DQRs for Session: 112274 User:uloehnertCompleted: 06-02-2008

Data Quality Reports for Session: 112274 User: uloehnert Completed: 06/02/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D000219.1	SGP/SONDE/C1 - Incorrect surface temperature	sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000308.1	SGP/SONDE - Questionable absolute pressures	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000308.2	SGP/SONDE - Questionable absolute pressures	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000625.1	SGP/SONDE/C1 - Operator used wrong calibration tape	sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D000801.2	SGP/SONDE/C1 - Incorrect absolute pressure	sgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D001107.1	SGP/SONDE/C1 - Incorrect surface temperature	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D041005.1	SGP/SONDE/C1 - Incorrect surface temperature	sgpsondewnpnC1.b1
D050201.1	SGP/SONDE/C1 - Possibly bad pressure sensor or operator data entry error	sgpsondewnpnC1.b1
D050421.5	SGP/SONDE/C1 - Surface pressure incorrect	sgpsondewnpnC1.b1
D050510.1	SGP/SONDE/C1 - Surface pressure bad and other data noisy	sgpsondewnpnC1.b1
D050510.2	SGP/SONDE/C1 - Surface pressure incorrect	sgpsondewnpnC1.b1
D050603.4	SGP/SONDE/C1 - Surface pressure incorrect	sgpsondewnpnC1.b1
D050725.1	SGP/SONDE/C1 - Bad RH Data	sgpsondewnpnC1.b1
D050811.5	SGP/SONDE/C1 - Bad T/RH and surface P.	sgpsondewnpnC1.b1
D050912.2	SGP/SONDE/C1 - Temperature/RH incorrect	sgplssondeC1.c1, sgpsondewnpnC1.b1
D051027.1	SGP/SONDE/C1 - Bad RH Data	sgpsondewnpnC1.b1
D051121.1	SGP/SONDE/C1 - Sonde RH values incorrect	sgpsondewnpnC1.b1
D060208.2	SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes	sgpsondewnpnC1.b1
D060227.2	SGP/SONDE/C1 - Soundings done as part of dual-sonde flights	sgpsondewnpnC1.b1
D060630.1	SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files	sgpsondewnpnC1.b1
D060928.2	SGP/SONDE/C1 - RH values offset due to error in ground check	sgpsondewnpnC1.b1
D060928.3	SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry	sgpsondewnpnC1.b1
D061201.1	SGP/SONDE/C1 - RH Sensor failure	sgpsondewnpnC1.b1
D940804.1	Possible error in humidity ground check	sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941108.4	CF Sonde Ground Check Corrections	sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980126.1	Incorrect radiosonde serial numbers	sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990124.2	SGP/SONDE - Dry bias in sonde RH	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
D991221.1	SGP/SONDE - Incorrect surface temperature	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D991228.1	SGP/SONDE - Incorrect surface temperature	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1

DQRID : D000219.1

Start Date	Start Time	End Date	End Time
02/17/2000	2330	02/17/2000	2330

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 Date	Start Time	End Date	End Time
03/03/2000	2328	03/04/2000	0051

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 Date	Start Time	End Date	End Time
03/04/2000	0229	03/04/2000	0359

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 : D000625.1

Start Date	Start Time	End Date	End Time
06/23/2000	2330	06/24/2000	0100

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 Date	Start Time	End Date	End Time
07/25/2000	0533	07/25/2000	0724

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 Date	Start Time	End Date	End Time
11/03/2000	2030	11/03/2000	2030

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 : D041005.1

Start Date	Start Time	End Date	End Time
10/02/2004	1130	10/02/2004	1131

Subject:	SGP/SONDE/C1 - Incorrect surface temperature
DataStreams:	sgpsondewnpnC1.b1
Description:	The operator entered a the surface temperature incorrectly on this sounding. The sonde data file shows the temperature as 33.5 degC but the operations log shows it as 3.5 degC. The first temperature recorded by the sonde after launch is 3.7 degC, consistent with the typical early morning inversion.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D050201.1

Start Date	Start Time	End Date	End Time
01/19/2005	0531	01/19/2005	0706

Subject:	SGP/SONDE/C1 - Possibly bad pressure sensor or operator data entry error
DataStreams:	sgpsondewnpnC1.b1
Description:	There is a discrepency between the surface pressure and temperature data entered by the operator and that recorded by the THWAPS. Review of the raw data from the radiosonde shows that the pressure was periodically varying by as much as 12 hPa (~988 to 1000)in the time period before launch. The operator entry of 998.2 is at the high end of this range - the concurrent THWAPS reading was about 988.4 at the low end. The operator entered temperature 6.2 degC is considerably higher than the THWAPS value of 1.8. The pre-flight log entry for this sounding is missing from the OMIS database. If not for the extremely unstable pressure reading I would have assumed this was an operator error. It will take some more research to figure out what is going on.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) base time(base_time) Mean Wind Speed(wspd) U-component(u_wind) Relative humidity inside the instrument enclosure(rh) lat(lat) Ascent Rate(asc) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) lon(lon) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt)

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DQRID : D050421.5

Start Date	Start Time	End Date	End Time
04/11/2005	1749	04/11/2005	1920

Subject:	SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:	sgpsondewnpnC1.b1
Description:	I think the operator inadvdertently entered an incorrect surface pressure value. The value entered is 988.8 hPa but the value shown in the raw data file at launch is 968.8. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements:	sgpsondewnpnC1.b1: Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D050510.1

Start Date	Start Time	End Date	End Time
04/26/2005	1726	04/26/2005	1910

Subject:	SGP/SONDE/C1 - Surface pressure bad and other data noisy
DataStreams:	sgpsondewnpnC1.b1
Description:	I was checking this sounding because the surface pressure entered by the operator was considerably higher than that recorded by the TWHAPS and SMOS. I'm not sure why, but the pressure data are very noisy while the sonde is on the ground (which accounts for the incorrect surface pressure) and the RH data aloft do not look terrible but do not look great either.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) base time(base_time) Mean Wind Speed(wspd) U-component(u_wind) Relative humidity inside the instrument enclosure(rh) lat(lat) Ascent Rate(asc) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) lon(lon) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt)

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DQRID : D050510.2

Start Date	Start Time	End Date	End Time
04/29/2005	2329	04/30/2005	0111

Subject:	SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:	sgpsondewnpnC1.b1
Description:	I think the operator inadvdertently typed an 89 instead of a 78 when entering the surface pressure value. The value entered is 989.9 hPa but the value shown in the raw data file at launch is 978.9. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements:	sgpsondewnpnC1.b1: Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D050603.4

Start Date	Start Time	End Date	End Time
05/11/2005	0530	05/11/2005	0750

Subject:	SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:	sgpsondewnpnC1.b1
Description:	I think the operator inadvdertently mistyped a digit when entering the surface pressure value. The value entered is 975.6 hPa but the value shown in the raw data file at launch is 972.6. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements:	sgpsondewnpnC1.b1: Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D050725.1

Start Date	Start Time	End Date	End Time
07/17/2005	2347	07/18/2005	0141

Subject:	SGP/SONDE/C1 - Bad RH Data
DataStreams:	sgpsondewnpnC1.b1
Description:	The RH values below 6 km are incorrect. The problem relates to a failure of the GC25 ground check set used before this particular sounding. The failure seems to have affected the sensor calibration with the effect that one of the two sensors was reading artificially high. Because the internal processing software uses the highest of the two sensor readings, the bad sensor value is chosen whenever it is not heated.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D050811.5

Start Date	Start Time	End Date	End Time
08/01/2005	1132	08/01/2005	0116

Subject:	SGP/SONDE/C1 - Bad T/RH and surface P.
DataStreams:	sgpsondewnpnC1.b1
Description:	Apparently multiple failures. The radiosonde temperature sensor broke on launch causing an approximate 35 degC negative offset and as a result, the RH is incorrect. Furthermore, it appears that the pressure sensor was off by approximately 4 hPa, though this would not affect the altitude calculation, the absolute pressure is wrong.
Measurements:	sgpsondewnpnC1.b1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres)

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DQRID : D050912.2

Start Date	Start Time	End Date	End Time
09/09/2005	1132	09/09/2005	1332

Subject:	SGP/SONDE/C1 - Temperature/RH incorrect
DataStreams:	sgplssondeC1.c1, sgpsondewnpnC1.b1
Description:	The temperature throughout this sounding is too high and as a result the RH values will be incorrect as well. I'm not sure what is wrong here but the operators noted reasonable values (18.1 degC, 87%) in the log before launch. Review of the raw data, however, shows the sonde reporting temperatures nearly 20 degC higher. I suppose it is possible that the operator entered into the log the reference temperature from the GC25 ground check set rather than the temperature reported by the sonde - I can't think of any other explanation - there is no doubt that the temperature sensor on this sonde was bad.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) sgplssondeC1.c1: Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry)

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DQRID : D051027.1

Start Date	Start Time	End Date	End Time
10/24/2005	1140	10/24/2005	1204

Subject:	SGP/SONDE/C1 - Bad RH Data
DataStreams:	sgpsondewnpnC1.b1
Description:	The RH values during this sounding oscillate between reasonable values and near-zero values. The oscillation is due to failure of the RH sensor heating process.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D051121.1

Start Date	Start Time	End Date	End Time
04/13/2005	2346	04/15/2005	1732

Subject:	SGP/SONDE/C1 - Sonde RH values incorrect
DataStreams:	sgpsondewnpnC1.b1
Description:	RH values for all sondes launched during this time were incorrect due to a faulty Ground Check set which damaged or conditioned the RH sensor improperly.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D060208.2

Start Date	Start Time	End Date	End Time
02/10/2006	0000	12/31/2006	2359

Subject:	SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes
DataStreams:	sgpsondewnpnC1.b1
Description:	Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 2006. The radiosonde type used for the each sounding may be determined by looking the metadata variable "launch_status" in the netCDF data files.
Measurements:	sgpsondewnpnC1.b1: lon(lon) U-component(u_wind) Mean Wind Speed(wspd) V-component(v_wind) lat(lat) Wind Direction(deg) Wind Status(wstat)

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DQRID : D060227.2

Start Date	Start Time	End Date	End Time
02/22/2006	0000	02/27/2006	0000

Subject:	SGP/SONDE/C1 - Soundings done as part of dual-sonde flights
DataStreams:	sgpsondewnpnC1.b1
Description:	The following soundings done during the subject time period were flown in dual-sonde mode in which the standard ARM RS92 radiosonde was attached to the same balloon with a NASA ATR (atmospheric temperature reference) radiosonde. The radiosondes were separated by a 6' styrofoam bar. To accommodate the additional weight, we used 1200g balloons rather than 350g balloons. Accordingly, we want to alert users that these soundings may reach higher altitudes than normal for ARM soundings and that the ascent rate may be somewhat higher. The following soundings are affected: Sequence Date UTC launch time 1 2/22 0530 2 2/22 1730 3 2/22 2330 <---- No data: launch failure 4 2/23 0230 5 2/23 0530 6 2/23 1730 7 2/23 2030 8 2/23 2330 9 2/24 2330 10 2/25 0215 11 2/25 0509 12 2/25 1730 13 2/25 1930 14 2/25 2300
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) base time(base_time) Mean Wind Speed(wspd) U-component(u_wind) Relative humidity inside the instrument enclosure(rh) lat(lat) Ascent Rate(asc) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) lon(lon) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt)

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DQRID : D060630.1

Start Date	Start Time	End Date	End Time
06/17/2006	0000	06/21/2006	2359

Subject:	SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files
DataStreams:	sgpsondewnpnC1.b1
Description:	The wind finding hardware failed so that no wind or latitude/longitude data was collected on the launches for these days.
Measurements:	sgpsondewnpnC1.b1: lon(lon) U-component(u_wind) Mean Wind Speed(wspd) V-component(v_wind) lat(lat) Wind Status(wstat)

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DQRID : D060928.2

Start Date	Start Time	End Date	End Time
08/27/2006	2332	09/25/2006	1600

Subject:	SGP/SONDE/C1 - RH values offset due to error in ground check
DataStreams:	sgpsondewnpnC1.b1
Description:	Background: After installation of the latest software update , we began performing formal ground checks on RS92 radiosondes. By comparing the radiosonde readings with reference values in a controlled environment, the ground check is intended to ensure that the radiosonde sensors are in calibration before launch. The radisonde values during the ground check process are recorded automatically; the reference values are entered by the operator. If the radiosonde readings vary from the reference values, the system 'corrects' the radiosonde values. In the case of RH, the correction is applied as an offset (true RH = indicated RH + correction). Problem: Some operators misunderstood the ground-check procedure and entered the radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done during this period have RH values that are different from what they would be if the ground check procedure had been done correctly. Consequence: Because the RH corrections generally are small (averaging about 0.5% RH) and the precision of the reported RH data during this time period is 1% RH, some values will not be affected at all; others will be off by about 1% RH (still within the stated accuracy of the sensor). Furthermore, because entering the radiosonde value as the reference value results in a near zero 'correction,' one may view these soundings as being done without the ground check correction. Also note that the dew point value will be suspect as well. I am attaching below a listing of the soundings that were affected during the indicated time period. Users can see the magnitude of the problem and choose whether or not to apply an offset in RH. Note that application of the offset to the processed RH data (in the netCDF file) will not have the same effect of applying the correction to the absolutely raw data (before processing), but the differences should be insignificant. Also note that the corrections for each sounding are included in the netCDF header information. These attributes are named 'humidity_correction' and 'humidity_correction_2'. The values of RH indicated by the radiosonde while it is in the ground check set are in attributes 'humidity_gc_sonde' and 'humidity_gc_sonde_2.' There is an RH reading for each of the two RH sensors used in the RS92 radiosonde. Here is the list - RH1 and RH2 are the radiosonde readings in the ground check set. Ref is the reference value entered by the operator. The correcte reference value should be 0%. To obtain an approximation to the RH value that would have been recorded if the ground check had been done properly, subtract the Ref value from the indicated RH. YYYYMMDD HHMM SerialN RH1 RH2 Ref 20060827 2332 B2624322 1.00 1.00 1.00 20060828 1731 B2634078 1.00 1.00 1.00 20060828 2332 B2624380 3.00 3.00 2.00 20060909 2331 B2615266 1.00 1.00 1.00 20060915 1759 B2914012 1.00 1.00 1.00 20060919 2350 B2825128 1.00 1.00 1.00 20060920 1800 B2825088 1.00 1.00 1.00 20060920 2346 B2815633 1.00 1.00 1.00 20060921 1728 B2834732 1.30 1.30 1.30 20060921 2330 B2825042 1.50 1.50 1.50 20060922 0527 B2825043 1.70 1.80 1.70 20060922 1128 B2825031 1.60 1.50 1.60 20060922 1729 B2834437 1.50 1.50 1.50 20060922 2330 B2825040 0.40 0.50 0.50 20060923 0529 B2834733 0.30 0.30 0.30 20060923 1128 B2825026 0.40 0.40 0.40 20060923 1729 B2825064 0.60 0.70 0.60 20060923 2330 B2825041 0.40 0.50 0.50 20060924 0529 B2825039 0.30 0.30 0.30 20060924 1729 B2825025 0.20 0.30 0.20 20060924 2329 B2825032 0.30 0.40 0.40 20060925 0529 B2824234 0.20 0.30 0.20
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D060928.3

Start Date	Start Time	End Date	End Time
09/28/2006	1728	12/31/9999	2359

Subject:	SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:	sgpsondewnpnC1.b1
Description:	The output precision of the following variables was increased 20060928 alt changed from 1m to 0.1m dp changed from 0.1degC to 0.01degC pres changed from 0.1 hPa to 0.01 hPa RH changed from 1%RH to 0.01%RH tdry changed from .1degC to 0.01degC Note that the increase in precision does not necessarily imply an increase in accuracy. Users are cautioned to continue to use their best scientific judgement when using these or any other data.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Dummy altitude for Zeb(alt)

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DQRID : D061201.1

Start Date	Start Time	End Date	End Time
11/27/2006	2331	11/28/2006	0056

Subject:	SGP/SONDE/C1 - RH Sensor failure
DataStreams:	sgpsondewnpnC1.b1
Description:	The differences between the two RH sensors on this sonde are unreasonably high (~20%). As a result the reported RH values oscillate by this amount during the times the sensors are alternately heated. After the heating stops, the reported RH comes from the sensor reading the higher value. There is no way of knowing if this is the correct value.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D940804.1

Start Date	Start Time	End Date	End Time
07/13/1994	1131	08/03/1994	1430

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)

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DQRID : D941108.4

Start Date	Start Time	End Date	End Time
01/21/1993	1640	08/03/1994	1430

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)

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DQRID : D980126.1

Start Date	Start Time	End Date	End Time
01/01/1998	0000	12/31/1999	2359

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)

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DQRID : D990124.2

Start Date	Start Time	End Date	End Time
05/27/1992	0000	05/31/2002	2359

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)

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DQRID : D991221.1

Start Date	Start Time	End Date	End Time
12/18/1999	0530	12/18/1999	0530

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)

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DQRID : D991228.1

Start Date	Start Time	End Date	End Time
12/22/1999	2330	12/22/1999	2330

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)

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