DQRID : D980507.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/06/1998083205/06/19980832Suspect
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Subject:
Incorrect surface pressure
DataStreams:sgpsondewrpnC1.a1
Description:
The operator transposed the digits of the surface pressure entering 976.3
instead of 967.3.  The ops log shows 967.3 for the sonde and 968.3 for
the THWAPS.  Analysis of the absolutely raw sonde data shows 968.0 at
the system-identified launch time.

Note that because the output pressure data are smoothed, under the
assumption that the surface data value is true, the first value
reported by the sonde after launch 970.4 also is incorrect.  The raw
value corresponding to the sample after launch is 966.6.

The absolute pressure values will be incorrect for the first few samples
of the sounding, as will be the ascent rates for the first 30 seconds.
The absolute altitude values also will be in error.
Suggestions: 
Measurements:sgpsondewrpnC1.a1:
  • v_wind
  • wstat
  • lat
  • base_time
  • alt
  • dp
  • tdry
  • lon
  • deg
  • asc
  • rh
  • wspd
  • u_wind
  • time_offset
  • pres
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