Data Quality Reports for Session: 138448 User: aeround Completed: 10/31/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D090522.1GRW/MWR/M1 - Loose mirrorgrwmwrlosM1.b1, grwmwrtipM1.a1
D100224.6GRW/MWR/M1 - Reprocess: Biased LWP retrievals-Updated retrieval coefficientsgrwmwrlosM1.b1, grwmwrtipM1.a1
D100326.2GRW/MWR/M1 - Incorrect ambient temperaturegrwmwrlosM1.b1, grwmwrtipM1.a1
D100716.1GRW/MWR/M1 - Incorrect instrument computer set-upgrwmwrlosM1.b1, grwmwrtipM1.a1
D100830.1GRW/MWR/M1 - Erratic brightness temperaturegrwmwrlosM1.b1, grwmwrtipM1.a1
D100830.3GRW/MWR/M1 - Missing datagrwmwrlosM1.b1, grwmwrtipM1.a1


DQRID : D090522.1
Start DateStart TimeEnd DateEnd Time
05/01/2009000006/16/20090745
Subject:
GRW/MWR/M1 - Loose mirror
DataStreams:grwmwrlosM1.b1, grwmwrtipM1.a1
Description:
The data from the MWR were suspicious and became progressively worse. The problem was 
traced back to the fact that the screw that keeps the mirror in place had become loose and 
the mirror was freely rotating. 

The mirror was tightened on 6/9/2009, however the measurements were noisy until 6/16, when 
the instrument was rebooted and all the connections checked. 

Measurements between 5/1 and 6/9 should not be used. Data between 6/9 and 6/16 are usable, 
although they are very noisy.
Measurements:grwmwrtipM1.a1:
  • vaptip
  • bb31
  • tbsky23tip
  • bbn23
  • bbn31
  • tbsky31tip
  • tipsky23
  • bb23
  • tipsky31
  • liqtip
grwmwrlosM1.b1:
  • sky23
  • bbn23
  • Total water vapor along LOS path(vap)
  • bbn31
  • Total liquid water along LOS path(liq)
  • sky31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • bb31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • bb23

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DQRID : D100224.6
Start DateStart TimeEnd DateEnd Time
05/01/2009000003/31/20101700
Subject:
GRW/MWR/M1 - Reprocess: Biased LWP retrievals-Updated retrieval coefficients
DataStreams:grwmwrlosM1.b1, grwmwrtipM1.a1
Description:
Retrieval coefficients were updated to screen for some bad soundings
Measurements:grwmwrtipM1.a1:
  • liqtip
grwmwrlosM1.b1:
  • Total liquid water along LOS path(liq)

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DQRID : D100326.2
Start DateStart TimeEnd DateEnd Time
02/09/2010104802/11/20101045
Subject:
GRW/MWR/M1 - Incorrect ambient temperature
DataStreams:grwmwrlosM1.b1, grwmwrtipM1.a1
Description:
The ambient temperature readings are incorrect.  Problem appeared to have started around 
10:48 GMT on 02/09, but was not really noticeable until slightly after 11 GMT, when tkair 
values dipped considerably.  

The dewblower was replaced on 2/11 and temperature readings returned to normal.
Measurements:grwmwrtipM1.a1:
  • tkair
grwmwrlosM1.b1:
  • tkair

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DQRID : D100716.1
Start DateStart TimeEnd DateEnd Time
07/11/2010180008/09/20101400
Subject:
GRW/MWR/M1 - Incorrect instrument computer set-up
DataStreams:grwmwrlosM1.b1, grwmwrtipM1.a1
Description:
Starting late on 07/11 the instrument began to have very brief (< 1 min) data outages 
every few hours.  By 07/12 data had become noticeably incorrect, particularly the PWV, LWP, 
TB23, and TB31.  At ~17 Z on 0713 the missing data / no data available flags became more 
frequent.

The problem was identified as improper settings of the instrument computer and was solved 
on 8/9.
Measurements:grwmwrtipM1.a1:
  • tnd_nom31
  • vaptip
  • tnd31I
  • r23
  • tc23
  • tbsky23tip
  • tnd_nom23
  • tbsky31tip
  • tc31
  • tnd23I
  • r31
  • tnd31
  • tnd23
  • liqtip
grwmwrlosM1.b1:
  • Total water vapor along LOS path(vap)
  • tnd31
  • Total liquid water along LOS path(liq)
  • tnd23
  • tnd_nom31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd_nom23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tc23
  • tc31

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DQRID : D100830.1
Start DateStart TimeEnd DateEnd Time
07/20/2010120008/09/20101400
Subject:
GRW/MWR/M1 - Erratic brightness temperature
DataStreams:grwmwrlosM1.b1, grwmwrtipM1.a1
Description:
Around 12 Z on 7/20 both the PWV and 23.8 GHz brightness temp values began to diverge from 
those of the MWRP. By 7/22 both the LWP and 31.4 GHz brightness temp had followed suit. 
At 0600 Z on 7/22 multiple (10-20), brief (<=1 min) data outages began appearing hourly.  
The problem persisted intermittently until 8/9.

On 8/9, changes in the settings of the computer restored the proper functionality of the 
MWR software.
Measurements:grwmwrtipM1.a1:
  • tnd_nom31
  • vaptip
  • tnd31I
  • tc23
  • tbsky23tip
  • tnd_nom23
  • tbsky31tip
  • tc31
  • tnd23I
  • tnd31
  • tnd23
  • liqtip
grwmwrlosM1.b1:
  • Total water vapor along LOS path(vap)
  • tnd31
  • Total liquid water along LOS path(liq)
  • tnd23
  • tnd_nom31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd_nom23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tc23
  • tc31

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DQRID : D100830.3
Start DateStart TimeEnd DateEnd Time
07/04/2010160007/06/20101400
Subject:
GRW/MWR/M1 - Missing data
DataStreams:grwmwrlosM1.b1, grwmwrtipM1.a1
Description:
Data are missing and unrecoverable.
Measurements:grwmwrtipM1.a1:
  • vaptip
  • tc23
  • bbn23
  • wet_window
  • tnd_nom23
  • tbsky31tip
  • time
  • tipsky31
  • actel
  • bb31
  • tbsky23tip
  • tc31
  • r31
  • tnd31
  • tipsky23
  • bb23
  • tkbb
  • tkxc
  • time_offset
  • tknd
  • r23
  • actaz
  • base_time
  • tnd23
  • tkair
  • alt
  • lat
  • tnd_nom31
  • tnd31I
  • bbn31
  • tnd23I
  • lon
  • liqtip
grwmwrlosM1.b1:
  • IR Brightness Temperature(sky_ir_temp)
  • tnd31
  • bbn31
  • lon
  • time
  • bb23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tc23
  • base_time
  • alt
  • tkbb
  • sky31
  • bb31
  • tc31
  • sky23
  • wet_window
  • tknd
  • Total liquid water along LOS path(liq)
  • tnd_nom31
  • tkxc
  • tkair
  • tnd_nom23
  • bbn23
  • Total water vapor along LOS path(vap)
  • tnd23
  • lat
  • 31.4 GHz sky brightness temperature(tbsky31)
  • time_offset

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