Data Quality Reports for Session: 127595 User: martin1ste Completed: 05/07/2010

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
D081107.1NSA/MWRP/C1 - Incorrect V-band datansamwrpC1.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:
  • Dummy altitude for Zeb(alt)
  • Dry bulb temperature(tdry)
  • Surface dew point temperature(dp)
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)

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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 : D081107.1
Start DateStart TimeEnd DateEnd Time
05/28/2008220006/30/20082359
Subject:
NSA/MWRP/C1 - Incorrect V-band data
DataStreams:nsamwrpC1.b1
Description:
The V-band channels show a drift during this time.
Measurements:nsamwrpC1.b1:
  • Level of free convection pressure(levelFreeConvectionPres)
  • Lifting condensation level(liftingCondensationLevel)
  • Derived virtual temperature(virtualTemperature)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • air temperature (NGM250 predicted)(temperature)
  • Level of free convection(levelFreeConvection)
  • Retrieved water vapor density(waterVaporDensity)
  • Derived relative humidity(relativeHumidity)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Microwave brightness temperature(brightnessTemperature)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)

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