Data Quality Reports for Session: 106086 User: gaun Completed: 06/15/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070103.1TWP/MMCR/C2 - TWTA FailuretwpmmcrmomC2.00, twpmmcrmomC2.b1
D070112.2TWP/MMCR/C2 - Reprocess: Height ErrortwpmmcrmomC2.00, twpmmcrmomC2.b1, twpmmcrspecmomC2.a0


DQRID : D070103.1
Start DateStart TimeEnd DateEnd Time
08/12/2006210011/27/20060600
Subject:
TWP/MMCR/C2 - TWTA Failure
DataStreams:twpmmcrmomC2.00, twpmmcrmomC2.b1
Description:
The TWTA failed on 8/12/06.  It was replaced on 11/27/06.
Measurements:twpmmcrmomC2.b1:
  • Pulse Width(PulseWidth)
  • Minimum detectable reflectivity(MinimumDetectableReflectivity)
  • Receiver Cal Time Stamp(RxCalTimeStamp)
  • Windowing ON-OFF Status(WindowingONOFF)
  • Radar Constant(RadarConstant)
  • Time associated with hourly averaged values(TimeAvg)
  • Inter-Pulse Period(InterPulsePeriod)
  • MMCR Reflectivity(Reflectivity)
  • Receiver Gain(RxGain)
  • DC Filtering ON-OFF Status(DCFilterONOFF)
  • Number of Points in FFT(NumFFT)
  • Number of Receiver(NumReceivers)
  • Number of Code Bits(NumCodeBits)
  • Average Noise Level (S/N<0)(AvgNoiseLevel)
  • radar mode char identifier(ModeDescription)
  • Time offset of tweaks from base_time(time_offset)
  • Number of Spectral Averages(NumSpectralAverages)
  • Receiver Cal Check Level(CalCheckLevel)
  • Time offset from base_time(base_time)
  • Number of Coherent Integrations(NumCoherentIntegrations)
  • TWT Status Code, details forthcoming from MMCR vendor(TWTStatusCode)
  • Receiver Cal Check Time Stamp(CalCheckTime)
  • Data Quality Status(DataQualityStatus)
  • east longitude for all the input platforms.(lon)
  • Signal to noise ratio(SignalToNoiseRatio)
  • Receiver Mode(ReceiverMode)
  • Mean Noise Level(NoiseLevel)
  • Receiver Sky Noise(SkyNoiseLevel)
  • Power (uncalibrated)(Power)
  • altitude above sea levelaltunits(alt)
  • north latitude for all the input platforms.(lat)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • Max. height of clutter removal(ClutterHeight)
  • Circular Depolarization Ratio(CircularDepolarizationRatio)
  • Range Corrected Calibrated Power(RangeCorrectedPower)
  • Receiver 290K Level(Rx290KLevel)
  • RadarWaveLength(m) / [4 * InterPulsePeriod(s) * NumCoherentIntegrations](NyquistVelocity)
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)
  • Number of Gate Heights(NumHeights)
  • MMCR Spectral Width(SpectralWidth)
  • Peak tranmitted power, averaged over the course of the hour(PeakTransmittedPowerAvg)
  • Delay to First Range Gate(StartGateDelay)
  • Current Receiver Number(ReceiverNumber)
  • Time Spacing Between Gates(GateSpacing)
  • Range Heights (center of radar sample volume)(heights)
  • Operating Set for this Record(ModeNum)
twpmmcrmomC2.00:
  • Raw data stream - documentation not supported(raw)

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DQRID : D070112.2
Start DateStart TimeEnd DateEnd Time
11/27/2006060001/11/20071624
Subject:
TWP/MMCR/C2 - Reprocess: Height Error
DataStreams:twpmmcrmomC2.00, twpmmcrmomC2.b1, twpmmcrspecmomC2.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:twpmmcrmomC2.b1:
  • Range Heights (center of radar sample volume)(heights)
twpmmcrspecmomC2.a0:
  • Range Heights (center of radar sample volume)(Heights)
twpmmcrmomC2.00:
  • Raw data stream - documentation not supported(raw)

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