DQRID : D050222.2
Start DateStart TimeEnd DateEnd Time
01/16/2005003002/11/20052115
more
Subject:
SGP/MMCR/C1 - Power supply failure
DataStreams:sgparscl1clothC1.c1, sgpmmcrmomC1.b1, sgpmmcrmomC1.00, sgparsclbnd1clothC1.c1,
sgpmmcrspectraC1.a0
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.
Suggestions: 
Do not use the data.
Measurements:sgparscl1clothC1.c1:
  • MMCR Signal-to-Noise Ratio(SignaltoNoiseRatio)
  • Microwave Radiometer Wet Window/Optical Rain Gauge Cloud Base Height(CloudBasePrecipitation)
  • MMCR Spectral Width(SpectralWidth)
  • Bottom Height of Hydrometeor Layer from Composite (MMCR/Campbell et al. MPL)
    Algorithms(CloudLayerBottomHeightMplCamp)
  • Bottom Height of Hydrometeor Layer from Composite (MMCR/Clothiaux et al. MPL)
    Algorithms(CloudLayerBottomHeightMplCloth)
  • BLC/VCEIL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseCeilometerCloth)
  • MMCR Mode I.D.(ModeId)
  • Time offset from base_time(time_offset)
  • MMCR Top Height of Lowest Detected Layer before Clutter Removal(RadarFirstTop)
  • Range Heights (center of radar sample volume)(Heights)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • BLC/VCEIL Standard Algorithm Cloud Base Height(CloudBaseCeilometerStd)
  • LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • MMCR Reflectivity with Clutter Removed(ReflectivityNoClutter)
  • MMCR Best Estimate of Hydrometeor Reflectivity(ReflectivityBestEstimate)
  • Top Height of Hydrometeor Layer from Composite (MMCR/Campbell et al. MPL)
    Algorithms(CloudLayerTopHeightMplCamp)
  • MPL Scott Algorithm Cloud Base Height(CloudBaseMplScott)
  • MPL Campbell et al. Algorithm Cloud Base Height(CloudBaseMplCamp)
  • Reflectivity(Reflectivity)
  • base time in epoch(base_time)
  • Top Height of Hydrometeor Layer from Composite (MMCR/Clothiaux et al. MPL)
    Algorithms(CloudLayerTopHeightMplCloth)
  • MPL Campbell et al. Algorithm Cloud Mask Occurrence(CloudMaskMplCamp)
  • MPL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseMplCloth)
more
sgpmmcrmomC1.b1:
  • Number of Code Bits(NumCodeBits)
  • base time in epoch(base_time)
  • Receiver Mode(ReceiverMode)
  • Current Receiver Number(ReceiverNumber)
  • Minimum detectable reflectivity(MinimumDetectableReflectivity)
  • Receiver 290K Level(Rx290KLevel)
  • Inter-Pulse Period(InterPulsePeriod)
  • Number of Receiver(NumReceivers)
  • Max. height of clutter removal(ClutterHeight)
  • -180.0 - +180.0(alt)
  • Circular Depolarization Ratio(CircularDepolarizationRatio)
  • Delay to First Range Gate(StartGateDelay)
  • time_in_seconds_since_volume_start(time)
  • Receiver Cal Check Time Stamp(CalCheckTime)
  • Time associated with hourly averaged values(TimeAvg)
  • North Latitude(lat)
  • Average Noise Level (S/N<0)(AvgNoiseLevel)
  • Power (uncalibrated)(Power)
  • Pulse Width(PulseWidth)
  • TWT Status Code, details forthcoming from MMCR vendor(TWTStatusCode)
  • radar mode char identifier(ModeDescription)
  • lon(lon)
  • Gate Spacing(GateSpacing)
  • Radar Constant(RadarConstant)
  • Receiver Cal Check Level(CalCheckLevel)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • Mean Noise Level(NoiseLevel)
  • Operating Set for this Record(ModeNum)
  • Number of Spectral Averages(NumSpectralAverages)
  • MMCR Spectral Width(SpectralWidth)
  • Number of Points in FFT(NumFFT)
  • Data Quality Status(DataQualityStatus)
  • Receiver Sky Noise(SkyNoiseLevel)
  • Number of Coherent Integrations(NumCoherentIntegrations)
  • Range Corrected Calibrated Power(RangeCorrectedPower)
  • Time offset from base_time(time_offset)
  • Windowing ON-OFF Status(WindowingONOFF)
  • Reflectivity(Reflectivity)
  • DC Filtering ON-OFF Status(DCFilterONOFF)
  • Number of Range Gates(NumHeights)
  • Range Heights (center of radar sample volume)(heights)
  • RadarWaveLength(m) / [4 * InterPulsePeriod(s) * NumCoherentIntegrations](NyquistVelocity)
  • Signal to Noise Ratio(SignalToNoiseRatio)
  • Peak tranmitted power, averaged over the course of the hour(PeakTransmittedPowerAvg)
  • Receiver Cal Time Stamp(RxCalTimeStamp)
  • Receiver Gain(RxGain)
more
sgpmmcrspectraC1.a0:
  • Number of Code Bits(NumCodeBits)
  • Spectra(Spectra)
  • Inter-Pulse Period(InterPulsePeriod)
  • lon(lon)
  • Delay through Rx(Delay)
  • Gate Spacing(GateSpacing)
  • Number of Range Gates(NumHeights)
  • Pulse Width(PulseWidth)
  • Time offset from base_time(time_offset)
  • Number of Coherent Integrations(NumCoherentIntegrations)
  • Delay to First Range Gate(StartGateDelay)
  • base time in epoch(base_time)
  • Range Heights (center of radar sample volume)(Heights)
  • North Latitude(lat)
  • Rx bandwidtch switch code(Switch)
  • -180.0 - +180.0(alt)
  • Number of Ffts(NumFft)
  • Number of Spectra Averaged(NumSpectraAveraged)
more
sgparsclbnd1clothC1.c1:
  • LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
  • base time in epoch(base_time)
  • Bottom Height of Hydrometeor Layer from Composite (MMCR/Clothiaux et al. MPL)
    Algorithms(CloudLayerBottomHeightMplCloth)
  • Time offset from base_time(time_offset)
  • Bottom Height of Hydrometeor Layer from Composite (MMCR/Campbell et al. MPL)
    Algorithms(CloudLayerBottomHeightMplCamp)
  • Top Height of Hydrometeor Layer from Composite (MMCR/Clothiaux et al. MPL)
    Algorithms(CloudLayerTopHeightMplCloth)
  • Top Height of Hydrometeor Layer from Composite (MMCR/Campbell et al. MPL)
    Algorithms(CloudLayerTopHeightMplCamp)
more
sgpmmcrmomC1.00:
  • (Raw data stream - documentation not supported)
more

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