Data Quality Reports for Session: 120079 User: saraht Completed: 06/08/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020909.1SGP/SONDE/C1 - Bad Temperature SensorsgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020909.2SGP/SONDE/C1 - Bad Temperature SensorsgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D060928.3SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrysgpsondewnpnC1.b1


DQRID : D020909.1
Start DateStart TimeEnd DateEnd Time
09/06/2002172709/06/20021854
Subject:
SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the temperature sensor broke upon launch and therefore the reported 
temperature is approximately 40 degC too low.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)
sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
sgpqmemwrcolC1.c1:
  • Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)
sgplssondeC1.c1:
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)

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DQRID : D020909.2
Start DateStart TimeEnd DateEnd Time
09/06/2002052709/06/20020718
Subject:
SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the temperature sensor broke shortly after launch. Temperatures are offset 
by approxmiately (but not constantly) 40 degC.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)
sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
sgpqmemwrcolC1.c1:
  • Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)
sgplssondeC1.c1:
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)

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DQRID : D060928.3
Start DateStart TimeEnd DateEnd Time
09/28/2006172812/31/99992359
Subject:
SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:sgpsondewnpnC1.b1
Description:
The output precision of the following variables was increased 20060928

alt  changed from 1m to 0.1m
dp   changed from 0.1degC to 0.01degC
pres changed from 0.1 hPa to 0.01 hPa
RH   changed from 1%RH to 0.01%RH
tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase in accuracy.  
Users are cautioned to continue to use their best scientific judgement when using these or 
any other data.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Dummy altitude for Zeb(alt)

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