DQRID : D970710.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/29/1996052704/29/19960527Suspect
more
Subject:
Questionable pressure/altitude data
DataStreams:sgpsondewrpnC1.a1
Description:
Ric Cederwall noticed that the lowest 85 samples of this sounding have
nearly constant values of temperature and relative humidity.  It appears
that the system may have mis-identified the launch start time in a way
that resulted in the system using interpolated values of pressure even
though the sonde was still on the ground.  This may have been caused by
a damaged pressure sensor.  I will examine the absolutely raw data to
try and understand this further, but I think it is reasonable to assume
that the first 85 samples or so are incorrect and representative of
condidtions at the surface and that the pressure sensor was damaged
during this sounding.  I will request the raw data from the archive
today.
Suggestions: 
Measurements:sgpsondewrpnC1.a1:
  • v_wind
  • wstat
  • lat
  • base_time
  • alt
  • dp
  • tdry
  • lon
  • deg
  • asc
  • rh
  • wspd
  • u_wind
  • time_offset
  • pres
more

Close this window