitted:  2/22/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF

    Period of time in question
        Begin Date  02/21/96   Time   14:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 995.6 hPa.
The first pressure value reported by the sonde is 969.7 hPa.  It appears that
the operator entered sea-level pressure reported by the WeatherMeasureII instead
of sonde surface pressure. The altitude values for this sounding are likely
incorrect.

Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data and remind operators of current procedures.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960229.1
Start DateStart TimeEnd DateEnd Time
04/14/1995173012/14/19951730
Subject:
SGP/SONDE/B5 - incorrect factory RH calib-radiosondes
DataStreams:sgpsondewrpnB5.a0, sgpsondewrpnB5.a1
Description:
Ongoing investigation of differences between preciptiable water vapor
measured by the microwave radiometer and precipitable water vapor estimated
by integrating the radiosonde-measured profile of water vapor density, along
with isolated periods of anomalous behavior in the AERI/LBLRTM QME results
led to the suggestion that the calibration of some radiosondes may be suspect.
One group of radiosondes, calibrated in November 1994, seemed particularly
irregular.  I met with the manufacturer on February 7 to show them my
results and discuss this issue with them.  The manufacturer agreed that
the data were suggestive of a calibration problem and offered to review
their calibration records for the period in question.

The initial results of the manufacture's investigation were sent to me
on February 27.  The manufacturer found that radiosondes assembled
between 10/26/94 and 11/22/94 were incorrectly calibrated.  The incorrect
calibration affected only the relative humidity measurement; the nature
of the calibration error is non-linear, with the radiosondes meeting
the specified +/- 2% RH accuracy at both 20%RH (+45 degC) and 0%RH (room
temperature).  The error in calibration occurs at high RH and low temperature
(approximate saturation at -30 degC) and can be as large as 10%RH with
the radiosonde reading high.  The direction of this error agrees with
the observation of negative integrated residuals in the AERI ch 1 region
made by Tony Clough and the tendency toward greater than 'normal' differences
in PWV when compared to the MWR when these sondes were used.

The cause of the calibration error was the addition of new, high RH,
quality control check (-30 degC) into the manufacturing stream that
required a change in the calibration software.  The new software mistakenly
loaded an incorrect parameter file that caused the calibration to be
off at high RH - this was not noticed at the time because the radiosondes
passed the regular production QC checks and the failure to agree at the
new QC value was thought to result from a problem with the new reference
standard.  Troubleshooting the entire calibration system in an effort
to incorporate the new QC check was conducted along with normal production,
and took about a month to complete.  The troubleshooting including adjustment
of the calibration software, at which time the correct parameter file
happened to be reloaded, and after which the radiosondes met the desired
specification at the high RH value.

According to the manufacturer, approximately 1900 radiosondes were calibrated
during the period in question.  Sondes from this period were used at all
CART facilities.  At least 1178 soundings involving these sondes were
included in the QME results I looked at (some QME results were discarded
because of problems with either the MWR data or the sounding data).  The
distribution of these 1178 by facility is:

Facility   Number of Sondes          First Used         Last Used
           (based on QME)
   CF            316               1/20/95 (11:30)    9/22/95 (11:30)
   B1            143               2/21/95 (17:30)    9/29/95 ( 8:30)
   B4            313               4/ 6/95 (17:30)   11/ 7/95 (17:28)
   B5            153               4/14/95 (17:30)   12/14/95 (17:30)
   B6            253               3/22/95 (17:30)   10/19/95 (17:30)

The sondes can be recognized by decoding the serial_number metadata word
in the sounding netCDF file.  The serial number of the sondes in question
is a  number (8 or 9 digit) of the form DDMMYTTPP where DD is the day of
the month (leading zero missing in the netCDF data), MM is the month +80
(e.g. 91 for November), Y is the last digit of the year (4 for 1994),
TT is the calibration tray ID, and PP is the position of the sonde in
the calibration tray.  The sondes in question will therefore have serial
numbers coded between 26904TTPP and 22914TTPP.
Measurements:sgpsondewrpnB5.a1:
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB5.a0:
  • Relative humidity inside the instrument enclosure(rh)


Back To Table of Contents

DQRID : D960229.2
Start DateStart TimeEnd DateEnd Time
01/20/1995113009/22/19951130
Subject:
SGP/SONDE/C1 - incorrect factory RH calib-radiosondes
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
Ongoing investigation of differences between preciptiable water vapor
measured by the microwave radiometer and precipitable water vapor estimated
by integrating the radiosonde-measured profile of water vapor density, along
with isolated periods of anomalous behavior in the AERI/LBLRTM QME results
led to the suggestion that the calibration of some radiosondes may be suspect.
One group of radiosondes, calibrated in November 1994, seemed particularly
irregular.  I met with the manufacturer on February 7 to show them my
results and discuss this issue with them.  The manufacturer agreed that
the data were suggestive of a calibration problem and offered to review
their calibration records for the period in question.

The initial results of the manufacture's investigation were sent to me
on February 27.  The manufacturer found that radiosondes assembled
between 10/26/94 and 11/22/94 were incorrectly calibrated.  The incorrect
calibration affected only the relative humidity measurement; the nature
of the calibration error is non-linear, with the radiosondes meeting
the specified +/- 2% RH accuracy at both 20%RH (+45 degC) and 0%RH (room
temperature).  The error in calibration occurs at high RH and low temperature
(approximate saturation at -30 degC) and can be as large as 10%RH with
the radiosonde reading high.  The direction of this error agrees with
the observation of negative integrated residuals in the AERI ch 1 region
made by Tony Clough and the tendency toward greater than 'normal' differences
in PWV when compared to the MWR when these sondes were used.

The cause of the calibration error was the addition of new, high RH,
quality control check (-30 degC) into the manufacturing stream that
required a change in the calibration software.  The new software mistakenly
loaded an incorrect parameter file that caused the calibration to be
off at high RH - this was not noticed at the time because the radiosondes
passed the regular production QC checks and the failure to agree at the
new QC value was thought to result from a problem with the new reference
standard.  Troubleshooting the entire calibration system in an effort
to incorporate the new QC check was conducted along with normal production,
and took about a month to complete.  The troubleshooting including adjustment
of the calibration software, at which time the correct parameter file
happened to be reloaded, and after which the radiosondes met the desired
specification at the high RH value.

According to the manufacturer, approximately 1900 radiosondes were calibrated
during the period in question.  Sondes from this period were used at all
CART facilities.  At least 1178 soundings involving these sondes were
included in the QME results I looked at (some QME results were discarded
because of problems with either the MWR data or the sounding data).  The
distribution of these 1178 by facility is:

Facility   Number of Sondes          First Used         Last Used
           (based on QME)
   CF            316               1/20/95 (11:30)    9/22/95 (11:30)
   B1            143               2/21/95 (17:30)    9/29/95 ( 8:30)
   B4            313               4/ 6/95 (17:30)   11/ 7/95 (17:28)
   B5            153               4/14/95 (17:30)   12/14/95 (17:30)
   B6            253               3/22/95 (17:30)   10/19/95 (17:30)

The sondes can be recognized by decoding the serial_number metadata word
in the sounding netCDF file.  The serial number of the sondes in question
is a  number (8 or 9 digit) of the form DDMMYTTPP where DD is the day of
the month (leading zero missing in the netCDF data), MM is the month +80
(e.g. 91 for November), Y is the last digit of the year (4 for 1994),
TT is the calibration tray ID, and PP is the position of the sonde in
the calibration tray.  The sondes in question will therefore have serial
numbers coded between 26904TTPP and 22914TTPP.
Measurements:sgpsondewrpnC1.a0:
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)


Back To Table of Contents

DQRID : D960229.3
Start DateStart TimeEnd DateEnd Time
02/21/1995173009/29/19950830
Subject:
SGP/SONDE/B1 - incorrect factory RH calib-radiosondes
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
Ongoing investigation of differences between preciptiable water vapor
measured by the microwave radiometer and precipitable water vapor estimated
by integrating the radiosonde-measured profile of water vapor density, along
with isolated periods of anomalous behavior in the AERI/LBLRTM QME results
led to the suggestion that the calibration of some radiosondes may be suspect.
One group of radiosondes, calibrated in November 1994, seemed particularly
irregular.  I met with the manufacturer on February 7 to show them my
results and discuss this issue with them.  The manufacturer agreed that
the data were suggestive of a calibration problem and offered to review
their calibration records for the period in question.

The initial results of the manufacture's investigation were sent to me
on February 27.  The manufacturer found that radiosondes assembled
between 10/26/94 and 11/22/94 were incorrectly calibrated.  The incorrect
calibration affected only the relative humidity measurement; the nature
of the calibration error is non-linear, with the radiosondes meeting
the specified +/- 2% RH accuracy at both 20%RH (+45 degC) and 0%RH (room
temperature).  The error in calibration occurs at high RH and low temperature
(approximate saturation at -30 degC) and can be as large as 10%RH with
the radiosonde reading high.  The direction of this error agrees with
the observation of negative integrated residuals in the AERI ch 1 region
made by Tony Clough and the tendency toward greater than 'normal' differences
in PWV when compared to the MWR when these sondes were used.

The cause of the calibration error was the addition of new, high RH,
quality control check (-30 degC) into the manufacturing stream that
required a change in the calibration software.  The new software mistakenly
loaded an incorrect parameter file that caused the calibration to be
off at high RH - this was not noticed at the time because the radiosondes
passed the regular production QC checks and the failure to agree at the
new QC value was thought to result from a problem with the new reference
standard.  Troubleshooting the entire calibration system in an effort
to incorporate the new QC check was conducted along with normal production,
and took about a month to complete.  The troubleshooting including adjustment
of the calibration software, at which time the correct parameter file
happened to be reloaded, and after which the radiosondes met the desired
specification at the high RH value.

According to the manufacturer, approximately 1900 radiosondes were calibrated
during the period in question.  Sondes from this period were used at all
CART facilities.  At least 1178 soundings involving these sondes were
included in the QME results I looked at (some QME results were discarded
because of problems with either the MWR data or the sounding data).  The
distribution of these 1178 by facility is:

Facility   Number of Sondes          First Used         Last Used
           (based on QME)
   CF            316               1/20/95 (11:30)    9/22/95 (11:30)
   B1            143               2/21/95 (17:30)    9/29/95 ( 8:30)
   B4            313               4/ 6/95 (17:30)   11/ 7/95 (17:28)
   B5            153               4/14/95 (17:30)   12/14/95 (17:30)
   B6            253               3/22/95 (17:30)   10/19/95 (17:30)

The sondes can be recognized by decoding the serial_number metadata word
in the sounding netCDF file.  The serial number of the sondes in question
is a  number (8 or 9 digit) of the form DDMMYTTPP where DD is the day of
the month (leading zero missing in the netCDF data), MM is the month +80
(e.g. 91 for November), Y is the last digit of the year (4 for 1994),
TT is the calibration tray ID, and PP is the position of the sonde in
the calibration tray.  The sondes in question will therefore have serial
numbers coded between 26904TTPP and 22914TTPP.
Measurements:sgpsondewrpnB1.a0:
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB1.a1:
  • Relative humidity inside the instrument enclosure(rh)


Back To Table of Contents

DQRID : D960403.1
Start DateStart TimeEnd DateEnd Time
04/01/1996143004/01/19961430
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 04/01/96 14:30

Date Submitted:  4/2/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
        Begin Date   4/01/96   Time   14:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 1016.1
hPa. The first pressure value reported by the sonde is 988.3 hPa. The surface
pressure at 11:29 was 987.6 and at 17:32 was 988.3.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960415.1
Start DateStart TimeEnd DateEnd Time
04/12/1996053104/12/19960531
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 04/12/96 05:31

Date Submitted:  4/15/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
    Begin Date   4/12/96   Time   05:31    (GMT)
    End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 996.1
hPa. The first pressure value reported by the sonde is 964.2 hPa. The surface
pressure at 11:30 was 972.0 and at 14:30 was 973.5.  It appears that the
operator entered the sea-level pressure rather than the station pressure.
The SMOS pressure during the period is in the 960-970 range.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960506.1
Start DateStart TimeEnd DateEnd Time
05/06/1996052905/06/19960529
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 05/04/96 05:29

Date Submitted:  5/06/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
        Begin Date   5/06/96   Time   05:29    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 993.3
hPa. The first pressure value reported by the sonde is 964.0 hPa. The surface
pressure at 08:30 was 964.7 and at 11:31 was 954.3.  It appears that the
operator entered the sea-level pressure rather than the station pressure.
The SMOS pressure during the period is in the 960-950 range.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960602.2
Start DateStart TimeEnd DateEnd Time
05/29/1996203105/29/19962031
Subject:
bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 05/29/96 20:31

Date Submitted:  6/2/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  05/29/96   Time   20:31    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 999.2
hPa. The first pressure value reported by the sonde is 978.2 hPa. The surface
pressure at 17:25 was 980.1 and at 05:30 (5/30) was 981.8.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960611.3
Start DateStart TimeEnd DateEnd Time
06/10/1996173006/10/19961730
Subject:
bad surface values sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface values sounding 06/10/96 17:30

Date Submitted:  6/11/96
Submitted By:    Barry Lesht          _X_  Instrument Mentor
                 David Glahn          ___  EST Member
                                      ___  Science Team Member
                                      _X_  Other _Site Ops__________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  06/10/96   Time   17:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The site operator inadvertently entered incorrect surface met values for
the subject sounding.  Although he caught the error soon after launch
and reported it immediately, it was too late to correct.  The following
table shows the incorrect (present in the file) and correct values.

                      Incorrect           Correct
Pressure               1000.0              973.9
Temperature              35.0               30.5
Relative Humidity        27                 30

The incorrect values of surface temperature and relative humidity will not
affect the other values in the sounding.  The incorrect surface pressure
will, however, affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960701.4
Start DateStart TimeEnd DateEnd Time
07/01/1996113007/01/19961130
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 06/21/96 11:30

Date Submitted:  7/1/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
       Begin Date  07/01/96   Time   11:30    (GMT)
       End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 996.4
hPa. The first pressure value reported by the sonde is 972.3 hPa. The surface
pressure at 05:30 was 972.3 and at 14:46 was 976.1.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960706.1
Start DateStart TimeEnd DateEnd Time
07/04/1996172807/04/19961728
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 07/04/96 17:28

Date Submitted:  7/6/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
 	Begin Date  07/04/96   Time   17:28    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 995.4
hPa. The first pressure value reported by the sonde is 970.1 hPa. The surface
pressure at 14:30 was 972.3 and at 20:27 was 971.1.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960806.1
Start DateStart TimeEnd DateEnd Time
08/02/1996233008/02/19962330
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnB5.a0, sgpsondewrpnB5.a1
Description:
DQR No:                               Platform: sgpsondeB5

Subject: Bad surface pressure sounding BF5 08/02/96:2330

Date Submitted:  8/5/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnB5/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  BF5 Morris
 
    Period of time in question
 	Begin Date  08/02/96   Time   23:30    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 997.5
hPa. The first pressure value reported by the sonde is 986.9 hPa. The surface
pressure at 20:30 was 988.3 and at 02:30 was 986.4.  It appears that the
operator mistakenly entered the 997.5 rather than 987.5.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date




----- End Included Message -----
Measurements:sgpsondewrpnB5.a1:
  • Wind Direction(deg)
  • lon(lon)
  • Ascent Rate(asc)
  • U-component(u_wind)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Status(wstat)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)

sgpsondewrpnB5.a0:
  • base time(base_time)
  • Wind Status(wstat)
  • Dry bulb temperature(tdry)
  • Dummy altitude for Zeb(alt)
  • lat(lat)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)


Back To Table of Contents

DQRID : D960807.1
Start DateStart TimeEnd DateEnd Time
08/05/1996053008/05/19960530
Subject:
Questionable surface pressure sounding
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
Subject: DQR B1 sounding 960805:0530
Content-Length: 1852

DQR No:                               Platform: sgpsondeB1

Subject: Questionable surface pressure sounding BF1 08/05/96:0530

Date Submitted:  8/5/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnB1/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  BF1 Hillsboro
 
    Period of time in question
 	Begin Date  08/05/96   Time   05:30    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 _X_  questionable                      ___  All data fields affected
 ___  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 967.1
hPa. The first pressure value reported by the sonde is 954.4 hPa. The surface
pressure at 02:30 was 950.3 but at 23:30 (8/4) it was 962.5 (sonde 960.7).
It appears that the either the operator mistakenly entered the 967.1 rather 
than 957.1 and/or that the pressure sensor may have jumped after launch.
In any event, the difference between the surface sample and the first sonde
sample exceeds our criterion for flagging.


Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date




----- End Included Message -----
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D960809.1
Start DateStart TimeEnd DateEnd Time
08/06/1996173008/06/19961730
Subject:
Questionable surface pressure sounding
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
DQR No:                               Platform: sgpsondeB1

Subject: Questionable surface pressure sounding BF1 08/06/96:17:30

Date Submitted:  8/9/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnB1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  BF1 Hillsboro
 
    Period of time in question
        Begin Date  08/06/96   Time   17:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 _X_  questionable                      ___  All data fields affected
 ___  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 967.8
hPa. The first pressure value reported by the sonde is 956.5 hPa. I cannot
tell if the operator entered the surface pressure incorrectly or if the
sonde pressure sensor jumped after launch. In any event, the difference 
between the surface sample and the first sonde sample exceeds our 
criterion for flagging.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D960913.1
Start DateStart TimeEnd DateEnd Time
09/09/1996142909/09/19961429
Subject:
bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding C1 09/09/96:14:29

Date Submitted:  9/9/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  09/09/96   Time   14:29    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 1001.4
hPa. The first pressure value reported by the sonde is 979.7 hPa.  It appears
that the operator incorrectly entered sea-level pressure obtained from the
WeatherMeasure set rather than surface pressure obtained from the radiosonde.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960913.2
Start DateStart TimeEnd DateEnd Time
09/09/1996173109/09/19961731
Subject:
bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding C1 09/09/96:17:31

Date Submitted:  9/9/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
 	Begin Date  09/09/96   Time   17:31    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 1001.5
hPa. The first pressure value reported by the sonde is 978.9 hPa.  It appears
that the operator incorrectly entered sea-level pressure obtained from the
WeatherMeasure set rather than surface pressure obtained from the radiosonde.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date




----- End Included Message -----
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960913.3
Start DateStart TimeEnd DateEnd Time
09/09/1996202909/09/19962029
Subject:
bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding C1 09/09/96:20:29

Date Submitted:  9/9/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  09/09/96   Time   20:29    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 999.4
hPa. The first pressure value reported by the sonde is 975.4 hPa.  It appears
that the operator incorrectly entered sea-level pressure obtained from the
WeatherMeasure set rather than surface pressure obtained from the radiosonde.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960913.5
Start DateStart TimeEnd DateEnd Time
09/12/1996083009/12/19960830
Subject:
bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding C1 09/12/96:0830

Date Submitted:  9/13/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  012/96   Time 08:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 987.7
hPa. The first pressure value reported by the sonde is 976.1 hPa.  The
operator transposed the correct surface pressure 978.7 when entering the
data.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D960927.2
Start DateStart TimeEnd DateEnd Time
09/27/1996082809/27/19960828
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding C1 09/26/96:0828

Date Submitted:  9/27/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  09/27/96   Time 08:28      (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 976.1
hPa.  Analysis of the raw data file suggests that the actual surface pressure
at time of launch was 967.1 hPa.  It appears that the operator transposed 
the correct surface pressure from 967.1 to 976.1 when entering the data.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970111.1
Start DateStart TimeEnd DateEnd Time
01/10/1997173001/10/19971730
Subject:
Incorrect surface temperature
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Incorrect surface temperature: sounding C1 01/10/97:1730

Date Submitted:  1/11/97
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      _X_  Other - Site Ops
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  01/10/97   Time 17:30      (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The site operator noted that the surface temperature for the subject sounding
was entered incorrectly.  The value entered was -3.3 degC; the correct value
should be -6.3 degC.  This is a fairly benign error, only the surface values
will be affected.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970318.1
Start DateStart TimeEnd DateEnd Time
03/17/1997173003/17/19971730
Subject:
Incorrect surface pressure
DataStreams:sgpsondewrpnB5.a1
Description:
DQR No:                               Platform: sgpsondeB5

Subject: Incorrect surface pressure: sounding B5 03/17/97:1730

Date Submitted:  3/18/97
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other - Site Ops
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnB5.A1/all 
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  B5
 
    Period of time in question
        Begin Date  03/17/97   Time 17:30      (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ____  questionable                      ___  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that the site operator made a keyboard mistake when entering the
surface pressure for the subject sounding.  The pressure was entered as 999.6
and the first pressure value reported by the radiosonde was 989.3 hPa.  The
operators meteorological observaation log shows a sea-level pressure of 992.3
hPa at 1700.

The incorrect pressure value will affect the altitude values reported during
the sounding and the ascent rate values during the first 30 seconds of the
sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


Back To Table of Contents

DQRID : D970318.2
Start DateStart TimeEnd DateEnd Time
03/07/1997142703/07/19971427
Subject:
Questionable RH
DataStreams:sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Questionable RH: sounding C1 03/07/97:1427

Date Submitted:  3/18/97
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other - Site Ops
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1.A1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  03/07/97   Time 14:27      (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 _X__  questionable                      _?_  All data fields affected
 _X__  incorrect                         _X_  Only some data fields affected
 _?_  wrong calibration
 ___  others 
 
 Discussion of Problem:

David Cook pointed out that the RH values for the subject sounding disagree
substantially with values reported at the 60m tower.  Review of the sounding
data shows saturation (100%) values reported at the surface and during
most of the sounding.  The site ops log shows RH values of between 68% (1400) 
and 52% (1500) at the surface.  Surface temperature (8.4) and pressure (983.0)
obtained from the sonde are not substantially different from the surface
observations (7.8/10.8) and (982.7/982.4) at 1400 and 1500 respectively, so
it is unlikely that an incorrect calibration tape was used for the sonde.
I think the conclusion must be that the RH sensor on this sonde was bad.

As an operational issue, this sonde should have been rejected by site ops
because the surface RH value of 100% is more than 7% different than the surface
value obtained from an independent reference instrument.  I will check the 
procedures that I have provided to site ops to be sure that I included this
criterion.  
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970410.5
Start DateStart TimeEnd DateEnd Time
04/05/1997203004/05/19972030
Subject:
Reprocess: Jump in pressure value
DataStreams:sgpsondewrpnB5.a1
Description:
DQR No:                               Platform:  sgpsondeB5

Subject:        Jump in pressure value B5 sounding 970405.2030

Date Submitted: 4/10/97
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnb5/ (alt, asc, press)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/BF5
 
    Period of time in question
        Begin Date  4/5/97     Time   20:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The first pressure value reported by the radiosonde (t = 2 sec) is
967.3.  The surface pressure value was 973.5 hPa.  This difference
is slightly greater than the expected (normal) change and may mean that
either the pressure sensor was jarred during launch or the system 
mis-identified the actual launch start time.  Further clarification requires 
analysis of the raw data which will take some time.  The altitude values 
for this sounding will be incorrect.  The ascent rate values during the 
first 30 seconds also will be wrong.  Because the system will reject 
samples with out of bound ascent rates (i.e., during the first 30 seconds), 
the temperature and rh values also will be incorrect (result of 
interpolation).  Relative height values after 30 seconds should be okay.

 
Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


Back To Table of Contents

DQRID : D970507.2
Start DateStart TimeEnd DateEnd Time
05/05/1997173205/05/19971732
Subject:
Jump in pressure value
DataStreams:sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  sgpsondeC1

Subject:        Jump in pressure value C1 sounding 970505.1732

Date Submitted: 5/06/97
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnc1/ (alt, asc, press)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  5/05/97    Time   17:32    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The first pressure value reported by the radiosonde (t = 2 sec) is
974.9.  The surface pressure value was 980.9 hPa.  This difference
is somewhat greater than the expected (normal) change and may mean that
either the pressure sensor was jarred during launch or the system 
mis-identified the actual launch start time.  Further clarification requires 
analysis of the raw data which will take some time.  The altitude values 
for this sounding will be incorrect.  The ascent rate values during the 
first 30 seconds also will be wrong.  Because the system will reject 
samples with out of bound ascent rates (i.e., during the first 30 seconds), 
the temperature and rh values also will be incorrect (result of 
interpolation).  Relative height values after 30 seconds should be okay.

 
Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970507.3
Start DateStart TimeEnd DateEnd Time
05/06/1997181405/06/19971815
Subject:
Corrupted and missing data
DataStreams:sgpsondewrpnB5.a1
Description:
DQR No:                               Platform:  sgpsondeB5

Subject:        Corrupted and missing data B5 sounding 970506.1731

Date Submitted: 5/07/97
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnb5/ (all)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/BF5
 
    Period of time in question
        Begin Date  5/06/97    Time  18:14:30     (GMT)
        End Date    5/06/97    Time  18:15:12     (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

An apparent communication problem between the digi-CORA and the SDS led
to inclusion of one corrupt data scan (at 43 minutes, 30 seconds into
the sounding) and no data between valid scans at 43 min, 28 sec and
44 min, 16 sec.  The corrupt data was interpreted by the ingest as
valid data and it is included in the netCDF file.  Note, however, that
the QC flags for this scan are set correctly, indicating that the data
in the netCDF file violated the mentor QC criteria.
 
Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Reprocess sounding at BF5 pending decision of PRB.
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


Back To Table of Contents

DQRID : D970624.2
Start DateStart TimeEnd DateEnd Time
06/21/1997202706/21/19972027
Subject:
Incorrect surface values
DataStreams:sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  sgpsondeC1

Subject:        Incorrect surface values sounding 970621:2027

Date Submitted: 6/23/97
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnc1
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  6/21/97    Time   20:27    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

Site operations reports that incorrect surface values were entered into
the subject sounding.  Instead of 972.3, 33.7, and 46 the surface pressure,
temperature, and humidity values should have been 971.8, 33.3, and 47.

The incorrect surface pressure will result in incorrect altitudes throughout
the profile and incorrect ascent rate values during the first 30 seconds.
The effects of the incorrect temperature and relative humidty values should
be negligable.
 
Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970625.1
Start DateStart TimeEnd DateEnd Time
06/22/1997022806/22/19970236
Subject:
Bad sounding file CF 970622:0228
DataStreams:sgpsondewrpnC1.a1
Description:
It appears that there was a problem with the radiosonde that generated
this short file. The pressure values are unreasonably high and the
file terminated after only 484 seconds of flight.  I note that the
operators started a new sounding at 0252.  This entire file should be
disregarded or deleted.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970709.1
Start DateStart TimeEnd DateEnd Time
07/04/1997052507/04/19970630
Subject:
Bad pressure values CF sounding 970704:0525
DataStreams:sgpsondewrpnC1.a1
Description:
The pressure values and hence altitude values are most likely incorrect
in this sounding.  It also appears that an incorrect surface pressure
value was entered by the operator.  The surface pressure value in
the data (986.8) is somewhat higher than the surface pressures for the
neighboring soundings and higher than recorded in the raw data collected
before launch (~978 hPa).  The first pressure value recorded by the
sonde after launch is 884.8 hPa.  Analysis of the absolutely raw data
reveals that the sonde was reading about 978 hPa well before launch,
then suddenly dropped to 886.8 at which it remained stable for several
minutes, then began slowly decreasing as would be expected after launch.
My best guess is that the sonde was somehow damaged during handling
before launch resulting in erroneous pressure values.  Relative pressure
changes from an 'apparent' surface value of 886.8 hPa may be correct,
but the absolute pressure values are not.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D970710.1
Start DateStart TimeEnd DateEnd Time
04/29/1996052704/29/19960527
Subject:
Questionable pressure/altitude data
DataStreams:sgpsondewrpnC1.a1
Description:
Ric Cederwall noticed that the lowest 85 samples of this sounding have
nearly constant values of temperature and relative humidity.  It appears
that the system may have mis-identified the launch start time in a way
that resulted in the system using interpolated values of pressure even
though the sonde was still on the ground.  This may have been caused by
a damaged pressure sensor.  I will examine the absolutely raw data to
try and understand this further, but I think it is reasonable to assume
that the first 85 samples or so are incorrect and representative of
condidtions at the surface and that the pressure sensor was damaged
during this sounding.  I will request the raw data from the archive
today.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


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DQRID : D970717.1
Start DateStart TimeEnd DateEnd Time
07/15/1997183607/15/19971851
Subject:
possible telemetry interference/interpolated data
DataStreams:sgpsondewrpnB5.a1
Description:
It appears that this sonde lost signal briefly a little after an hour
into the flight at 18:36:42 (altitude approx 17 km.  Signal was recovered,
but it is possible that the signal was from a different sonde - temp and
RH data appear to be interpolated in the interval from 17 to 20 km.  I
would treat all data above 17 km (after 18:36:42) as questionable.
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


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DQRID : D970717.2
Start DateStart TimeEnd DateEnd Time
07/15/1997203007/15/19972030
Subject:
Pressure jump at launch
DataStreams:sgpsondewrpnB5.a1
Description:
The first pressure value returned by the radiosonde after launch (985.2)
is somewhat lower than would be expected based on the entered surface
pressure (990.0).  It is likely that either the pressure sensor was
jarred at launch or that the system mis-identified the launch time.
Altitude and absolute pressure values will be affected and ascent rate
values during the first 30 sec of flight will be incorrect.
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


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DQRID : D970923.1
Start DateStart TimeEnd DateEnd Time
09/21/1997143009/21/19971430
Subject:
Pressure jump at launch
DataStreams:sgpsondewrpnB5.a1
Description:
The difference between the first pressure value reported by the sonde
after launch (992.7) and the surface value entered by the operator (997.5)
is somewhat greater than would normally be expected.  This may indicate
jarring of the pressure sensor at launch or misidentification of the
start time by the system.  The altitude values in the file will be incorrect
as well be the ascent rate values during the first 30 seconds of the
sounding.
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


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DQRID : D970923.2
Start DateStart TimeEnd DateEnd Time
09/21/1997053009/21/19970530
Subject:
Pressure jump at launch
DataStreams:sgpsondewrpnC1.a1
Description:
The difference between the first pressure value recorded by the radiosonde
after launch (984.5) that the surface value entered by the operator (989.3)
is somewhat larger than would normally be expected.  This will result in
incorrect altitude values throughout the sounding.  The ascent rates
during the first 30 seconds also will be incorrect.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


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DQRID : D970930.1
Start DateStart TimeEnd DateEnd Time
09/27/1997053009/27/19970530
Subject:
Pressure jump at launch
DataStreams:sgpsondewrpnB1.a1
Description:
The difference between first pressure value reported by the radiosonde 
after launch (954.4) and the surface value entered by the operator (961.7)
is greater than expected , indicating that either ths sonde was jarred on 
launch or that the system mis-identified start time.
Measurements:sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • U-component(u_wind)
  • lat(lat)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Dry bulb temperature(tdry)
  • base time(base_time)


Back To Table of Contents

DQRID : D971007.3
Start DateStart TimeEnd DateEnd Time
10/03/1997203010/03/19972030
Subject:
Bad pressure absolute pressure values
DataStreams:sgpsondewrpnB5.a1
Description:
The BF operator noted that the sonde pressure was reading about 20 hPa low
relative to ambient.  Based on interpolation from the previous and subsequent
soundings, the surface pressure was probably something like 978 hPa.  The
sonde pressure sensor was reading 955.8.  It is possible that the operator
used the wrong calibration tape, but it is more likely that their was
a problem with the pressure sensor (based on the reasonable values of
surface temperature and rh).
Measurements:sgpsondewrpnB5.a1:
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lon(lon)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)


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DQRID : D980126.1
Start DateStart TimeEnd DateEnd Time
01/01/1998000012/31/19992359
Subject:
Incorrect radiosonde serial numbers
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1,
sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0,
sgpsondewrpnC1.a1
Description:
Radiosondes manufactured at Vaisala's Woburn, MA factory during the first
of January 1998 have incorrect serial numbers.  Instead of being numbered
8012XXXXX these sondes are numbered 7012XXXXX.  Vaisala has been informed
of this, has confirmed the problem, and has corrected their numbering for
all subsequent sondes.  163 incorrectly numbered sondes were shipped to ARM
on 1/9/98.  Some have been used at the CF since 1/19/98:1430.
Measurements:sgpsondewrpnC1.a0:
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • lon(lon)
  • Surface dew point temperature(dp)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • base time(base_time)

sgpsondewrpnB5.a1:
  • Ascent Rate(asc)
  • Dry bulb temperature(tdry)
  • Retrieved pressure profile(pres)
  • base time(base_time)
  • Wind Direction(deg)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • lat(lat)
  • V-component(v_wind)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • U-component(u_wind)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB4.a0:
  • Time offset of tweaks from base_time(time_offset)
  • Dry bulb temperature(tdry)
  • Retrieved pressure profile(pres)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • lon(lon)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • lat(lat)

sgpsondewrpnB1.a0:
  • Wind Direction(deg)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Retrieved pressure profile(pres)
  • Wind Status(wstat)
  • base time(base_time)
  • Time offset of tweaks from base_time(time_offset)
  • Surface dew point temperature(dp)
  • lon(lon)

sgpsondewrpnB6.a0:
  • lat(lat)
  • base time(base_time)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • Ascent Rate(asc)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)

sgpsondewrpnB5.a0:
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Dummy altitude for Zeb(alt)
  • Ascent Rate(asc)
  • Surface dew point temperature(dp)
  • Wind Status(wstat)
  • lat(lat)
  • Relative humidity inside the instrument enclosure(rh)
  • lon(lon)
  • Retrieved pressure profile(pres)
  • Mean Wind Speed(wspd)

sgpsondewrpnB4.a1:
  • Wind Status(wstat)
  • Time offset of tweaks from base_time(time_offset)
  • V-component(v_wind)
  • Surface dew point temperature(dp)
  • lat(lat)
  • Wind Direction(deg)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • Ascent Rate(asc)
  • lon(lon)
  • U-component(u_wind)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)

sgpsondewrpnB6.a1:
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • lon(lon)
  • Dummy altitude for Zeb(alt)
  • Retrieved pressure profile(pres)
  • Wind Status(wstat)
  • base time(base_time)
  • V-component(v_wind)
  • Time offset of tweaks from base_time(time_offset)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • lat(lat)

sgpsondewrpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • lon(lon)
  • U-component(u_wind)
  • Dry bulb temperature(tdry)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • V-component(v_wind)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Retrieved pressure profile(pres)
  • Mean Wind Speed(wspd)

sgpsondewrpnB1.a1:
  • Wind Direction(deg)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • U-component(u_wind)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Retrieved pressure profile(pres)
  • lon(lon)
  • lat(lat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.10
Start DateStart TimeEnd DateEnd Time
01/23/1998083001/23/19980830
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered inside temperature (24.1 degC) and RH (15) instead
of outside (approx -5.6 degC, 89RH).  This will affect the first few
points of the sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.11
Start DateStart TimeEnd DateEnd Time
01/23/1998113001/23/19981130
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered inside temperature (24.4 degC) and relative humidity
(15) instead of outside (approx -4.0 degC, 82).  This will affect the
first few points of the sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.18
Start DateStart TimeEnd DateEnd Time
01/20/1998180801/20/19981814
Subject:
Telemetry interference
DataStreams:sgpsondewrpnB5.a0, sgpsondewrpnB5.a1
Description:
The ground station began tracking a different radiosonde at 18:08:26.
Pressure and temperature data were recorded from this point to the end
of the sounding at 18:12:52 but are incorrect.  No wind or RH data were
recorded after 18:08:26.  The sounding up to this point is okay.
Measurements:sgpsondewrpnB5.a1:
  • Wind Direction(deg)
  • lon(lon)
  • Ascent Rate(asc)
  • U-component(u_wind)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • Wind Status(wstat)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)

sgpsondewrpnB5.a0:
  • base time(base_time)
  • Wind Status(wstat)
  • Dry bulb temperature(tdry)
  • Dummy altitude for Zeb(alt)
  • lat(lat)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)


Back To Table of Contents

DQRID : D980126.2
Start DateStart TimeEnd DateEnd Time
01/19/1998113001/19/19981130
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
Incorrect values of surface temperature and relative humidity were entered
by the operator.  The surface temperature was entered as 17.5 degC; the
first value reported by the sonde was -3.6 degC.  The surface humidity
was entered as 26; the first value reported by the sonde was 81%. It
appears that the operator used the inside temperature/humidity rather
than the sonde-reported outside temperature/humidity.

Only the first few samples of the sounding will be affected.  Note that
the delta-check QC flag is set by this error.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D980126.3
Start DateStart TimeEnd DateEnd Time
01/20/1998022901/20/19980229
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
Incorrect values of surface temperature and relative humidity were
entered by the operator.  These were entered as 25.3 degC and 20% and
should probably have been closer to -0.5 degC and 73%. It appears
that the operator used the inside readings rather than the outside
readings.  This seems to be a recurring problem (similar DQRs follow)
and site ops has been informed so procedures can be reviewed.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.4
Start DateStart TimeEnd DateEnd Time
01/20/1998053001/20/19980530
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
Incorrect values of surface temperature and relative humidity were 
entered by the operator.  These were entered as 22.1 degC and 20, but
should probably be closer to -1.1 degC and 79%. It appears that the
operator used the inside rather than the outside temperature.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.5
Start DateStart TimeEnd DateEnd Time
01/20/1998233001/20/19982330
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered incorrect values of surface temperature and relative
humidity.  The values entered are 18.8 degC and 30rather should be
closer to 10.0 degC and 55It appears that the operator entered the
inside rather than the outside values.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.6
Start DateStart TimeEnd DateEnd Time
01/21/1998023001/21/19980230
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered values of temperature and relative humidity obtained
inside (21.3 degC, 23) rather than outside (closer to -0.4 degC, 79).
These incorrect values will affect only the first few points of the
sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.7
Start DateStart TimeEnd DateEnd Time
01/21/1998053001/21/19980530
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered temperature and relative humidity values obtained from
inside (21.8 degC, 20) rather than outside (closer to -1.8 degC, 78).
The incorrect values will only affect the first few points in the
sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.8
Start DateStart TimeEnd DateEnd Time
01/22/1998083001/22/19980830
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator apparently entered inside temperature and relative humidity
(24.4, 21) rather than outside values (closer to -6.0, 81).  The
incorrect values will affect only the first few points of the sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980126.9
Start DateStart TimeEnd DateEnd Time
01/22/1998113001/22/19981130
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered surface temperature and relative humidity (21.0, 18)
obtained from inside rather than from outside (closer to -6.5, 75).  This
will affect the first few points of the sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980127.3
Start DateStart TimeEnd DateEnd Time
01/25/1998143001/25/19981430
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
It appears that the operator incorrectly entered inside temperature
(21.1 degC) and RH (23) instead of outside values obtained from the
radiosonde (closer to 0.8 degC and 78) as surface values for this
sounding.  The first few levels of data will be affected.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980128.2
Start DateStart TimeEnd DateEnd Time
01/26/1998143001/26/19981430
Subject:
Incorrect surface temperature and humidity
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
It appears that the operators entered the inside temperature (18.6 degC)
and RH (29) rather than the outside values (approx 0.9 degC, 73) when
prompted for the surface met data.  These incorrect values will affect
the first few points of the sounding.
Measurements:sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D980506.1
Start DateStart TimeEnd DateEnd Time
04/29/1998143104/29/19981431
Subject:
Incorrect surface values
DataStreams:sgpsondewrpnC1.a1
Description:
The surface pressure, temperature, and relative humidity are incorrect for
this soundings.  The values in the sounding netCDF file (975.6, 3.2, 86)
are different from the surface observations in the site ops log (978.9,
9.1, and 83) and from the values in the raw radiosonde data file at
the moment just before ascent (978.7, 9.5, 83).  The reason for the
differences are unknown, but insofar as the surface values are manually
entered by the operator into both the log (where they are correct) and
into the sounding file (where they are incorrect) an operator
miscue is a possibility.

The major effect of this problem will be incorrect absolute altitude.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D980507.4
Start DateStart TimeEnd DateEnd Time
05/06/1998083205/06/19980832
Subject:
Incorrect surface pressure
DataStreams:sgpsondewrpnC1.a1
Description:
The operator transposed the digits of the surface pressure entering 976.3
instead of 967.3.  The ops log shows 967.3 for the sonde and 968.3 for
the THWAPS.  Analysis of the absolutely raw sonde data shows 968.0 at
the system-identified launch time.

Note that because the output pressure data are smoothed, under the
assumption that the surface data value is true, the first value
reported by the sonde after launch 970.4 also is incorrect.  The raw
value corresponding to the sample after launch is 966.6.

The absolute pressure values will be incorrect for the first few samples
of the sounding, as will be the ascent rates for the first 30 seconds.
The absolute altitude values also will be in error.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D980511.2
Start DateStart TimeEnd DateEnd Time
05/09/1998143105/09/19981431
Subject:
Incorrect surface pressure
DataStreams:sgpsondewrpnC1.a1
Description:
The operator entered 960.2 for the surface pressure in both the log and
the system.  The first reading from the sonde is 950.9.  Examination of
the absolutely raw data shows that the sonde pressure before launch was
952.3.  The THWAPS reading was 964.2.  From the raw data it appears that
either the system was not reset before this sounding or that a second
sonde was started without resetting the system.  The sonde pressure
may be low in absolute terms or the operator may have mis-entered the
actual sonde reading.  In either case the absolute altitude will be wrong
in this sounding and the ascent rates will be incorrect for the first
30 seconds.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • lon(lon)
  • Relative humidity inside the instrument enclosure(rh)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D980517.1
Start DateStart TimeEnd DateEnd Time
05/13/1998233005/13/19982330
Subject:
Pressure jump at launch
DataStreams:sgpsondewrpnB1.a1
Description:
The difference between the first pressure reported by the sonde after
launch (945.1) is substantially lower than that reported at the surface
(955.7).  This difference is greater than expected and suggests that either
the sonde was jarred at launch or the system misidentified the actual
start time.  The effect is that the absolute altitudes will be incorrect
for this sounding as will be the ascent rates during the first 30
seconds.
Measurements:sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • U-component(u_wind)
  • lat(lat)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Dry bulb temperature(tdry)
  • base time(base_time)


Back To Table of Contents

DQRID : D980716.1
Start DateStart TimeEnd DateEnd Time
07/14/1998234607/14/19982346
Subject:
Bad sounding
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
Data from this sounding look very fragmented as if only a few actual points
were collected and intermediate points were intepolated.  In a general
sense this sounding looks 'weird' and should not be trusted.  I do not yet
have access to r1 so I can't look at the raw data, but I doubt that it will
shed much light on the situation.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D980917.1
Start DateStart TimeEnd DateEnd Time
05/09/1998202905/09/19982029
Subject:
Incorrect surface readings
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
It appears that the operator entered an incorrect set of surface data for
the subject sounding.  The sounding has surface PTU as 975.6 hPa, 20.0 degC,
and 93% RH - the corresponding THWAPS readings are 969.7 hPa, 19.9 degC, and
72.1 %RH.  The OMIS log for the subject souding shows sonde surface values
of 969.2 hPa, 17.6 degC, and 70% RH.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D980917.2
Start DateStart TimeEnd DateEnd Time
05/07/1998232905/07/19982329
Subject:
Incorrect surface RH
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
Because of what appears to be a typographical error, the operator entered
5% RH when the surface RH was 54% RH.  The corresponding THWAPS reading
is 50.1% RH and the OMIS log shows 54%RH.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D990124.2
Start DateStart TimeEnd DateEnd Time
05/27/1992000005/31/20022359
Subject:
SGP/SONDE - Dry bias in sonde RH
DataStreams:DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0,
DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0,
DsgpsondeC1.a1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1,
DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1,
DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondeptuB1.00, DsgpsondeptuB4.00,
DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, DsgpsondeptucalcB1.c1,
DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, sgpsondeB1.00,
sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1, sgpsondeB5.00,
sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1,
sgpsondeptuC1.00, sgpsondewnpnB1.a0, sgpsondewnpnB1.a1, sgpsondewnpnB4.a0,
sgpsondewnpnB4.a1, sgpsondewnpnB5.a0, sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1,
sgpsondewnpnC1.a0, sgpsondewnpnC1.a1, sgpsondewnprC1.a0, sgpsondewnprC1.a1,
sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0,
sgpsondewrpnB4.a1, sgpsondewrpnB5.00, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1,
sgpsondewrpnB6.00, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0,
sgpsondewrpnC1.a1, sgpsondewrprB1.00, sgpsondewrprB1.a0, sgpsondewrprB1.a1,
sgpsondewrprB4.00, sgpsondewrprB4.a0, sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0,
sgpsondewrprB5.a1, sgpsondewrprC1.00, sgpsondewrprC1.a0, sgpsondewrprC1.a1
Description:
Vaisala has confirmed ARM findings of an apparent dry bias in the
relative humidity measured by RS-80H radiosondes.  The cause of
the dry bias is thought to be contamination of the humidity sensor
by volatile organic substances originating from some plastic parts
of the radiosonde.  The amount of contamination is a function of
the time between the date of sonde manufacture and its use.  All
RS-80H sondes manufactured before week 34 of 1998 will show this
bias.  After week 34 of 1998 Vaisala changed its packaging to
reduce, but not eliminate the contamination problem.

Starting with RS-80 radiosonde manufactured in late June 2000 Vaisala
enclosed the sensor boom in an inert plastic shield, thereby eliminating
the contamination that caused the dry bias.

Starting in May 2001 at the SGP, May 2002 at the TWP, and later 2002
at the NSA, ARM has moved to using RS-90 radiosondes.  These sondes
are not subject to the contaminatino that caused the dry bias.

Vaisala is in the process of developing an algorithm that can be 
used to estimate the correct RH from knowledge of the sonde age.
All of the ARM sounding data have sufficient metadata available
to apply the correction.

Additionally, ARM has funded a Science Team effort (Milosevich) to
develop a 'best' correction algorithm for the RS-80 radiosonde humidity
data.  When completed this algorithm will allow us to reprocess the
accumulated RS-80 data and produce a new data platform with what we
hope will be more accurate data.
Measurements:sgpsondeB4.00:
  • null(Raw data stream - documentation not supported)

DsgpsondeB5.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewnpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

DsgpsondeptuB6.00:
  • (Development raw data stream - documentation not supported)

DsgpsondenogcptucalcB1.c1:
  • (Development data stream - documentation not supported)

sgpsondewrpnB6.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

DsgpsondeptuC1.00:
  • (Development raw data stream - documentation not supported)

sgpsondewnprC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

DsgpsondenogcptucalcB5.c1:
  • (Development data stream - documentation not supported)

DsgpsondeptucalcC1.c1:
  • (Development data stream - documentation not supported)

sgpsondewnpnB4.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondeB6.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrprB4.00:
  • null(Raw data stream - documentation not supported)

DsgpsondeptuB1.00:
  • (Development raw data stream - documentation not supported)

DsgpsondenogcptucalcC1.c1:
  • (Development data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrprC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnB1.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrprB5.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondeB5.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrprB5.00:
  • null(Raw data stream - documentation not supported)

DsgpsondeC1.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrprB1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondeB1.00:
  • null(Raw data stream - documentation not supported)

sgpsondeptuC1.00:
  • null(Raw data stream - documentation not supported)

DsgpsondenogcptucalcB4.c1:
  • (Development data stream - documentation not supported)

DsgpsondeB1.a0:
  • (Development data stream - documentation not supported)

DsgpsondeC1.a1:
  • (Development data stream - documentation not supported)

DsgpsondeptucalcB5.c1:
  • (Development data stream - documentation not supported)

sgpsondewrprB1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB1.00:
  • null(Raw data stream - documentation not supported)

sgpsondeB1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

DsgpsondeC1.a0:
  • (Development data stream - documentation not supported)

DsgpsondeB4.a1:
  • (Development data stream - documentation not supported)

DsgpsondeptuB4.00:
  • (Development raw data stream - documentation not supported)

sgpsondeB1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrprB5.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondeC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewnpnB1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB6.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrprC1.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondeC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrprC1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

DsgpsondeptuB5.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrpnB5.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrprB4.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

DsgpsondeB1.a1:
  • (Development data stream - documentation not supported)

sgpsondeB5.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewnpnB6.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

DsgpsondeB5.a1:
  • (Development data stream - documentation not supported)

DsgpsondenogcwrpnB1.c1:
  • (Development data stream - documentation not supported)

sgpsondewrprB1.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB5.00:
  • null(Raw data stream - documentation not supported)

DsgpsondeB4.a0:
  • (Development data stream - documentation not supported)

DsgpsondenogcwrpnB4.c1:
  • (Development data stream - documentation not supported)

DsgpsondeB5.a0:
  • (Development data stream - documentation not supported)

sgpsondewnpnB4.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnprC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB5.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewnpnB5.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

DsgpsondeB4.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrpnB6.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrprB4.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewnpnB1.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondeB4.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondeC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB4.00:
  • null(Raw data stream - documentation not supported)

DsgpsondenogcwrpnB5.c1:
  • (Development data stream - documentation not supported)

sgpsondewnpnC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB4.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

DsgpsondeB1.00:
  • (Development raw data stream - documentation not supported)

sgpsondeB4.a0:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnB6.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewrpnB4.a1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

sgpsondewnpnB5.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

DsgpsondeptucalcB4.c1:
  • (Development data stream - documentation not supported)

DsgpsondenogcwrpnC1.c1:
  • (Development data stream - documentation not supported)

sgpsondeB5.00:
  • null(Raw data stream - documentation not supported)

DsgpsondeptucalcB1.c1:
  • (Development data stream - documentation not supported)


Back To Table of Contents

DQRID : D990201.1
Start DateStart TimeEnd DateEnd Time
01/31/1999082901/31/19990829
Subject:
SGP/SONDE - Incorrect surface pressure
DataStreams:sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
The operator entered the THWAPS surface pressure (965.6) rather
than the sonde surface pressure (963.8) into the sounding file.
This will result in inaccurate ascent rates during the first
30 seconds of the sounding and inaccurate absolute altitudes
throughout.
Measurements:sgpsondewrpnB1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D990210.1
Start DateStart TimeEnd DateEnd Time
02/09/1999083402/09/19991016
Subject:
SGP/SONDE - Wrong cal tape
DataStreams:sgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
There is something wrong with this sounding, its not clear exactly
what happened, however.  The first values reported by the radiosonde
are much different from those entered by the operator.  My impression
is that this is a calibration tape mixup.  The raw data file shows
that the sounding software was initialized twice for this sounding,
the first time showing sonde 823360910, the second time showing
sonde 819351814.  There is no enties in the operations log that
describe a problem with a sonde before launch.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewndcalcC1.c1:
  • lat(lat)
  • Flags for input v_wind values(v_wind_flags)
  • Flags for input u_wind values(u_wind_flags)
  • W-to-E Component of wind, calculated(u_wind_calc)
  • base time(base_time)
  • S-to-N Component of Wind, calculated(v_wind_calc)
  • Retrieved pressure profile(pres)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • U-component(u_wind)
  • Dry bulb temperature(tdry)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D990303.1
Start DateStart TimeEnd DateEnd Time
03/02/1999082803/02/19990828
Subject:
SGP/SONDE - Pressure jump at launch
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The difference between the sonde-reported pressure at the surface
(969.1 hPa) and the first pressure value reported after launch
(963.5) is larger than expected.  This may indicate that either
the pressure sensor was jarred at launch, that the system failed
to correctly identify the launch start time, or some other problem.

The ascent rates during the first 30 seconds of the sounding will be
incorrect as will the absolute altitudes during the sounding.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D990304.1
Start DateStart TimeEnd DateEnd Time
03/03/1999084203/03/19990842
Subject:
SGP/SONDE - Pressure jump at launch/incorrect surface values
DataStreams:sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1
Description:
There are two problems here.  First, the operator entered the values
of PTU obtained from the THWAPS as the surface values for this sounding
instead of the sonde values.  In doing so, the surface pressure was
entered incorrected (OMIS log shows both sonde and THWAPS at 969.0),
surface value is entered as 969.9.  The second problem is that apparently
the system misidentified the time of release and as a result the ascent
rates are wrong for the first 30 seconds.  The time of release problem
was caused because the operator started a new sonde instead of resetting
the system.  I am assuming that the values of PTU are correct, but I
have no way of knowing the relationship betweeen the time into the
sounding and the actual altitude/pressures.  It seems likely that the
altitudes are OK but that they do not correspond to the actual times
after phyical launch.
Measurements:sgpsondewrpnB1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnB1.a0:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lat(lat)
  • Ascent Rate(asc)
  • Mean Wind Speed(wspd)
  • Surface dew point temperature(dp)
  • lon(lon)
  • base time(base_time)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)

sgpsondewrpnB1.a1:
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Relative humidity inside the instrument enclosure(rh)
  • U-component(u_wind)
  • lat(lat)
  • Dry bulb temperature(tdry)
  • Wind Status(wstat)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)


Back To Table of Contents

DQRID : D990329.1
Start DateStart TimeEnd DateEnd Time
03/22/1999023003/22/19990230
Subject:
Incorrect surface RH
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The operator entered an incorrect value (7.5%) for the surface RH for this
sounding.  The correct value should have been 70%.  The operator noticed
the error after the sounding had been completed and reported it in his log.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D990513.1
Start DateStart TimeEnd DateEnd Time
05/10/1999113005/11/19992041
Subject:
SGP/SONDE - RH probably biased low in several soundings
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
In the process of moving storage facilties, site operations uncovered some old radiosondes 
(vintage April 1998) that were used in several soundings starting on May 10 at 0530 and 
continuing at least through May 11 at 2040.
Because these sondes are so old and pre-date Vaisala's repackaging they are likely subject 
to the sensor contamination problem that results in a dry bias in RH.  The sondes in 
question have serial numbers 816XXXXXX.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D991221.1
Start DateStart TimeEnd DateEnd Time
12/18/1999053012/18/19990530
Subject:
SGP/SONDE - Incorrect surface temperature
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The operator entered 20.0 degrees rather than the true temperature of 2.0
degrees.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents

DQRID : D991228.1
Start DateStart TimeEnd DateEnd Time
12/22/1999233012/22/19992330
Subject:
SGP/SONDE - Incorrect surface temperature
DataStreams:sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
The operator entered the surface temperature as 25 degC rather than the
correct 2.5 deg C.  This is the second time in a week this type of error
has occurred.  I have sent a separate e-mail to site ops.
Measurements:sgpsondewrpnC1.a0:
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Mean Wind Speed(wspd)
  • Ascent Rate(asc)
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • lon(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

sgpsondewrpnC1.00:
  • null(Raw data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • lon(lon)
  • V-component(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity inside the instrument enclosure(rh)
  • Dummy altitude for Zeb(alt)
  • Wind Direction(deg)
  • Retrieved pressure profile(pres)
  • Dry bulb temperature(tdry)
  • U-component(u_wind)
  • base time(base_time)
  • Surface dew point temperature(dp)
  • Mean Wind Speed(wspd)
  • lat(lat)


Back To Table of Contents



END OF DATA