DQRs for Session: 114377 User:drifeCompleted: 09-24-2008

Data Quality Reports for Session: 114377 User: drife Completed: 09/24/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D011207.3	SGP/SONDE/C1 - Bad temp (other?) data in 12/3/01:2328 sounding	sgpsondeC1.00, sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D011231.1	SGP/SONDE/C1 - Bad temperature in CF sounding 12/22/01:0527	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D011231.2	SGP/SONDE/C1 - Bad temperature data CF sounding 12/28/01:2326	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020110.1	SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020524.27	SGP/SONDE/C1 - CF sounding 20020522:1130 bad temperature/RH	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020526.1	SGP/SONDE/C1 - Bad T/RH data in CF sounding 20020523:1129	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020611.2	SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etc	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020626.34	SGP/SONDE/C1 - Incorrect Surface Pressure	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020626.35	SGP/SONDE/C1 - Bad Temperature Sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020703.1	SGP/SONDE/C1 - Temperature sensor failure	sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020909.1	SGP/SONDE/C1 - Bad Temperature Sensor	sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020909.2	SGP/SONDE/C1 - Bad Temperature Sensor	sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021006.1	Bad temperature sensor	sgplssondeC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021117.1	SGP/SONDE/C1 - Questionable RH: CF sounding 11/13/2002:2044	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021121.1	SGP/SONDE/C1 - Contaminated by interference	sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021123.2	SGP/SONDE/C1 - Interference CF sounding 20021120:0225	sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021201.1	SGP/SONDE/C1 - Questionable RH CF sounding 0211211:1130	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030114.1	SGP/SONDE/C1 - Bad RH Data	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030122.1	SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030206.5	SGP/SONDE/C1 - Bad temperature/RH	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030330.1	SGP/Sonde/C1 - Bad temperature, RH	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030409.1	SGP/Sonde/C1 - Bad RH in sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.1	SGP/Sonde/C1 - Sondes launched an hour early	sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.2	SGP/Sonde/C1 - Incorrect surface temperature on CF sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.3	SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems	sgplssondeC1.c1, sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030419.2	SGP/SONDE/C1 - Broken Temperature Sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030427.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030507.3	SGP/SONDE/C1 - Broken temperature sensors	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030614.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030707.7	SGP/SONDE/C1 - Incorrect surface RH value.	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030722.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030807.1	SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D031112.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.b1
D040127.2	SGP/SONDE/C1 - Bad RH Data	sgpsondewnpnC1.b1
D040219.1	SGP/SONDE/C1 - Bad RH Data	sgpsondewnpnC1.b1
D040219.2	SGP/SONDE/C1 - Surface pressure incorrect	sgpsondewnpnC1.b1
D040223.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.b1
D040301.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.b1
D040415.2	SGP/SONDE/C1 - Temperature sensor broke high into the sounding	sgpsondewnpnC1.b1
D041005.1	SGP/SONDE/C1 - Incorrect surface temperature	sgpsondewnpnC1.b1
D041013.4	SGP/SONDE/C1 - Scheduled Soundings Missed	sgpsondeC1.00, 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
D060303.1	SGP/SONDE/C1 - DigiCORAIII failed, replaced with S01/S02 launches	sgpsondeC1.00, sgpsondewnpnC1.b1
D060928.3	SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry	sgpsondewnpnC1.b1
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

DQRID : D011207.3

Start Date	Start Time	End Date	End Time
12/03/2001	2328	12/04/2001	0158

Subject:	SGP/SONDE/C1 - Bad temp (other?) data in 12/3/01:2328 sounding
DataStreams:	sgpsondeC1.00, sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It looks as though the temperature sensor was damaged on launch. The recorded temp goes from 16.4 at the surface to -42.6 at 2 seconds into the flight. The temperature never exceeds -42 though the RH and pressure look reasonable, but probably should be considered questionable.
Measurements:	sgpsondewnpnC1.00: null(Raw data stream - documentation not supported) sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) sgpsondeC1.00: null(Raw data stream - documentation not supported)

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DQRID : D011231.1

Start Date	Start Time	End Date	End Time
12/22/2001	0527	12/22/2001	0659

Subject:	SGP/SONDE/C1 - Bad temperature in CF sounding 12/22/01:0527
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature data in this sounding look bad after the first value. The temperature series is 11.4, 2.6, -14.3, -32.4 in the first 6 seconds of flight. I don't know why this occurred, but it obviously is incorrect. The pressure and RH data look reasonable.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry)

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DQRID : D011231.2

Start Date	Start Time	End Date	End Time
12/28/2001	2326	12/29/2001	0045

Subject:	SGP/SONDE/C1 - Bad temperature data CF sounding 12/28/01:2326
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature data in this sounding are bad from approximately 16 seconds into the flight. The temperature series is 9.9, 10.8, 11.3, 1.5, 11.6, 11.6, 11.6, -32.2 and remains below -30 degC. I don't know why this occurred, but it clearly is incorrect. The pressure data looks OK as does the RH, though the RH data are missing (probably sensor failure) above roughly 3.5 km.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry)

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DQRID : D020110.1

Start Date	Start Time	End Date	End Time
01/08/2002	0528	01/08/2002	0714

Subject:	SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	Temperature values in this sounding went from 3.5 degC at the surface to -33.3 degC at the next sample. It appears that all the remaining temperature values have an approximate -35 degC offset. The pressure and RH values appear reasonable.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry)

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DQRID : D020524.27

Start Date	Start Time	End Date	End Time
05/22/2002	1130	05/22/2002	1347

Subject:	SGP/SONDE/C1 - CF sounding 20020522:1130 bad temperature/RH
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the sonde sensor boom was damaged upon launch. The result is that no RH data are reported and the reported temperature is something on the order of 60 degC too low.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Dummy altitude for Zeb(alt) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D020526.1

Start Date	Start Time	End Date	End Time
05/23/2002	1129	05/23/2002	1322

Subject:	SGP/SONDE/C1 - Bad T/RH data in CF sounding 20020523:1129
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the sensor boom was damaged shortly after launch. The temperature reading jumps -60 degC and the RH goes to 0.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Dummy altitude for Zeb(alt) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D020611.2

Start Date	Start Time	End Date	End Time
06/09/2002	0229	06/09/2002	0236

Subject:	SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etc
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature and RH for this sounding look bad, either because of interference from another sonde or because the temperature sensor was broken on launch. The sounding terminated early in any event.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Dummy altitude for Zeb(alt) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D020626.34

Start Date	Start Time	End Date	End Time
06/17/2002	1128	06/17/2002	1313

Subject:	SGP/SONDE/C1 - Incorrect Surface Pressure
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the operator made a typographical error when entering the surface pressure. The file has 987.0 hPa and it probably should be 978.0 which would be consistent with the first sample provided by the radiosonde (977.3 hPa), the surface pressures recorded for the adjacent soundings, and the THWAPS pressure. Because the sounding altitude is calculated assuming the surface pressure is correct, the altitude values for the entire flight and the ascent rate values for the first 30 seconds of the sounding will be incorrect.
Measurements:	sgpsondewnpnC1.a1: Dummy altitude for Zeb(alt) Ascent Rate(asc) sgpsondewnpnC1.b1: Ascent Rate(asc) Dummy altitude for Zeb(alt)

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DQRID : D020626.35

Start Date	Start Time	End Date	End Time
06/19/2002	2329	06/20/2002	0036

Subject:	SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the temperature sensor broke shortly after launch. As a result, the temperature and dewpoint values are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D020703.1

Start Date	Start Time	End Date	End Time
06/27/2002	1728	06/27/2002	1908

Subject:	SGP/SONDE/C1 - Temperature sensor failure
DataStreams:	sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	Temperature sensor broke at launch. All temperature-related variables are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) sgpqmemwrcolC1.c1: Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde) Integrated vapor column from sonde using a direct calculation (external from the IPM)(integ_vap_sonde_direct)

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DQRID : D020909.1

Start Date	Start Time	End Date	End Time
09/06/2002	1727	09/06/2002	1854

Subject:	SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:	sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the temperature sensor broke upon launch and therefore the reported temperature is approximately 40 degC too low.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) sgpqmemwrcolC1.c1: Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde) sgplssondeC1.c1: Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry)

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DQRID : D020909.2

Start Date	Start Time	End Date	End Time
09/06/2002	0527	09/06/2002	0718

Subject:	SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:	sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the temperature sensor broke shortly after launch. Temperatures are offset by approxmiately (but not constantly) 40 degC.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) sgpqmemwrcolC1.c1: Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde) sgplssondeC1.c1: Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry)

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DQRID : D021006.1

Start Date	Start Time	End Date	End Time
10/03/2002	1120	10/03/2002	1320

Subject:	Bad temperature sensor
DataStreams:	sgplssondeC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the temperture sensor broke a few seconds into flight. This results in an unreasonably low temperature for the rest of the flight. For some reason, the rh values also go missing shortly after launch. Only the wind and pressure data are reliable.
Measurements:	sgpsondewnpnC1.a1: Dummy altitude for Zeb(alt) Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Dry bulb temperature(tdry) Dummy altitude for Zeb(alt) sgplssondeC1.c1: Dummy altitude for Zeb(alt) Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry)

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DQRID : D021117.1

Start Date	Start Time	End Date	End Time
11/13/2002	2044	11/13/2002	2205

Subject:	SGP/SONDE/C1 - Questionable RH: CF sounding 11/13/2002:2044
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The RH data in this sounding is erratic between 2km and 10 km, oscillating between reasonable values (~40%RH) and zero. I certainly doubt that this is a real, heretofore unreported, atmospheric phenomenon so I have to conclude that something is probably wrong with the sensor. I have not seen this behavior before. One would have to look at the absolutely raw RH data to explore further.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D021121.1

Start Date	Start Time	End Date	End Time
11/19/2002	1423	11/19/2002	1623
11/19/2002	1726	11/19/2002	1917
11/19/2002	2026	11/19/2002	2204

Subject:	SGP/SONDE/C1 - Contaminated by interference
DataStreams:	sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	These three soundings are contaminated by interference from another radiosonde. It is not clear why; this doesn't usually happen at the CF where the operators are very experienced and frequency separation is not usually a problem.
Measurements:	sgpsondewnpnC1.a1: Mean Wind Speed(wspd) Dummy altitude for Zeb(alt) V-component(v_wind) base time(base_time) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Wind Direction(deg) Wind Status(wstat) U-component(u_wind) Surface dew point temperature(dp) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) lat(lat) lon(lon) Retrieved pressure profile(pres) sgpsondewnpnC1.b1: Mean Wind Speed(wspd) U-component(u_wind) lat(lat) Ascent Rate(asc) lon(lon) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt) Surface dew point temperature(dp) base time(base_time) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) Dry bulb temperature(tdry) sgpsondeC1.00: null(Raw data stream - documentation not supported)

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DQRID : D021123.2

Start Date	Start Time	End Date	End Time
11/20/2002	0225	11/20/2002	0412

Subject:	SGP/SONDE/C1 - Interference CF sounding 20021120:0225
DataStreams:	sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	Like several soundings on 11/19, this sounding was affected by interference from another radiosonde.
Measurements:	sgpsondewnpnC1.a1: Mean Wind Speed(wspd) Dummy altitude for Zeb(alt) V-component(v_wind) base time(base_time) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Wind Direction(deg) Wind Status(wstat) U-component(u_wind) Surface dew point temperature(dp) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) lat(lat) lon(lon) Retrieved pressure profile(pres) sgpsondewnpnC1.b1: Mean Wind Speed(wspd) U-component(u_wind) lat(lat) Ascent Rate(asc) lon(lon) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt) Surface dew point temperature(dp) base time(base_time) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) Dry bulb temperature(tdry) sgpsondeC1.00: null(Raw data stream - documentation not supported)

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DQRID : D021201.1

Start Date	Start Time	End Date	End Time
11/21/2002	1130	11/21/2002	1311

Subject:	SGP/SONDE/C1 - Questionable RH CF sounding 0211211:1130
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The RH samples in this sounding oscillate between reasonable values (60-80%) and zero. This may be a problem with the RH sensor or the software that alternates between the heated and non-heated RH elements. In either case, the reported values are questionable. More investigation of the raw binary data would be required to diagnose further.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030114.1

Start Date	Start Time	End Date	End Time
01/11/2003	0536	01/11/2003	0551

Subject:	SGP/SONDE/C1 - Bad RH Data
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The RH values during the first 15 minutes of this sounding oscillate between reasonable values and near-zero values. The oscillation is irregular and seems to be related to failure of the RH sensor heating process. I have informed Vaisala of the problem and provided raw data files to them for analysis.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030122.1

Start Date	Start Time	End Date	End Time
01/19/2003	1134	01/19/2003	1259

Subject:	SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The radiosonde temperature sensor apparently broke during launch. This results in bad temperature, dew point, and rh data.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030206.5

Start Date	Start Time	End Date	End Time
02/02/2003	1732	02/02/2003	1832

Subject:	SGP/SONDE/C1 - Bad temperature/RH
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke shortly after launch. All temperature and RH-related data are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030330.1

Start Date	Start Time	End Date	End Time
03/18/2003	1132	03/18/2003	1322
03/20/2003	1131	03/20/2003	1140
03/20/2003	1731	03/20/2003	1904

Subject:	SGP/Sonde/C1 - Bad temperature, RH
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	These three soundings all show the effects of a temperature sensor broken at launch. The temperature, RH, dew-point values all are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030409.1

Start Date	Start Time	End Date	End Time
04/06/2003	1144	04/06/2003	1203

Subject:	SGP/Sonde/C1 - Bad RH in sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The RH sensor heating circuit was out of synch from about 400 sec after launch until the circuit was turned off whent he sounding temperature reached approximately 233 degK (-40 degC) about 1500 sec after launch. During this time period the reported RH oscillates between reasonable values and near-zero values.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030411.1

Start Date	Start Time	End Date	End Time
04/06/2003	2200	04/07/2003	0700

Subject:	SGP/Sonde/C1 - Sondes launched an hour early
DataStreams:	sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It looks like someone forgot to set his/her clock ahead. The sounding that should have been done at 23:30 UTC on 4/6 was done at 22:38 and the following sounding, which should have been done at 0530 on 4/7 was done at 04:31. The subsequent soundings all are done at the correct times.
Measurements:	sgpsondewnpnC1.00: null(Raw data stream - documentation not supported) sgpsondewnpnC1.a1: Mean Wind Speed(wspd) Dummy altitude for Zeb(alt) V-component(v_wind) base time(base_time) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Wind Direction(deg) Wind Status(wstat) U-component(u_wind) Surface dew point temperature(dp) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) lat(lat) lon(lon) Retrieved pressure profile(pres) sgpsondewnpnC1.b1: Mean Wind Speed(wspd) U-component(u_wind) lat(lat) Ascent Rate(asc) lon(lon) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt) Surface dew point temperature(dp) base time(base_time) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) Dry bulb temperature(tdry)

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DQRID : D030411.2

Start Date	Start Time	End Date	End Time
04/06/2003	2238	04/06/2003	2238

Subject:	SGP/Sonde/C1 - Incorrect surface temperature on CF sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the operator entered an incorrect value for surface temperature. Rather than 43.2 degC in the file, the value is most likely 19. degC (thwaps reading 19.4, first sonde reading aloft 18.6).
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) sgpsondewnpnC1.b1: Dry bulb temperature(tdry)

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DQRID : D030411.3

Start Date	Start Time	End Date	End Time
04/01/2003	1730	04/01/2003	1930
04/02/2003	0530	04/02/2003	0730
04/02/2003	1130	04/02/2003	1330

Subject:	SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems
DataStreams:	sgplssondeC1.c1, sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	These sonde launches where unsuccessful due to problems with the antenna configuration resulting in signal loss before the launch.
Measurements:	sgpsondewnpnC1.a1: Mean Wind Speed(wspd) V-component(v_wind) Dummy altitude for Zeb(alt) base time(base_time) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) U-component(u_wind) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) lat(lat) lon(lon) Retrieved pressure profile(pres) sgpsondewnpnC1.b1: U-component(u_wind) Mean Wind Speed(wspd) lat(lat) Ascent Rate(asc) lon(lon) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt) Surface dew point temperature(dp) base time(base_time) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) Dry bulb temperature(tdry) sgpsondeC1.00: null(Raw data stream - documentation not supported) sgplssondeC1.c1: lon(lon) Dummy altitude for Zeb(alt) base time(base_time) Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry) lat(lat) Time offset of tweaks from base_time(time_offset)

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DQRID : D030419.2

Start Date	Start Time	End Date	End Time
04/15/2003	2332	04/16/2003	0124

Subject:	SGP/SONDE/C1 - Broken Temperature Sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke shortly after launch as a result all variables that are affected by temperature are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030427.1

Start Date	Start Time	End Date	End Time
04/18/2003	1130	04/18/2003	1310

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor on this radiosonde broke after launch. All temperature-related variables (dp, tdry, rh) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030507.3

Start Date	Start Time	End Date	End Time
05/04/2003	1130	05/04/2003	1145
05/04/2003	2330	05/05/2003	0116

Subject:	SGP/SONDE/C1 - Broken temperature sensors
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensors broke at launch on both of these soundings. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030614.1

Start Date	Start Time	End Date	End Time
06/09/2003	1730	06/09/2003	1737

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030707.7

Start Date	Start Time	End Date	End Time
06/22/2003	2331	06/22/2003	2331

Subject:	SGP/SONDE/C1 - Incorrect surface RH value.
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The surface RH value, reported as 0%RH should be 52%. This resulted from a typographical error by the operator when entering the surface data.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030722.1

Start Date	Start Time	End Date	End Time
07/19/2003	1730	07/19/2003	1930

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030807.1

Start Date	Start Time	End Date	End Time
08/02/2003	1725	08/02/2003	1726

Subject:	SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	I've never seen this before. The temperature reported by the radiosonde dropped over 30 degC just after launch (usually a symptom of a broken temperature sensor), but then recovered after 14 seconds of bad readings. The temperatures from 2 seconds through 14 seconds after launch are incorrect, the remainder of the sounding looks fine. I have sent the data files to Vaisala for their consideration.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry)

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DQRID : D031112.1

Start Date	Start Time	End Date	End Time
11/01/2003	1133	11/01/2003	1315

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D040127.2

Start Date	Start Time	End Date	End Time
01/16/2004	2015	01/16/2004	2151

Subject:	SGP/SONDE/C1 - Bad RH Data
DataStreams:	sgpsondewnpnC1.b1
Description:	The RH values during the first half of this sounding oscillate between reasonable values and near-zero values. The oscillation is irregular and seems to be related 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 : D040219.1

Start Date	Start Time	End Date	End Time
02/09/2004	0530	02/09/2004	0601

Subject:	SGP/SONDE/C1 - Bad RH Data
DataStreams:	sgpsondewnpnC1.b1
Description:	The RH values during the first part of this sounding oscillate between reasonable values and near-zero values. The oscillation seems to be related 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 : D040219.2

Start Date	Start Time	End Date	End Time
02/02/2004	0530	02/02/2004	0826

Subject:	SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:	sgpsondewnpnC1.b1
Description:	I think the operator inadvdertently transposed to digits when entering the surface pressure value. The value entered is 987.0 hPa but the value shown in the raw data file at launch is 978.0. 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 : D040223.1

Start Date	Start Time	End Date	End Time
02/19/2004	1746	02/19/2004	1946

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D040301.1

Start Date	Start Time	End Date	End Time
02/27/2004	0531	02/27/2004	0721

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.b1
Description:	The temperature sensor broke shortly after launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D040415.2

Start Date	Start Time	End Date	End Time
04/13/2004	1229	04/13/2004	1301

Subject:	SGP/SONDE/C1 - Temperature sensor broke high into the sounding
DataStreams:	sgpsondewnpnC1.b1
Description:	The temperature sensor on this radiosonde appeared to break 56 minutes and 22 seconds into the sounding at an altitude of 16570 m. All the data below this point are good; only the data above this point to the end of the sounding (88 minutes and 14 seconds) are bad.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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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 : D041013.4

Start Date	Start Time	End Date	End Time
01/16/2004	2330	01/17/2004	1830
01/18/2004	0530	01/18/2004	0630
01/21/2004	0530	01/21/2004	0630

Subject:	SGP/SONDE/C1 - Scheduled Soundings Missed
DataStreams:	sgpsondeC1.00, sgpsondewnpnC1.b1
Description:	The following scheduled sonde launches were missed due to computer system failures: 20040116.2330 20040117.0530 20040117.1130 20040117.1730 20040118.0530 20040121.0530
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) sgpsondeC1.00: null(Raw data stream - documentation not supported)

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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 : D060303.1

Start Date	Start Time	End Date	End Time
01/17/2004	2331	01/18/2004	0108
01/18/2004	1138	01/18/2004	1252
01/18/2004	1729	01/18/2004	1852
01/18/2004	2339	01/19/2004	0111
01/19/2004	0531	01/19/2004	0711
01/19/2004	1136	01/19/2004	1316
01/19/2004	1723	01/19/2004	1752
01/19/2004	2331	01/20/2004	0101
01/20/2004	0531	01/20/2004	0703
01/20/2004	1132	01/20/2004	1332
01/20/2004	1728	01/20/2004	1928
01/20/2004	2330	01/21/2004	0130
01/21/2004	1731	01/21/2004	1931

Subject:	SGP/SONDE/C1 - DigiCORAIII failed, replaced with S01/S02 launches
DataStreams:	sgpsondeC1.00, sgpsondewnpnC1.b1
Description:	The digiCORA-III failed on Saturday 2004-01-17. The operators reported that they were unable to load the software and conduct normal soundings. Following procedure, they conducted the regular soundings by using the S01/S02 systems as allowed by the AIRS IOP schedule. The netCDF header fields "input_source" and "facility_id" will mention which of the S01/S02 systems was used in these launches.
Measurements:	sgpsondewnpnC1.b1: lon(lon) lat(lat) Dummy altitude for Zeb(alt) sgpsondeC1.00: null(Raw data stream - documentation not supported)

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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 : 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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