Data Quality Reports for Session: 113827 User: drife Completed: 08/22/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
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
D990210.1SGP/SONDE - Wrong cal tapesgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1


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 : 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)

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