Data Quality Reports for Session: 147786 User: vghate Completed: 02/08/2013


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050105.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D050201.2TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D070313.3TWP/SONDE/C1 - Surface RH value incorrecttwpsondewnpnC1.b1


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:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D050201.2
Start DateStart TimeEnd DateEnd Time
01/07/2005233001/08/20050102
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 12km).  The RH oscillates rapidly between low (~2 %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:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D070313.3
Start DateStart TimeEnd DateEnd Time
03/08/2007000003/08/20070001
Subject:
TWP/SONDE/C1 - Surface RH value incorrect
DataStreams:twpsondewnpnC1.b1
Description:
The surface RH value of 77% when the value should have been in the low 60's.  It appears 
the observers did not allow the sonde to equilibrate to ambient conditions before 
collecting the surface data.  This error also caused the dew point to be incorrect.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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