Data Quality Reports for Session: 120447 User: roman2 Completed: 06/23/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D090114.2NSA/MWR/C1 - Incorrect brightness temperatures and retrievalsnsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1
D090417.1NSA/MWR/C1 - RFI screening testnsamwrlosC1.b1, nsamwrtipC1.a1


DQRID : D090114.2
Start DateStart TimeEnd DateEnd Time
12/09/2008000012/09/20081800
Subject:
NSA/MWR/C1 - Incorrect brightness temperatures and retrievals
DataStreams:nsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The brightness temperatures and retrieved PWV and LWP show a sudden jump and have values 
that are too high. The suddenly jump back to normal at around 1800 UTC. All other 
parameters seem reasonable so the cause of the jump may just be due to accumulation of either 
snow or melting ice on the radome.
Measurements:nsa5mwravgC1.c1:
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • MWR column precipitable water vapor(vap)
  • Averaged total liquid water along LOS path(liq)
nsamwrtipC1.a1:
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Ambient temperature(tkair)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
nsamwrlosC1.b1:
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Ambient temperature(tkair)

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DQRID : D090417.1
Start DateStart TimeEnd DateEnd Time
04/15/2009210004/15/20092300
04/16/2009171504/16/20092200
Subject:
NSA/MWR/C1 - RFI screening test
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The instrument was covered with a shield to test the effect on the RF interference that is 
affecting the measurements since February. The test was performed on 4/15 and 4/16 for a 
few hours.
Measurements:nsamwrtipC1.a1:
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • (tknd)
  • 23.8 GHz sky signal(tipsky23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Actual elevation angle(actel)
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Actual Azimuth(actaz)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • Ambient temperature(tkair)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 31.4 GHz blackbody(bb31)
  • 23.8 GHz Blackbody signal(bb23)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Blackbody kinetic temperature(tkbb)
nsamwrlosC1.b1:
  • Actual elevation angle(actel)
  • Actual Azimuth(actaz)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • (tknd)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • IR Brightness Temperature(ir_temp)
  • Ambient temperature(tkair)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Blackbody kinetic temperature(tkbb)
  • MWR column precipitable water vapor(vap)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 23.8 GHz Blackbody signal(bb23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz sky signal(sky31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Averaged total liquid water along LOS path(liq)
  • Mixer kinetic (physical) temperature(tkxc)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Temperature correction coefficient at 23.8 GHz(tc23)

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