Data Quality Reports for Session: 115532 User: maria Completed: 11/06/2008


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060928.4NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrynsasondewnpnC1.b1
D080512.1NSA/MWR/C1 - Spikes in air temperature readingsnsamwrlosC1.b1, nsamwrtipC1.a1
D080623.1NSA/MWR/C1 - Missing surface air temperature datansamwrlosC1.b1, nsamwrtipC1.a1
D080710.2NSA/MWRP/C1 - Reprocess: LN2 calibration needednsamwrpC1.b1


DQRID : D060928.4
Start DateStart TimeEnd DateEnd Time
09/29/2006050012/31/99992359
Subject:
NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:nsasondewnpnC1.b1
Description:
The output precision of the following variables was increased 20060929:

   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:nsasondewnpnC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Dummy altitude for Zeb(alt)
  • Retrieved pressure profile(pres)
  • Surface dew point temperature(dp)


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DQRID : D080512.1
Start DateStart TimeEnd DateEnd Time
04/02/2008000006/04/20082200
Subject:
NSA/MWR/C1 - Spikes in air temperature readings
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
During this month there are occasional negative spikes in the Tkair variable. The problem 
may be corrosion in the temperature sensor or the infiltration of water from melting snow.
The dewblower was replaced and a new sensor installed
Measurements:nsamwrlosC1.b1:
  • Ambient temperature(tkair)

nsamwrtipC1.a1:
  • Ambient temperature(tkair)


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DQRID : D080623.1
Start DateStart TimeEnd DateEnd Time
04/06/2008220006/20/20080200
Subject:
NSA/MWR/C1 - Missing surface air temperature data
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Some wires in the dewblower were not correctly configured.
Measurements:nsamwrlosC1.b1:
  • Ambient temperature(tkair)

nsamwrtipC1.a1:
  • Ambient temperature(tkair)


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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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