Data Quality Reports for Session: 125029 User: roman2 Completed: 01/03/2010


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060928.4NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrynsasondewnpnC1.b1
D090417.5NSA/MWR/C1 - High noise in 23.8-GHz channelnsamwrlosC1.b1, nsamwrtipC1.a1


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 : D090417.5
Start DateStart TimeEnd DateEnd Time
02/13/2009000010/15/20091800
Subject:
NSA/MWR/C1 - High noise in 23.8-GHz channel
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Starting approximately on February 13 the MWR experienced high level of noise in the 23.8 
GHz channel. The spikes became more prominent around Feb 17 and increased after that date 
as well. The cause of the interference was identified as the nearby MWRP on Oct 13 and 
the instruments were realigned.
Measurements:nsamwrtipC1.a1:
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 23.8 GHz sky signal(tipsky23)

nsamwrlosC1.b1:
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz sky signal(sky23)


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