Data Quality Reports for Session: 137902 User: iwilliams Completed: 11/14/2011

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
D021231.2TWP/Sonde/C1 - Bad RH ValuestwpsondewnpnC1.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
D040530.1TWP/SONDE/C1 - Bad RH sensortwpsondewnpnC1.a1, twpsondewnpnC1.b1
D070920.2TWP/SONDE/C2 - Failure of RH sensortwpsondewnpnC2.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.a1:
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
twpsondewnpnC2.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)

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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.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)

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DQRID : D021231.2
Start DateStart TimeEnd DateEnd Time
12/21/2002233612/22/20020119
Subject:
TWP/Sonde/C1 - Bad RH Values
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The RH values from the surface to approximately 11.5 km oscillate between reasonable 
values and zero.  This is apparently caused by a failure in the RH sensor heating process.  
Although the oscillation stops when the heating stops (at temperatures below ~ -45degC) I 
think the values must be viewed as suspect.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint 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.a1:
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
twpsondewnpnC2.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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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.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint 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.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint 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.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)

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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.a1:
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
twpsondewnpnC2.b1:
  • Humidity, relative(rh)
  • Dewpoint 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.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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DQRID : D070920.2
Start DateStart TimeEnd DateEnd Time
03/19/2003122103/19/20031253
08/20/2003234008/21/20030002
Subject:
TWP/SONDE/C2 - Failure of RH sensor
DataStreams:twpsondewnpnC2.b1
Description:
The RH sensor ASIC that controls the sensor heating failed.  As a result the RH at the 
beginning of the sounding oscillates between near-zero and ambient values.  The RH heating 
cycle stops when the ambient temperature reaches below -30 degC; above this level RH 
values should be valid.
Measurements:twpsondewnpnC2.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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