Data Quality Reports for Session: 101333 User: kmbedka Completed: 08/28/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D021206.1TWP/SONDE/C2 - Broken Temperature SensortwpsondewnpnC2.a1, twpsondewnpnC2.b1
D021229.1TWP/SONDE/C1 - Broken Temperature SensortwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030419.1TWP/SONDE/C2 - Bad RH Data (AIRS Validation Sonde)twpsondewnpnC2.a1, twpsondewnpnC2.b1
D030427.2TWP/SONDE/C1 - Questionable RHtwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030503.1TWP/SONDE/C1 - Bad RHtwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030603.3TWP/SONDE/C1 - Broken temperature sensortwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030608.4TWP/SONDE/C2 - Failure of RH sensortwpsondewnpnC2.a1, twpsondewnpnC2.b1
D031008.1TWP/SONDE/C2 - Strange problem with data -twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.b1
D031231.1TWP/SONDE/C2 - RH sensor badtwpsondewnpnC2.b1
D040127.3TWP/SONDE/C2 - Broken temperature sensorstwpsondewnpnC2.b1
D040208.2TWP/SONDE/C2 - Questionable rH datatwpsondewnpnC2.b1
D040219.4TWP/SONDE/C2 - Bad RH sensortwpsondewnpnC2.b1
D040228.1TWP/SONDE/C1 - Broken temperature sensortwpsondewnpnC1.b1
D040228.3TWP/SONDE/C1 - Bad RH sensorstwpsondewnpnC1.b1
D040425.1TWP/SONDE/C2 - Bad RH values alofttwpsondewnpnC2.b1
D040530.1TWP/SONDE/C1 - Bad RH sensortwpsondewnpnC1.a1, twpsondewnpnC1.b1
D040606.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D040627.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D040627.2TWP/SONDE/C1 - Bad RH in short interval alofttwpsondewnpnC1.b1
D040711.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D040711.2TWP/SONDE/C2 - RH sensor failure near surfacetwpsondewnpnC2.b1
D040815.1TWP/SONDE/C2 - Operator used wrong calibration tapetwpsondewnpnC2.b1
D040921.1TWP/SONDE/C2 - RH sensor failure below 9kmtwpsondewnpnC2.b1
D040921.2TWP/SONDE/C2 - Bad RH values alofttwpsondewnpnC2.b1
D041011.3TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D050105.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1


DQRID : D021206.1
Start DateStart TimeEnd DateEnd Time
09/18/2002113709/18/20021301
09/24/2002012909/24/20020204
09/24/2002022009/24/20020352
11/23/2002233011/24/20020108
11/25/2002233711/26/20020001
12/16/2002113812/16/20021248
12/22/2002013612/22/20020204
12/24/2002233112/25/20020112
12/27/2002234412/28/20020131
03/28/2003021403/28/20030339
04/22/2003234104/23/20030122
04/23/2003112904/23/20031308
04/24/2003235804/25/20030126
06/02/2003113406/02/20031321
06/06/2003233506/07/20030057
06/09/2003234006/10/20030116
06/11/2003234506/12/20030112
06/14/2003113306/14/20031300
06/26/2003233506/27/20030114
09/27/2003232709/28/20030132
Subject:
TWP/SONDE/C2  - Broken Temperature Sensor
DataStreams:twpsondewnpnC2.a1, twpsondewnpnC2.b1
Description:
The temperature sensors on these radiosondes broke at launch.  All
the temperature-related data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)

twpsondewnpnC2.a1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D021229.1
Start DateStart TimeEnd DateEnd Time
09/18/2002233409/19/20020111
09/21/2002233009/22/20020059
10/01/2002234910/02/20020117
10/13/2002113910/13/20021303
10/18/2002235810/19/20020113
05/23/2003233005/24/20030135
06/14/2003233006/15/20030147
06/22/2003115906/22/20031332
06/22/2003234906/23/20030110
06/23/2003114606/23/20031323
06/25/2003234206/26/20030118
06/28/2003233006/29/20030056
06/29/2003113406/29/20031312
Subject:
TWP/SONDE/C1  - Broken Temperature Sensor
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The temperature sensor on these radiosondes broke after launch.
All the temperature related data are incorrect.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)

twpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D030419.1
Start DateStart TimeEnd DateEnd Time
04/13/2003012404/13/20030200
Subject:
TWP/SONDE/C2 - Bad RH Data (AIRS Validation Sonde)
DataStreams:twpsondewnpnC2.a1, twpsondewnpnC2.b1
Description:
The RH sensor heating circuit failed on this sonde.  This results in
oscillation of reported RH between reasonable values and values near zero.
This was an AIRS validation sounding.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

twpsondewnpnC2.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D030427.2
Start DateStart TimeEnd DateEnd Time
04/08/2003234704/09/20030003
Subject:
TWP/SONDE/C1 - Questionable RH
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 5km and 10km).  The RH oscillates rapidly between low (~5 %RH) and 
not so low (~50 %RH) and the oscillation seems to stop when the temperature is below ~35 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

twpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D030503.1
Start DateStart TimeEnd DateEnd Time
04/29/2003112304/29/20031205
Subject:
TWP/SONDE/C1 - Bad RH
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The RH sensor heating circuit failed on this radiosonde.  The RH-related values obtained 
between 0 and 10000 meters oscillate between near-zero and reasonable ambient values.  
Above 10000 the RH values are likely correct.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

twpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D030603.3
Start DateStart TimeEnd DateEnd Time
05/23/2003233005/24/20030135
Subject:
TWP/SONDE/C1 - Broken temperature sensor
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)

twpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D030608.4
Start DateStart TimeEnd DateEnd Time
06/03/2003233906/04/20030016
Subject:
TWP/SONDE/C2  - Failure of RH sensor
DataStreams:twpsondewnpnC2.a1, twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below ~35 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

twpsondewnpnC2.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D031008.1
Start DateStart TimeEnd DateEnd Time
10/02/2003023210/02/20030300
Subject:
TWP/SONDE/C2 - Strange problem with data -
DataStreams:twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.b1
Description:
This is very strange.  The data has what appears to be a pressure jump at launch (from 
1007.2 to 956.5 hPa) but the sounding temperature and RH data clearly look to be 
interpolated between the surface and tropopause.  By examining the absolutely raw data, I found that 
the system assigned an elapsed time of 408 seconds (since system start up) to the launch 
point, but there is no raw data between 410 and 532 seconds.  The raw pressure value at 
410 seconds is 1007.6 hPa and that at 532 seconds is 40.9 hPa!  Unless this sounding was 
done by using a rocket-powered balloon (maybe even then), it would be impossible for the 
sonde to get to 40.9 hPa in 2 minutes.  Because the apparent gap is only two minutes, the 
system was able to interpolate but is not sophisticated enough to understand that the 
limits of the interpolation are unreasonable.

I can't imagine what went wrong - I've not seen anything like this before.
Measurements:twpsondeC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpsondewnpnC2.b1:
  • Dry-Bulb Temperature(tdry)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • north latitude for all the input platforms.(lat)
  • Wind Status(wstat)
  • surface wind speed(wspd)
  • model meridional wind velocity(v_wind)
  • pressure at constant pressure surface(pres)
  • Time offset of tweaks from base_time(time_offset)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • model zonal wind velocity(u_wind)
  • Wind Direction(deg)
  • altitude above sea levelaltunits(alt)

twpsondewnpnC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D031231.1
Start DateStart TimeEnd DateEnd Time
10/22/2003002510/22/20030155
10/22/2003234010/23/20030121
Subject:
TWP/SONDE/C2 - RH sensor bad
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuits failed during these
soundings.  The RH oscillates rapidly between low (~0 %RH) and not
so low (ambient %RH) and the oscillation seems to stop when the
temperature is below ~35 degC.  According to Vaisala these are
symptoms of failure in the ASIC (application specific integrated
circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040127.3
Start DateStart TimeEnd DateEnd Time
10/13/2003004010/13/20030203
11/08/2003233511/09/20030215
11/18/2003120511/18/20031340
11/19/2003115611/19/20031346
11/21/2003004411/21/20030113
12/20/2003122512/20/20031408
12/21/2003005612/21/20030126
12/21/2003115512/21/20031344
12/23/2003004212/23/20030212
12/23/2003113712/23/20031259
12/23/2003234212/24/20030132
01/08/2004113501/08/20041309
01/09/2004115701/09/20041342
01/09/2004135901/09/20041537
01/12/2004234201/13/20040214
01/16/2004140901/16/20041548
01/16/2004233701/17/20040109
01/18/2004113501/18/20041256
01/19/2004022301/19/20040346
01/19/2004232901/20/20040157
01/21/2004125201/21/20041400
01/22/2004005201/22/20040227
01/23/2004113701/23/20041319
01/26/2004120201/26/20040146
02/17/2004140602/17/20041536
02/26/2004122102/26/20041350
03/09/2004114503/09/20041315
03/14/2004113103/14/20041300
03/22/2004113403/22/20041300
03/29/2004233203/30/20040047
03/30/2004233403/31/20040059
04/11/2004234804/12/20040120
05/01/2004233505/02/20040110
05/02/2004233605/03/20040109
05/13/2004233405/14/20040112
05/14/2004140605/14/20041411
06/07/2004022406/07/20040351
06/25/2004114606/25/20041328
07/02/2004005907/02/20040217
07/20/2004022007/20/20040358
07/24/2004123507/24/20041355
08/22/2004114408/22/20041207
09/08/2004142509/08/20041605
09/08/2004233809/08/20042345
10/18/2004234610/19/20040128
11/29/2004232111/30/20040105
12/08/2004114312/08/20041306
12/30/2004113012/30/20041239
Subject:
TWP/SONDE/C2 - Broken temperature sensors
DataStreams:twpsondewnpnC2.b1
Description:
The temperature sensors on these radiosondes broke after launch.  All
temperature-related data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D040208.2
Start DateStart TimeEnd DateEnd Time
02/04/2004114702/04/20041337
Subject:
TWP/SONDE/C2  - Questionable rH data
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below ~35 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040219.4
Start DateStart TimeEnd DateEnd Time
02/18/2004003502/18/20040205
Subject:
TWP/SONDE/C2  - Bad RH sensor
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below ~35 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040228.1
Start DateStart TimeEnd DateEnd Time
02/07/2004234202/08/20040115
02/09/2004113302/09/20041233
04/05/2004233204/06/20040105
04/22/2004115604/22/20041317
04/24/2004113004/24/20041312
04/29/2004113704/29/20041312
04/30/2004233605/01/20040112
05/03/2004233105/04/20040105
05/05/2004113505/05/20041319
05/07/2004113205/07/20041315
05/11/2004114205/11/20041311
05/12/2004114505/12/20041206
05/18/2004113005/18/20041321
07/10/2004113007/11/20041255
07/13/2004113907/13/20041320
07/16/2004234607/17/20040107
07/22/2004235507/23/20040140
07/26/2004234107/27/20040115
08/14/2004233008/15/20040104
08/22/2004233508/23/20040105
09/05/2004234009/06/20040119
09/14/2004232809/14/20042329
09/17/2004233209/18/20040102
10/28/2004233610/29/20040057
11/28/2004235211/29/20040044
Subject:
TWP/SONDE/C1 - Broken temperature sensor
DataStreams:twpsondewnpnC1.b1
Description:
The temperature sensor on these radiosondes broke after launch
All the temperature-related data are incorrect.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)


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DQRID : D040228.3
Start DateStart TimeEnd DateEnd Time
02/06/2004234102/06/20040130
Subject:
TWP/SONDE/C1 - Bad RH sensors
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 12km).  The RH oscillates rapidly in a 20% range and the 
oscillation seems to stop when the temperature is below ~45 degC.  These are symptoms of 
failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D040425.1
Start DateStart TimeEnd DateEnd Time
04/21/2004123204/21/20041248
Subject:
TWP/SONDE/C2 - Bad RH values aloft
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit on this sonde failed about 24 minutes into 
the flight.  The RH values look reasonable, though somewhat noisy, from the surface to 
approximately 6.9 km (439 hPa) at which point they begin to oscillate between 0 and 100 %.  
This behavior stops when the sonde reaches approximately 11.5km (232 hPa) when the air 
temperature drops below -40 degC.  The oscillation stops at that point, though the RH 
remains higher than might be expected even under supersaturated conditions.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040530.1
Start DateStart TimeEnd DateEnd Time
05/28/2003233005/29/20030010
Subject:
TWP/SONDE/C1 - Bad RH sensor
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between the surface and 11km).  The RH oscillates rapidly between low (~0 
%RH) and high (~80 %RH) and the oscillation seems to stop when the temperature is below 
~40 degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

twpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040606.1
Start DateStart TimeEnd DateEnd Time
06/03/2004113206/03/20041212
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~15 %RH) and 
not so low (~50 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D040627.1
Start DateStart TimeEnd DateEnd Time
06/04/2004001006/23/20042330
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~0 %RH) and 
not so low (~80 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D040627.2
Start DateStart TimeEnd DateEnd Time
06/21/2004001006/21/20040011
Subject:
TWP/SONDE/C1  - Bad RH in short interval aloft
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit on this sonde failed about 31 minutes into 
the flight.  The RH values look reasonable from the surface to approximately 8.25 km at 
which point they begin to oscillate between 0 and 40%.  This behavior stops when the sonde 
reaches approximately 11.0km when the air temperature drops below -40 degC.  The 
oscillation stops at that point, though the RH remains higher than might be expected even under 
supersaturated conditions.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D040711.1
Start DateStart TimeEnd DateEnd Time
06/30/2004113006/30/20041204
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~2 %RH) and 
not so low (~90 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D040711.2
Start DateStart TimeEnd DateEnd Time
07/10/2004123807/10/20041315
Subject:
TWP/SONDE/C2  - RH sensor failure near surface
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below ~35 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040815.1
Start DateStart TimeEnd DateEnd Time
08/12/2004004408/12/20040233
Subject:
TWP/SONDE/C2 - Operator used wrong calibration tape
DataStreams:twpsondewnpnC2.b1
Description:
It appears as though the opperator used the wrong calibration tape for this sounding.  The 
primary symptom is a jump in temperature from a surface value of 30.1 degC to the first 
value aloft of 61.0 degC.  Secondly, the recorded serial number for this sounding is 
Z1430179 which is the same serial number recorded for the previous sounding.

This problem points to three failures of procedure (I have notified TWP site ops by 
e-mail).  The first failure is using the wrong tape. The second failure is not checking the 
radiosonde values before launch which relates to the third failure of not entering the 
radiosonde values as the surface values of the sounding.
Measurements:twpsondewnpnC2.b1:
  • Dry-Bulb Temperature(tdry)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • north latitude for all the input platforms.(lat)
  • Wind Status(wstat)
  • surface wind speed(wspd)
  • model meridional wind velocity(v_wind)
  • pressure at constant pressure surface(pres)
  • Time offset of tweaks from base_time(time_offset)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • model zonal wind velocity(u_wind)
  • Wind Direction(deg)
  • altitude above sea levelaltunits(alt)


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DQRID : D040921.1
Start DateStart TimeEnd DateEnd Time
09/16/2004113509/16/20041210
Subject:
TWP/SONDE/C2  - RH sensor failure below 9km
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below ~35 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D040921.2
Start DateStart TimeEnd DateEnd Time
09/17/2004114509/17/20041216
09/18/2004005809/18/20040133
09/19/2004140809/19/20041447
Subject:
TWP/SONDE/C2 - Bad RH values aloft
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit on these sondes failed after launch but 
resume proper operation when the ambient temperature dropped below ~40 degC.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D041011.3
Start DateStart TimeEnd DateEnd Time
10/08/2004113110/08/20041200
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~1 %RH) and 
high (~80 %RH).  According to Vaisala these are symptoms of failure in the ASIC 
(application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D050105.1
Start DateStart TimeEnd DateEnd Time
12/30/2004233012/31/20040108
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~5 %RH) and 
not so low (~70 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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