Data Quality Reports for Session: 123061 User: jean1charl Completed: 09/23/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050201.2TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1


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:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

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