DQR ID | Subject | Data Streams Affected |
---|---|---|
D020110.1 | SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528 | sgpsondewnpnC1.a1, sgpsondewnpnC1.b1 |
D020418.18 | SGP/SMOS/E13 - E13 SMOS WIND SPEED DATA INCORRECT | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1 |
D020419.1 | SGP/SMOS - Ice Storms disrupted power; data missing | sgp1smosE1.a1, sgp1smosE1.b1, sgp1smosE3.a1, sgp1smosE3.b1, sgp1smosE4.a1, sgp1smosE4.b1, sgp1smosE5.a1, sgp1smosE5.b1, sgp1smosE6.a1, sgp1smosE6.b1, sgp1smosE7.a1, sgp1smosE7.b1, sgp1smosE8.a1, sgp1smosE8.b1, sgp1smosE11.a1, sgp1smosE11.b1, sgp1smosE13.a1, sgp1smosE13.b1, sgp1smosE15.a1, sgp1smosE15.b1, sgp1smosE20.a1, sgp1smosE20.b1, sgp1smosE21.a1, sgp1smosE21.b1, sgp1smosE24.a1, sgp1smosE24.b1, sgp1smosE25.a1, sgp1smosE25.b1, sgp30smosE1.a1, sgp30smosE1.b1, sgp30smosE3.a1, sgp30smosE3.b1, sgp30smosE4.a1, sgp30smosE4.b1, sgp30smosE5.a1, sgp30smosE5.b1, sgp30smosE6.a1, sgp30smosE6.b1, sgp30smosE7.a1, sgp30smosE7.b1, sgp30smosE8.a1, sgp30smosE8.b1, sgp30smosE11.a1, sgp30smosE11.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp30smosE15.a1, sgp30smosE15.b1, sgp30smosE20.a1, sgp30smosE20.b1, sgp30smosE21.a1, sgp30smosE21.b1, sgp30smosE24.a1, sgp30smosE24.b1, sgp30smosE25.a1, sgp30smosE25.b1, sgp1440smosE1.a1, sgp1440smosE3.a1, sgp1440smosE4.a1, sgp1440smosE5.a1, sgp1440smosE6.a1, sgp1440smosE7.a1, sgp1440smosE8.a1, sgp1440smosE11.a1, sgp1440smosE13.a1, sgp1440smosE15.a1, sgp1440smosE20.a1, sgp1440smosE21.a1, sgp1440smosE24.a1, sgp1440smosE25.a1 |
D020419.11 | SGP/SMOS/E13 - E13 SMOS DATA MISSING | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
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 |
D020705.10 | SGP/SMOS/E13 - E13 BAROMETRIC PRESSURE VALUES INCORRECT | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.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 |
D030131.2 | SGP/SMOS/E13 - Erroneous Tips in Precip Data | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1 |
D030206.1 | SGP/SMOS/E13 - WIND SPEED VALUES LOW DUE TO ICING | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
D030206.5 | SGP/SONDE/C1 - Bad temperature/RH | sgpsondewnpnC1.a1, sgpsondewnpnC1.b1 |
D030214.1 | SGP/MWR/B4/C1 - LOS cycle skipping | sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D030312.10 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgp1mwravgC1.c1, sgp5mwravgC1.c1 |
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 | sgpsondeC1.00, sgplssondeC1.c1, 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 |
D030822.1 | SGP/MWR/C1 - Incorrect min and max values | sgpmwrlosC1.b1 |
D030902.1 | SGP/MWR/C1 - no air temperature signal | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D030905.1 | SGP/SMOS/E13 - Sensor failure | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
D030917.4 | SGP/SMOS/E13 - Missing data due to Ice storm and clock problems | sgpsmosE13.00, sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
D031112.1 | SGP/SONDE/C1 - Broken temperature sensor | sgpsondewnpnC1.b1 |
D040318.10 | SGP/SMOS/E13 - 6-month Calibration Checks | sgp1smosE13.b1, sgp30smosE13.b1, sgp1440smosE13.b1 |
D040318.9 | SGP/SMOS/E13 - 6-month Calibration Checks | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
D040824.1 | SGP/MWR/C1 - Wet window flag "on" more frequently than expected | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D050203.3 | SGP/MWR/C1 - spare instrument | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D050722.1 | SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpqmemwrcolC1.c1 |
D051011.6 | SGP/MWR/C1 - New software version (4.15) installed | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D060928.3 | SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry | sgpsondewnpnC1.b1 |
D990124.2 | SGP/SONDE - Dry bias in sonde RH | 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, DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, sgpsondeptuC1.00, DsgpsondeptuB1.00, DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, 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, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1, DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1 |
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:
sgpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 0600 | 01/30/2002 | 1805 |
Subject: | SGP/SMOS/E13 - E13 SMOS WIND SPEED DATA INCORRECT |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1 |
Description: | Wind speed data incorrect due to ice accumulation on the sensor. Ice accumulated during an ice storm. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1smosE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/29/2002 | 0000 | 01/30/2002 | 0000 |
Subject: | SGP/SMOS - Ice Storms disrupted power; data missing |
DataStreams: | sgp1smosE1.a1, sgp1smosE1.b1, sgp1smosE3.a1, sgp1smosE3.b1, sgp1smosE4.a1, sgp1smosE4.b1, sgp1smosE5.a1, sgp1smosE5.b1, sgp1smosE6.a1, sgp1smosE6.b1, sgp1smosE7.a1, sgp1smosE7.b1, sgp1smosE8.a1, sgp1smosE8.b1, sgp1smosE11.a1, sgp1smosE11.b1, sgp1smosE13.a1, sgp1smosE13.b1, sgp1smosE15.a1, sgp1smosE15.b1, sgp1smosE20.a1, sgp1smosE20.b1, sgp1smosE21.a1, sgp1smosE21.b1, sgp1smosE24.a1, sgp1smosE24.b1, sgp1smosE25.a1, sgp1smosE25.b1, sgp30smosE1.a1, sgp30smosE1.b1, sgp30smosE3.a1, sgp30smosE3.b1, sgp30smosE4.a1, sgp30smosE4.b1, sgp30smosE5.a1, sgp30smosE5.b1, sgp30smosE6.a1, sgp30smosE6.b1, sgp30smosE7.a1, sgp30smosE7.b1, sgp30smosE8.a1, sgp30smosE8.b1, sgp30smosE11.a1, sgp30smosE11.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp30smosE15.a1, sgp30smosE15.b1, sgp30smosE20.a1, sgp30smosE20.b1, sgp30smosE21.a1, sgp30smosE21.b1, sgp30smosE24.a1, sgp30smosE24.b1, sgp30smosE25.a1, sgp30smosE25.b1, sgp1440smosE1.a1, sgp1440smosE3.a1, sgp1440smosE4.a1, sgp1440smosE5.a1, sgp1440smosE6.a1, sgp1440smosE7.a1, sgp1440smosE8.a1, sgp1440smosE11.a1, sgp1440smosE13.a1, sgp1440smosE15.a1, sgp1440smosE20.a1, sgp1440smosE21.a1, sgp1440smosE24.a1, sgp1440smosE25.a1 |
Description: | Data is missing for these sites due to an ice storm disrupting power and communications. |
Measurements: | sgp1smosE21.b1:
sgp1smosE24.b1:
sgp30smosE4.a1:
sgp1smosE8.a1:
sgp1smosE4.a1:
sgp1smosE20.a1:
sgp1smosE3.a1:
sgp30smosE20.b1:
sgp1smosE4.b1:
sgp1smosE11.b1:
sgp1smosE13.a1:
sgp1440smosE24.a1:
sgp1440smosE13.a1:
sgp30smosE15.a1:
sgp1smosE5.a1:
sgp1smosE7.a1:
sgp1smosE24.a1:
sgp1smosE3.b1:
sgp1440smosE21.a1:
sgp30smosE8.b1:
sgp30smosE5.a1:
sgp1smosE8.b1:
sgp1smosE13.b1:
sgp30smosE21.a1:
sgp1440smosE7.a1:
sgp1smosE1.b1:
sgp30smosE25.a1:
sgp30smosE5.b1:
sgp1smosE20.b1:
sgp30smosE1.b1:
sgp1smosE15.b1:
sgp1440smosE8.a1:
sgp30smosE6.a1:
sgp1440smosE6.a1:
sgp1440smosE3.a1:
sgp1smosE25.a1:
sgp30smosE1.a1:
sgp30smosE7.b1:
sgp1smosE11.a1:
sgp30smosE8.a1:
sgp30smosE7.a1:
sgp1smosE7.b1:
sgp1440smosE5.a1:
sgp1440smosE1.a1:
sgp30smosE15.b1:
sgp30smosE24.a1:
sgp30smosE13.a1:
sgp30smosE3.b1:
sgp30smosE11.a1:
sgp30smosE20.a1:
sgp1440smosE25.a1:
sgp1smosE15.a1:
sgp1440smosE11.a1:
sgp30smosE25.b1:
sgp1smosE25.b1:
sgp30smosE4.b1:
sgp1smosE1.a1:
sgp30smosE11.b1:
sgp30smosE3.a1:
sgp30smosE24.b1:
sgp30smosE13.b1:
sgp1440smosE4.a1:
sgp1smosE6.b1:
sgp30smosE6.b1:
sgp1smosE6.a1:
sgp30smosE21.b1:
sgp1440smosE15.a1:
sgp1smosE5.b1:
sgp1smosE21.a1:
sgp1440smosE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 0001 | 02/11/2002 | 1508 |
Subject: | SGP/SMOS/E13 - E13 SMOS DATA MISSING |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
Description: | Data missing due to power and communications disruption due to an ice storm. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1440smosE13.a1:
sgp1smosE13.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
sgpqmemwrcolC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/11/2002 | 1508 | 02/11/2002 | 1531 |
Subject: | SGP/SMOS/E13 - E13 BAROMETRIC PRESSURE VALUES INCORRECT |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1 |
Description: | Barometric pressure values artificially low due to program and power restoration after a prolonged power outage. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1smosE13.b1:
|
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:
sgpsondewnpnC1.b1:
sgpqmemwrcolC1.c1:
sgplssondeC1.c1:
|
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:
sgpsondewnpnC1.b1:
sgpqmemwrcolC1.c1:
sgplssondeC1.c1:
|
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:
sgpsondewnpnC1.b1:
sgplssondeC1.c1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
sgpsondeC1.00:
|
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:
sgpsondewnpnC1.b1:
sgpsondeC1.00:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/2002 | 0000 | 10/20/2002 | 0000 |
Subject: | SGP/SMOS/E13 - Erroneous Tips in Precip Data |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1 |
Description: | Erroneous tips were being generated from an unknown source. Reed switch was finally replaced and the problem did not reappear. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1smosE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/2002 | 1949 | 12/06/2002 | 1730 |
Subject: | SGP/SMOS/E13 - WIND SPEED VALUES LOW DUE TO ICING |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
Description: | The wind speed values were artificailly low due to icing on the propellor vanes. Wind direction values were not affected. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1440smosE13.a1:
sgp1smosE13.b1:
|
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:
sgpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/2002 | 2034 | 11/05/2002 | 1815 |
Subject: | SGP/MWR/B4/C1 - LOS cycle skipping |
DataStreams: | sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
Description: | When MWR software version 4.12 was installed at the SGP, it was observed that the MWRs at CF and BF4 skip line-of-sight (LOS) observing cycles. In LOS mode, the software begins an observing cycle at 0, 20, and 40 seconds after the minute to provide 3 LOS cycles per minute. If a cycle is delayed so that it takes more than 20 seconds to complete, then the next start time is missed, the cycle is skipped, and the data that would have been acquired are lost. It was demonstrated that the interaction with the IRT at CF slowed the MWR observing cycle noticeably and contributed significantly to the LOS cycle skipping. The IRT was removed from the MWR on 5 November 2002 and the LOS cycle skipping at the CF was resolved. The IRT data are now available in a new separate datastream: sgpirtC1.a1 (and soon sgpirt2sC1.a1). The BF4 cycle skipping may have resulted from a combination of an additional air temperature sensor on this instrument and the use of a fiber optic cable. However, the cycle skipping on this instrument appears to have abated without modifications to the instrument configuration. |
Measurements: | sgpmwrlosB4.b1:
sgpmwrlosC1.b1:
sgpmwrlosC1.a1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/17/1999 | 1800 | 07/31/2002 | 2034 |
Subject: | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgp1mwravgC1.c1, sgp5mwravgC1.c1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgp5mwravgC1.c1:
sgpmwrlosC1.b1:
sgp1mwravgC1.c1:
sgpmwrlosC1.a1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.a1:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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: | sgpsondeC1.00, sgplssondeC1.c1, 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:
sgpsondewnpnC1.b1:
sgpsondeC1.00:
sgplssondeC1.c1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
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:
sgpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/2002 | 0000 | 02/10/2003 | 2359 |
Subject: | SGP/MWR/C1 - Incorrect min and max values |
DataStreams: | sgpmwrlosC1.b1 |
Description: | The values of valid_min and valid_max applied to fields tkxc and tknd were incorrect. They should be 303 and 333, respectively. |
Measurements: | sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/22/2003 | 2115 | 09/30/2004 | 1835 |
Subject: | SGP/MWR/C1 - no air temperature signal |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air temperature sensor failed to properly report. It was determined that the wires carrying the signal to the analog board did not conform to the standard expected by the upgraded blower. The problem was corrected by changing the wiring. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/30/2003 | 1415 | 09/04/2003 | 1113 |
Subject: | SGP/SMOS/E13 - Sensor failure |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
Description: | Beginning around 1415 UTC on 08/30, the RH readings for this instrument were frequently around 0 (sometimes there are erratic spikes upward from 0 for periods of time). Rainfall appears to have been the cause of the erroneous readings, as the instrument appeared to fail in and around the time of heavy rains. A maintenance visit occurred on 09/04, afterwards data returned to normal values. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1440smosE13.a1:
sgp1smosE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/09/2002 | 2006 | 03/11/2002 | 2008 |
03/13/2002 | 1806 | 03/14/2002 | 1508 |
Subject: | SGP/SMOS/E13 - Missing data due to Ice storm and clock problems |
DataStreams: | sgpsmosE13.00, sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
Description: | Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1440smosE13.a1:
sgp1smosE13.b1:
sgpsmosE13.00:
|
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/16/2003 | 1827 | 10/16/2003 | 1855 |
04/15/2004 | 1958 | 04/15/2004 | 2020 |
10/28/2004 | 1835 | 10/28/2004 | 1855 |
04/15/2005 | 1435 | 04/15/2005 | 1455 |
11/23/2005 | 1940 | 11/23/2005 | 1953 |
05/01/2006 | 1438 | 05/01/2006 | 1545 |
10/13/2006 | 1605 | 10/13/2006 | 1635 |
Subject: | SGP/SMOS/E13 - 6-month Calibration Checks |
DataStreams: | sgp1smosE13.b1, sgp30smosE13.b1, sgp1440smosE13.b1 |
Description: | During the time periods specified, the SMOS.E13 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. Calibration results are available from the OMIS database at http://www.ops.sgp.arm.gov:591/smos6cal/default.htm To view all 6-month calibration reports leave the date time entry blank. |
Measurements: | sgp1440smosE13.b1:
sgp30smosE13.b1:
sgp1smosE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/20/2001 | 1813 | 04/20/2001 | 1845 |
10/04/2001 | 1920 | 10/04/2001 | 1955 |
05/16/2002 | 1842 | 05/16/2002 | 1920 |
11/14/2002 | 2008 | 11/14/2002 | 2031 |
05/01/2003 | 1901 | 05/01/2003 | 1921 |
Subject: | SGP/SMOS/E13 - 6-month Calibration Checks |
DataStreams: | sgp1smosE13.a1, sgp1smosE13.b1, sgp30smosE13.a1, sgp30smosE13.b1, sgp1440smosE13.a1 |
Description: | During the time periods specified, the SMOS.E13 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
Measurements: | sgp30smosE13.a1:
sgp1smosE13.a1:
sgp30smosE13.b1:
sgp1440smosE13.a1:
sgp1smosE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1999 | 0000 | 12/21/1999 | 2359 |
11/10/2000 | 0000 | 12/08/2000 | 2359 |
01/26/2001 | 0000 | 03/05/2001 | 2359 |
12/18/2001 | 0000 | 12/31/2001 | 2359 |
02/11/2002 | 0000 | 02/28/2002 | 2359 |
02/19/2003 | 0000 | 03/26/2003 | 2359 |
10/15/2003 | 0000 | 11/03/2003 | 2359 |
Subject: | SGP/MWR/C1 - Wet window flag "on" more frequently than expected |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
Description: | The wet window flag was set "on" more frequently than expected during the time periods specified. This indicates the heater has been running more than necessary. In most instances the moisture sensitivity was adjusted at the end of these periods. |
Measurements: | sgpmwrlosC1.b1:
sgpmwrlosC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/2003 | 1558 | 08/22/2003 | 2059 |
Subject: | SGP/MWR/C1 - spare instrument |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | The spare MWR, S.N. 04, was installed while the production instrument, S.N. 10, was returned to the manufacturer for upgrades. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2002 | 2000 | 06/28/2005 | 2300 |
Subject: | SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpqmemwrcolC1.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active as follows (BCR 456): SGP/C1 (Lamont) 4/16/2002, 2000 SGP/B1 (Hillsboro) 4/12/2002, 1600 SGP/B4 (Vici) 4/15/2002, 2300 SGP/B5 (Morris) 4/15/2002, 2300 SGP/B6 (Purcell) 4/16/2002, 2200 SGP/E14(Lamont) 4/16/2002, 0000 NSA/C1 (Barrow) 4/25/2002, 1900 NSA/C2 (Atqasuk) 4/18/2002, 1700 TWP/C1 (Manus) 5/04/2002, 0200 TWP/C2 (Nauru) 4/27/2002, 0600 TWP/C3 (Darwin) inception The MONORTM-based retrieval coefficients became active as follows (BCR 984): SGP/C1 (Lamont) 6/28/2005, 2300 SGP/B1 (Hillsboro) 6/24/2005, 2100 SGP/B4 (Vici) 6/24/2005, 2100 SGP/B5 (Morris) 6/24/2005, 2100 SGP/B6 (Purcell) 6/24/2005, 1942 SGP/E14(Lamont) 6/28/2005, 2300 NSA/C1 (Barrow) 6/29/2005, 0000 NSA/C2 (Atqasuk) 6/29/2005, 0000 TWP/C1 (Manus) 6/30/2005, 2100 TWP/C2 (Nauru) 6/30/2005, 2100 TWP/C3 (Darwin) 6/30/2005, 2100 PYE/M1 (Pt. Reyes) 4/08/2005, 1900** ** At Pt. Reyes, the original retrieval coefficients implemented in March 2005 were based on a version of the Rosenkranz model that had been modified to use the HITRAN half-width at 22 GHz and to be consistent with the water vapor continuum in MONORTM. These retrievals yield nearly identical results to the MONORTM retrievals. Therefore the Pt. Reyes data prior to 4/08/2005 may not require reprocessing. |
Measurements: | sgpmwrtipC1.a1:
sgp5mwravgC1.c1:
sgpmwrlosC1.b1:
sgp1mwravgC1.c1:
sgpqmemwrcolC1.c1:
sgpmwrlosC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/2002 | 2027 | 08/04/2005 | 1959 |
Subject: | SGP/MWR/C1 - New software version (4.15) installed |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 08/04/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
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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:
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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: | 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, DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, sgpsondeptuC1.00, DsgpsondeptuB1.00, DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, 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, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1, DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1 |
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:
DsgpsondeB5.00:
sgpsondewrpnC1.00:
sgpsondewnpnC1.a1:
DsgpsondeptuB6.00:
DsgpsondenogcptucalcB1.c1:
sgpsondewrpnB6.a0:
DsgpsondeptuC1.00:
sgpsondewnprC1.a0:
DsgpsondenogcptucalcB5.c1:
DsgpsondeptucalcC1.c1:
sgpsondewnpnB4.a1:
sgpsondeB6.00:
sgpsondewrprB4.00:
DsgpsondeptuB1.00:
DsgpsondenogcptucalcC1.c1:
sgpsondewrpnC1.a1:
sgpsondewrpnB1.a1:
sgpsondewrprC1.00:
sgpsondewrpnB1.a0:
sgpsondewrprB5.a1:
sgpsondeB5.a1:
sgpsondewrprB5.00:
DsgpsondeC1.00:
sgpsondewrprB1.a1:
sgpsondeB1.00:
sgpsondeptuC1.00:
DsgpsondenogcptucalcB4.c1:
DsgpsondeB1.a0:
DsgpsondeC1.a1:
DsgpsondeptucalcB5.c1:
sgpsondewrprB1.00:
sgpsondewrpnC1.a0:
sgpsondewrpnB1.00:
sgpsondeB1.a0:
DsgpsondeC1.a0:
DsgpsondeB4.a1:
DsgpsondeptuB4.00:
sgpsondeB1.a1:
sgpsondewrprB5.a0:
sgpsondeC1.00:
sgpsondewnpnB1.a1:
sgpsondewrpnB6.a1:
sgpsondewrprC1.a0:
sgpsondeC1.a0:
sgpsondewrprC1.a1:
DsgpsondeptuB5.00:
sgpsondewrpnB5.a0:
sgpsondewrprB4.a1:
DsgpsondeB1.a1:
sgpsondeB5.a0:
sgpsondewnpnB6.a0:
DsgpsondeB5.a1:
DsgpsondenogcwrpnB1.c1:
sgpsondewrprB1.a0:
sgpsondewrpnB5.00:
DsgpsondeB4.a0:
DsgpsondenogcwrpnB4.c1:
DsgpsondeB5.a0:
sgpsondewnpnB4.a0:
sgpsondewnprC1.a1:
sgpsondewrpnB5.a1:
sgpsondewnpnB5.a0:
DsgpsondeB4.00:
sgpsondewrpnB6.00:
sgpsondewrprB4.a0:
sgpsondewnpnB1.a0:
sgpsondeB4.a1:
sgpsondeC1.a1:
sgpsondewrpnB4.00:
DsgpsondenogcwrpnB5.c1:
sgpsondewnpnC1.a0:
sgpsondewrpnB4.a0:
DsgpsondeB1.00:
sgpsondeB4.a0:
sgpsondewnpnB6.a1:
sgpsondewrpnB4.a1:
sgpsondewnpnB5.a1:
DsgpsondeptucalcB4.c1:
DsgpsondenogcwrpnC1.c1:
sgpsondeB5.00:
DsgpsondeptucalcB1.c1:
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