Data Quality Reports for Session: 115506 User: perez Completed: 11/06/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D080710.2NSA/MWRP/C1 - Reprocess: LN2 calibration needednsamwrpC1.b1
D080922.2NSA/MWRP/C1 - V-band noise diode failurensamwrpC1.b1


DQRID : D080710.2
Start DateStart TimeEnd DateEnd Time
05/28/2008220007/18/20081950
Subject:
NSA/MWRP/C1 - Reprocess: LN2 calibration needed
DataStreams:nsamwrpC1.b1
Description:
The V-band measurements are incorrect. The quantities affected are the temperature and 
humidity profiles.

V-band data should not be used until the instrument is calibrated and data are 
reprocessed.

The K-band data are acceptable.
Measurements:nsamwrpC1.b1:
  • Derived relative humidity(relativeHumidity)
  • Retrieved liquid water path(liquidWaterPath)
  • Retrieved water vapor density(waterVaporDensity)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • air temperature (NGM250 predicted)(temperature)
  • Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
  • Microwave brightness temperature(brightnessTemperature)
  • Derived virtual temperature(virtualTemperature)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)

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DQRID : D080922.2
Start DateStart TimeEnd DateEnd Time
08/05/2008000010/14/20081700
Subject:
NSA/MWRP/C1 - V-band noise diode failure
DataStreams:nsamwrpC1.b1
Description:
The V-band noise diode is showing signs of instability. Starting about August 5 the 
comparison of brightness temperatures with model showed an increased divergence resulting from 
a downward trend in the brightness temperatures of frequencies > 50 GHz.

Disregard brightness temperatures and retrieved products associated with the V-band 
channels. These include all profiles. Integrated water vapor and liquid water path are not 
affected.
Measurements:nsamwrpC1.b1:
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Derived relative humidity(relativeHumidity)
  • Lifting condensation level(liftingCondensationLevel)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Level of free convection(levelFreeConvection)
  • Retrieved water vapor density(waterVaporDensity)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • air temperature (NGM250 predicted)(temperature)
  • Microwave brightness temperature(brightnessTemperature)
  • Derived virtual temperature(virtualTemperature)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)

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