DQRID : D031231.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/22/2003002510/22/20030155Suspect
10/22/2003234010/23/20030121Suspect
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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.
Suggestions: 
Some data may be recovered by analysis of the raw data.  The RH also might be 

recovered (though at some degrading of the vertical resolution) by choosing only the highest RH 
values within each two-minute period of the soundings in this area.
Measurements:twpsondewnpnC2.b1:
  • rh
  • dp
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