Data Quality Reports for Session: 135945 User: aeround Completed: 07/08/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020927.1SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivitiessgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1
D050222.2SGP/MMCR/C1 - Power supply failuresgpmmcrmomC1.00, sgpmmcrmomC1.b1, sgparscl1clothC1.c1, sgpmmcrspectraC1.a0,
sgparsclbnd1clothC1.c1


DQRID : D020927.1
Start DateStart TimeEnd DateEnd Time
12/01/1996000002/04/20002359
Subject:
SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities
DataStreams:sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1
Description:
Prior to February 4, 2000, the ARSCL data set incorporated data from the
Beaufort Laser Ceilometer as one of its inputs.  Because of the BLC's
high spatial resolution, this data was often chosen by ARSCL as the
"CloudBaseBestEstimate" for boundary layer clouds. It was subsequently
determined that the BLC cloud base was biased, with the BLC reporting
cloud base heights that are 122 meters too high.

The bias error will be corrected when the entire ARSCL data set is
reprocessed as part of release_4.  (The release version number is included
the the netCDF global comments).   This reprocessing will also include a
small correction the the MMCR near-field reflectivities.  This correction
is less than 1 dB except for hydrometers within 200 meters of the surface.

Thanks to Roger Marchand for helping bracket this problem.
Measurements:sgparsclbnd1clothC1.c1:
  • LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
sgparscl1clothC1.c1:
  • BLC/VCEIL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseCeilometerCloth)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • BLC/VCEIL Standard Algorithm Cloud Base Height(CloudBaseCeilometerStd)
  • LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
sgparsclcbh1clothC1.c1:
  • BLC/VCEIL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseCeilometerCloth)
  • BLC/VCEIL Standard Algorithm Cloud Base Height(CloudBaseCeilometerStd)

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DQRID : D050222.2
Start DateStart TimeEnd DateEnd Time
01/16/2005003002/11/20052115
Subject:
SGP/MMCR/C1 - Power supply failure
DataStreams:sgpmmcrmomC1.00, sgpmmcrmomC1.b1, sgparscl1clothC1.c1, sgpmmcrspectraC1.a0,
sgparsclbnd1clothC1.c1
Description:
A power supply failed in the MMCR's receiver.  During the period of this DQR, the radar 
would appear to work but the calibration is probably incoorect during good portions of this 
time.  The power supply was replaced and normal operation resumed at 2115 on 02/11/2005.
Measurements:sgparsclbnd1clothC1.c1:
  • LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
  • CloudLayerBottomHeightMplCloth
  • CloudLayerBottomHeightMplCamp
  • time_offset
  • CloudLayerTopHeightMplCloth
  • CloudLayerTopHeightMplCamp
  • base_time
sgparscl1clothC1.c1:
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)
  • SignaltoNoiseRatio
  • LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
  • base_time
  • CloudBasePrecipitation
  • ModeId
  • MPL Scott Algorithm Cloud Base Height(CloudBaseMplScott)
  • BLC/VCEIL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseCeilometerCloth)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • RadarFirstTop
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • time_offset
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • MPL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseMplCloth)
  • Heights
  • CloudLayerTopHeightMplCloth
  • CloudLayerBottomHeightMplCamp
  • BLC/VCEIL Standard Algorithm Cloud Base Height(CloudBaseCeilometerStd)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • MPL Campbell et al. Algorithm Cloud Base Height(CloudBaseMplCamp)
  • MMCR Spectral Width(SpectralWidth)
  • CloudLayerBottomHeightMplCloth
  • CloudLayerTopHeightMplCamp
  • Cloud Mask Occurrence, MPL Campbell et al. algorithm(CloudMaskMplCamp)
sgpmmcrspectraC1.a0:
  • base_time
  • lat
  • Cloud, doppler spectrum, at altitude, 8-mm radar(Spectra)
  • GateSpacing
  • NumSpectraAveraged
  • Delay
  • PulseWidth
  • time_offset
  • Switch
  • NumCodeBits
  • NumFft
  • alt
  • InterPulsePeriod
  • StartGateDelay
  • NumCoherentIntegrations
  • NumHeights
  • Heights
  • lon
sgpmmcrmomC1.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)
sgpmmcrmomC1.b1:
  • lat
  • SignalToNoiseRatio
  • RadarConstant
  • GateSpacing
  • TimeAvg
  • RxCalTimeStamp
  • NumHeights
  • PeakTransmittedPowerAvg
  • DataQualityStatus
  • ModeDescription
  • ModeNum
  • SkyNoiseLevel
  • CalCheckTime
  • time_offset
  • heights
  • Power
  • RangeCorrectedPower
  • NoiseLevel
  • AvgNoiseLevel
  • CalCheckLevel
  • alt
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MinimumDetectableReflectivity
  • NumReceivers
  • NumCodeBits
  • NumCoherentIntegrations
  • TWTStatusCode
  • MMCR Spectral Width(SpectralWidth)
  • lon
  • CircularDepolarizationRatio
  • time
  • NumFFT
  • ReceiverNumber
  • NumSpectralAverages
  • base_time
  • ClutterHeight
  • PulseWidth
  • RxGain
  • InterPulsePeriod
  • DCFilterONOFF
  • ReceiverMode
  • StartGateDelay
  • Rx290KLevel
  • NyquistVelocity
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • WindowingONOFF

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