Data Quality Reports for Session: 149020 User: seoung1soo Completed: 03/25/2013

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060629.1TWP/MMCR/C3 - Diminished Reflectivity SensitivitytwpmmcrmomC3.b1, twpmmcrspecmomC3.a0
D061220.35TWP/ARSCL/C3 - Reprocess: ARSCL CloudBasePrecipitation field incorrecttwparscl1clothC3.c1, twparsclcbh1clothC3.c1, twpmmcrmode1bl200511041clothC3.c1,
twpmmcrmode2ci200511041clothC3.c1, twpmmcrmode3ge200511041clothC3.c1,
twpmmcrmode4pr200511041clothC3.c1
D070112.3TWP/MMCR/C3 - Reprocess: Height ErrortwpmmcrmomC3.00, twpmmcrmomC3.b1, twpmmcrspecmomC3.a0
D070504.1TWP/ARSCL/C3 - Reprocess: MMCR Height offset affects ARSCL cloud boundariestwparscl1clothC3.c1, twparsclbnd1clothC3.c1, twpmmcrmode1bl200511041clothC3.c1,
twpmmcrmode2ci200511041clothC3.c1, twpmmcrmode3ge200511041clothC3.c1,
twpmmcrmode4pr200511041clothC3.c1


DQRID : D060629.1
Start DateStart TimeEnd DateEnd Time
12/02/2005000007/18/20062359
Subject:
TWP/MMCR/C3 - Diminished Reflectivity Sensitivity
DataStreams:twpmmcrmomC3.b1, twpmmcrspecmomC3.a0
Description:
Radar sensitivity was diminished by approximately 15 - 20 dBZ during
this period.  The result is that upper level cloud tops may be missed
and thin clouds, particularly thin cirrus, may not be detected during
this period.  Reflectivity was correctly calibrated, so values are
correct where signals were detected.  The problem was caused by
lightning damage to the low noise amplifier (LNA).  The LNA was replaced
on 20060718.
Measurements:twpmmcrmomC3.b1:
  • CalCheckLevel
  • RxGain
  • Rx290KLevel
  • MinimumDetectableReflectivity
  • RadarConstant
  • SkyNoiseLevel
  • RangeCorrectedPower
  • Cloud, reflectivity, at altitude(Reflectivity)
twpmmcrspecmomC3.a0:
  • RxGain
  • CalCheckLevel
  • Rx290KLevel
  • SkyNoiseLevel
  • MinimumDetectableReflectivity
  • CalibrationConstant
  • RadarConstant

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DQRID : D061220.35
Start DateStart TimeEnd DateEnd Time
11/04/2005000003/31/20062359
Subject:
TWP/ARSCL/C3 - Reprocess: ARSCL CloudBasePrecipitation field incorrect
DataStreams:twparscl1clothC3.c1, twparsclcbh1clothC3.c1, twpmmcrmode1bl200511041clothC3.c1,
twpmmcrmode2ci200511041clothC3.c1, twpmmcrmode3ge200511041clothC3.c1,
twpmmcrmode4pr200511041clothC3.c1
Description:
The CloudBasePrecipitation field is incorrect and has no physical meaning.  An ARSCL 
processing error occurred when the smet60s data stream format changed, causing the wrong data 
field to be used to supply precipitation measurements to the ARSCL VAP.  The error caused 
no significant degradation in other ARSCL fields, since manual quality control corrected 
any related errors.
Measurements:twparscl1clothC3.c1:
  • CloudBasePrecipitation
twparsclcbh1clothC3.c1:
  • CloudBasePrecipitation
twpmmcrmode3ge200511041clothC3.c1:
  • CloudBasePrecipitation
twpmmcrmode1bl200511041clothC3.c1:
  • CloudBasePrecipitation
twpmmcrmode2ci200511041clothC3.c1:
  • CloudBasePrecipitation
twpmmcrmode4pr200511041clothC3.c1:
  • CloudBasePrecipitation

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DQRID : D070112.3
Start DateStart TimeEnd DateEnd Time
11/04/2005050001/10/20072000
Subject:
TWP/MMCR/C3 - Reprocess:   Height Error
DataStreams:twpmmcrmomC3.00, twpmmcrmomC3.b1, twpmmcrspecmomC3.a0
Description:
A timing error was found in the PIRAQ MMCR's.  It resulted in recorded heights being too 
high for each radar mode by the following amounts: 
   Mode 1: 24.8756 m too high
   Mode 2: 25.6249 m too high
   Mode 3: 33.1176 m too high
   Mode 4: 33.1176 m too high
Range gate spacing was not affected.
Measurements:twpmmcrmomC3.b1:
  • heights
twpmmcrspecmomC3.a0:
  • Heights
twpmmcrmomC3.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)

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DQRID : D070504.1
Start DateStart TimeEnd DateEnd Time
11/04/2005000005/31/20062359
Subject:
TWP/ARSCL/C3 - Reprocess: MMCR Height offset affects ARSCL cloud boundaries
DataStreams:twparscl1clothC3.c1, twparsclbnd1clothC3.c1, twpmmcrmode1bl200511041clothC3.c1,
twpmmcrmode2ci200511041clothC3.c1, twpmmcrmode3ge200511041clothC3.c1,
twpmmcrmode4pr200511041clothC3.c1
Description:
MMCR heights were recorded as being too high by the following amounts:
   Mode 1: 24.8756 m too high
   Mode 2: 25.6249 m too high
   Mode 3: 33.1176 m too high
   Mode 4: 33.1176 m too high

These errors may affect cloud boundaries that are determined by combining MMCR and MPL 
measurements;  radar moments heights will be off by these amounts also.

NOTE: reprocessing is underway.  20060101-20060228 have been reprocessed and archived.  
These data cover the period of TWP-ICE.
Measurements:twparscl1clothC3.c1:
  • CloudLayerBottomHeightMplCloth
  • CloudLayerTopHeightMplCloth
  • CloudLayerTopHeightMplCamp
  • CloudLayerBottomHeightMplCamp
  • Heights
twparsclbnd1clothC3.c1:
  • CloudLayerBottomHeightMplCamp
  • CloudLayerTopHeightMplCamp
  • CloudLayerTopHeightMplCloth
  • CloudLayerBottomHeightMplCloth
twpmmcrmode3ge200511041clothC3.c1:
  • Heights
twpmmcrmode1bl200511041clothC3.c1:
  • Heights
twpmmcrmode2ci200511041clothC3.c1:
  • Heights
twpmmcrmode4pr200511041clothC3.c1:
  • Heights

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