Data Quality Reports for Session: 101546 User: anfrench Completed: 09/12/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020611.2SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etcsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020626.34SGP/SONDE/C1 - Incorrect Surface PressuresgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020626.35SGP/SONDE/C1 - Bad Temperature SensorsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020703.1SGP/SONDE/C1 - Temperature sensor failuresgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1


DQRID : D020611.2
Start DateStart TimeEnd DateEnd Time
06/09/2002022906/09/20020236
Subject:
SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etc
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature and RH for this sounding look bad, either because of
interference from another sonde or because the temperature sensor was
broken on launch.  The sounding terminated early in any event.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • altitude above sea levelaltunits(alt)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Surface dew point temperature(dp)
sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)

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DQRID : D020626.34
Start DateStart TimeEnd DateEnd Time
06/17/2002112806/17/20021313
Subject:
SGP/SONDE/C1 - Incorrect Surface Pressure
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the operator made a typographical error when entering the
surface pressure.  The file has 987.0 hPa and it probably should be 978.0
which would be consistent with the first sample provided by the radiosonde
(977.3 hPa), the surface pressures recorded for the adjacent soundings, and
the THWAPS pressure.

Because the sounding altitude is calculated assuming the surface pressure
is correct, the altitude values for the entire flight and the ascent rate 
values for the first 30 seconds of the sounding will be incorrect.
Measurements:sgpsondewnpnC1.a1:
  • altitude above sea levelaltunits(alt)
  • Ascent Rate(asc)
sgpsondewnpnC1.b1:
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)

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DQRID : D020626.35
Start DateStart TimeEnd DateEnd Time
06/19/2002232906/20/20020036
Subject:
SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the temperature sensor broke shortly after launch.  As a
result, the temperature and dewpoint values are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)
sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)

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DQRID : D020703.1
Start DateStart TimeEnd DateEnd Time
06/27/2002172806/27/20021908
Subject:
SGP/SONDE/C1 - Temperature sensor failure
DataStreams:sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
Temperature sensor broke at launch.  All temperature-related variables
are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)
sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
sgpqmemwrcolC1.c1:
  • Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)
  • Integrated vapor column from sonde using a direct calculation (external from the
    IPM)(integ_vap_sonde_direct)

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