Data Quality Reports for Session: 149449 User: kazutoshi1 Completed: 04/17/2013

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020606.1NSA/MMCR/C1 - NSA/C1/MMCR- Incorrect Calibrationsnsaarscl1clothC1.c1, nsammcrcalC1.a1, nsammcrmode03v0081clothC1.c1,
nsammcrmode04v0061clothC1.c1
D020823.37NSA/MMCR/C1 - Pulse controller failed due to water damagensammcrcalC1.a1, nsammcrmode01v0091clothC1.c1, nsammcrmode02v0061clothC1.c1,
nsammcrmode03v0081clothC1.c1, nsammcrmode04v0061clothC1.c1, nsammcrmomentsC1.a1, nsammcrmonC1.a1,
nsammcrpowC1.a1, nsaarscl1clothC1.c1
D020823.38NSA/MMCR/C1 - No radar pulse transmissionnsammcrmonC1.a1, nsammcrpowC1.a1, nsammcrcalC1.a1, nsammcrmode01v0091clothC1.c1,
nsammcrmode02v0061clothC1.c1, nsammcrmode03v0081clothC1.c1, nsammcrmode04v0061clothC1.c1,
nsammcrmomentsC1.a1, nsaarscl1clothC1.c1
D020823.39NSA/MMCR/C1 - MUX failurensammcrcalC1.a1, nsammcrmode01v0091clothC1.c1, nsammcrmode02v0061clothC1.c1,
nsammcrmode03v0081clothC1.c1, nsammcrmode04v0061clothC1.c1, nsammcrmomentsC1.a1, nsammcrmonC1.a1,
nsammcrpowC1.a1, nsaarscl1clothC1.c1
D090728.2NSA/ARSCL/C1 - Reflectivity values unreliablensaarscl1clothC1.c1, nsaarsclbnd1clothC1.c1, nsammcrmode1bl200712011clothC1.c1,
nsammcrmode2ci200712011clothC1.c1, nsammcrmode3ge200712011clothC1.c1,
nsammcrmode4ro200712011clothC1.c1
D110803.1NSA/ARSCL/C1 - Reflectivity too highnsaarscl1clothC1.c1, nsammcrmode1bl200712011clothC1.c1, nsammcrmode2ci200712011clothC1.c1,
nsammcrmode3ge200712011clothC1.c1, nsammcrmode4ro200712011clothC1.c1


DQRID : D020606.1
Start DateStart TimeEnd DateEnd Time
07/03/2001000007/26/20012359
Subject:
NSA/MMCR/C1 - NSA/C1/MMCR- Incorrect Calibrations
DataStreams:nsaarscl1clothC1.c1, nsammcrcalC1.a1, nsammcrmode03v0081clothC1.c1,
nsammcrmode04v0061clothC1.c1
Description:
From 3-July 2001 to 26-July 2001, the NSA MMCR calibration for the
two coded pulse modes is incorrect.  The values of reflectivity computed
by the radars autocalibration software are wrong because they use the
wrong radar constant.  The correct radar constants are: 8-bit coded
mode RC=16.344 and for the 32-bit coded RC=7.313. 

The only impact of the incorrect radar constants should be reflectivity
value
Measurements:nsammcrmode03v0081clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode04v0061clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsaarscl1clothC1.c1:
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)
nsammcrcalC1.a1:
  • Cloud, reflectivity, at altitude(Reflectivity)

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DQRID : D020823.37
Start DateStart TimeEnd DateEnd Time
06/04/1999043007/21/19992300
Subject:
NSA/MMCR/C1 - Pulse controller failed due to water damage
DataStreams:nsammcrcalC1.a1, nsammcrmode01v0091clothC1.c1, nsammcrmode02v0061clothC1.c1,
nsammcrmode03v0081clothC1.c1, nsammcrmode04v0061clothC1.c1, nsammcrmomentsC1.a1, nsammcrmonC1.a1,
nsammcrpowC1.a1, nsaarscl1clothC1.c1
Description:
Instrument had water damage that fried the pulse controller
card.  Images appear normal, but no clouds were detected
during this period because no radar pulse was being emitted.

Note from Karen Johnson: the ARSCL and MMCRMODE data fields
may or may not be suspect, depending on whether ARSCL correctly
identified the MMCR data as bad.
Measurements:nsammcrmomentsC1.a1:
  • NyquistVelocity
  • NumHeights
  • SignalToNoiseRatio
  • Heights
  • StartGateDelay
  • InterPulsePeriod
  • Switch
  • Delay
  • NumSpectraAveraged
  • 10000 * [MeanDopperVelocity(m/s) / NyquistVelocity(m/s)](MeanDopplerValue)
  • GateSpacing
  • Noise
  • PulseWidth
  • NumCodeBits
  • 10000 * [SpectralWidth(m/s) / NyquistVelocity(m/s)](SpectralWidthValue)
  • NumCoherentIntegrations
  • NumFft
nsammcrmonC1.a1:
  • PulseWidthFault
  • RadarPCPlus5Volts
  • ExtIFModPlus12Volts
  • DMSPCPlus5Volts
  • InterfaceBoxPlus15Volts
  • InterfaceBoxMinus15Volts
  • RadarPCMinus12Volts
  • RFCUDTxPlus12Volts
  • 2GHzPhaseLock
  • SwitchFault
  • RadarPCPlus12Volts
  • InterfaceBoxPlus5Volts2
  • InterfaceBoxPlus5Volts1
  • 16GHzPhaseLock
  • InterfaceBoxPlus28Volts
  • ADCalVoltage
  • RFCUDPlus15Volts
  • InterfaceBoxMinus5Volts
  • DMSPCPlus12Volts
  • IFModPlus15Volts
  • ExtIFModPlus15Volts
  • DMSPCMinus5Volts
  • DMSPCMinus12Volts
  • IFModMinus15Volts
  • RFCUDRecPlus12Volts
  • TimeNanoSeconds
  • TempCirc2
  • TempCirc1
  • RadarPCMinus5Volts
nsammcrmode01v0091clothC1.c1:
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
nsammcrmode03v0081clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • SignaltoNoiseRatio
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • MMCR Spectral Width(SpectralWidth)
nsammcrpowC1.a1:
  • TransmittedRFPower
  • TimeNanoSeconds
nsammcrmode02v0061clothC1.c1:
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
nsammcrmode04v0061clothC1.c1:
  • MMCR Spectral Width(SpectralWidth)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • SignaltoNoiseRatio
  • Cloud, reflectivity, at altitude(Reflectivity)
nsaarscl1clothC1.c1:
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • CloudLayerTopHeightMplCamp
  • RadarFirstTop
  • CloudLayerBottomHeightMplCloth
  • CloudLayerTopHeightMplCloth
  • Cloud, reflectivity, at altitude(Reflectivity)
  • ModeId
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • CloudLayerBottomHeightMplCamp
  • SignaltoNoiseRatio
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)
  • MMCR Spectral Width(SpectralWidth)
nsammcrcalC1.a1:
  • PartialDecodingLoss
  • GateSpacing
  • PeakTransmittedPower
  • Cloud, reflectivity, at altitude(Reflectivity)
  • CodedPulseLoss
  • NumCoherentIntegrations
  • RxCalibrationNoiseCrv
  • CirculatorAttenuation1
  • InterPulsePeriod
  • NumSpectraAveraged
  • TransmitterPathLoss
  • Heights
  • StartGateDelay
  • RxCalibrationNoiseCrvSignal
  • ReceiverPathLoss
  • NumCodeBits
  • PulseWidth
  • RangeCorrectedCalibratedPower
  • NumHeights
  • NumFft

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DQRID : D020823.38
Start DateStart TimeEnd DateEnd Time
01/15/1999030001/15/19990320
02/28/1999083002/28/19990900
12/14/1998143012/14/19981445
Subject:
NSA/MMCR/C1 - No radar pulse transmission
DataStreams:nsammcrmonC1.a1, nsammcrpowC1.a1, nsammcrcalC1.a1, nsammcrmode01v0091clothC1.c1,
nsammcrmode02v0061clothC1.c1, nsammcrmode03v0081clothC1.c1, nsammcrmode04v0061clothC1.c1,
nsammcrmomentsC1.a1, nsaarscl1clothC1.c1
Description:
A fault in transmission occurred so no radar pulse was emitted and therefore no return 
signal, only noise, was received.

Note from Karen Johnson: the ARSCL and MMCRMODE data fields
may or may not be suspect, depending on whether ARSCL correctly
identified the MMCR data as bad.
Measurements:nsammcrmomentsC1.a1:
  • NyquistVelocity
  • SignalToNoiseRatio
  • Heights
  • InterPulsePeriod
  • Delay
  • NumSpectraAveraged
  • 10000 * [MeanDopperVelocity(m/s) / NyquistVelocity(m/s)](MeanDopplerValue)
  • PulseWidth
  • NumCodeBits
  • 10000 * [SpectralWidth(m/s) / NyquistVelocity(m/s)](SpectralWidthValue)
  • NumHeights
  • StartGateDelay
  • Switch
  • GateSpacing
  • Noise
  • NumCoherentIntegrations
  • NumFft
nsammcrmonC1.a1:
  • PulseWidthFault
  • RadarPCPlus5Volts
  • ExtIFModPlus12Volts
  • InterfaceBoxPlus15Volts
  • SwitchFault
  • InterfaceBoxPlus5Volts2
  • IndoorTemperature
  • InterfaceBoxPlus5Volts1
  • 16GHzPhaseLock
  • RFCUDPlus15Volts
  • ExtIFModPlus15Volts
  • IFModMinus15Volts
  • RFCUDRecPlus12Volts
  • TimeNanoSeconds
  • TempCirc2
  • RadarPCMinus5Volts
  • TempCirc1
  • DMSPCPlus5Volts
  • InterfaceBoxMinus15Volts
  • RadarPCMinus12Volts
  • RFCUDTxPlus12Volts
  • 2GHzPhaseLock
  • RadarPCPlus12Volts
  • InterfaceBoxPlus28Volts
  • ADCalVoltage
  • IndoorHumidity
  • InterfaceBoxMinus5Volts
  • DMSPCPlus12Volts
  • IFModPlus15Volts
  • DMSPCMinus5Volts
  • DMSPCMinus12Volts
  • OutdoorTemperature
nsammcrmode01v0091clothC1.c1:
  • MMCR Spectral Width(SpectralWidth)
  • SignaltoNoiseRatio
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
nsammcrpowC1.a1:
  • TransmittedRFPower
  • TimeNanoSeconds
nsammcrmode03v0081clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • SignaltoNoiseRatio
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • MMCR Spectral Width(SpectralWidth)
nsammcrmode02v0061clothC1.c1:
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
nsammcrmode04v0061clothC1.c1:
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
  • Cloud, reflectivity, at altitude(Reflectivity)
nsaarscl1clothC1.c1:
  • CloudLayerTopHeightMplCamp
  • Cloud, reflectivity, at altitude(Reflectivity)
  • ModeId
  • CloudLayerBottomHeightMplCamp
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • RadarFirstTop
  • CloudLayerBottomHeightMplCloth
  • CloudLayerTopHeightMplCloth
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
nsammcrcalC1.a1:
  • PartialDecodingLoss
  • GateSpacing
  • Cloud, reflectivity, at altitude(Reflectivity)
  • NumCoherentIntegrations
  • CodedPulseLoss
  • TransmitterPathLoss
  • Heights
  • RxCalibrationNoiseCrvSignal
  • NumCodeBits
  • PulseWidth
  • RangeCorrectedCalibratedPower
  • NumFft
  • PeakTransmittedPower
  • RxCalibrationNoiseCrv
  • CirculatorAttenuation1
  • InterPulsePeriod
  • NumSpectraAveraged
  • StartGateDelay
  • ReceiverPathLoss
  • NumHeights

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DQRID : D020823.39
Start DateStart TimeEnd DateEnd Time
03/17/1999090003/18/19992359
Subject:
NSA/MMCR/C1 - MUX failure
DataStreams:nsammcrcalC1.a1, nsammcrmode01v0091clothC1.c1, nsammcrmode02v0061clothC1.c1,
nsammcrmode03v0081clothC1.c1, nsammcrmode04v0061clothC1.c1, nsammcrmomentsC1.a1, nsammcrmonC1.a1,
nsammcrpowC1.a1, nsaarscl1clothC1.c1
Description:
Data values dropped to background clear sky (noise level).
Other cloud instruments indicated it was cloudy. The MUX
card was replaced and good data started flowing again at 
00 GMT on 3/19.

Note from Karen Johnson: the ARSCL and MMCRMODE data fields
may or may not be suspect, depending on whether ARSCL correctly
identified the MMCR data as bad.
Measurements:nsammcrmomentsC1.a1:
  • NyquistVelocity
  • NumHeights
  • SignalToNoiseRatio
  • Heights
  • StartGateDelay
  • InterPulsePeriod
  • Switch
  • Delay
  • NumSpectraAveraged
  • 10000 * [MeanDopperVelocity(m/s) / NyquistVelocity(m/s)](MeanDopplerValue)
  • GateSpacing
  • Noise
  • PulseWidth
  • NumCodeBits
  • 10000 * [SpectralWidth(m/s) / NyquistVelocity(m/s)](SpectralWidthValue)
  • NumCoherentIntegrations
  • NumFft
nsammcrmonC1.a1:
  • PulseWidthFault
  • RadarPCPlus5Volts
  • ExtIFModPlus12Volts
  • DMSPCPlus5Volts
  • InterfaceBoxPlus15Volts
  • InterfaceBoxMinus15Volts
  • RadarPCMinus12Volts
  • RFCUDTxPlus12Volts
  • 2GHzPhaseLock
  • SwitchFault
  • RadarPCPlus12Volts
  • InterfaceBoxPlus5Volts2
  • InterfaceBoxPlus5Volts1
  • 16GHzPhaseLock
  • InterfaceBoxPlus28Volts
  • ADCalVoltage
  • RFCUDPlus15Volts
  • InterfaceBoxMinus5Volts
  • DMSPCPlus12Volts
  • IFModPlus15Volts
  • ExtIFModPlus15Volts
  • DMSPCMinus5Volts
  • DMSPCMinus12Volts
  • IFModMinus15Volts
  • RFCUDRecPlus12Volts
  • TimeNanoSeconds
  • TempCirc2
  • TempCirc1
  • RadarPCMinus5Volts
nsammcrmode01v0091clothC1.c1:
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
nsammcrmode03v0081clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • SignaltoNoiseRatio
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • MMCR Spectral Width(SpectralWidth)
nsammcrpowC1.a1:
  • TransmittedRFPower
  • TimeNanoSeconds
nsammcrmode02v0061clothC1.c1:
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • SignaltoNoiseRatio
  • MMCR Spectral Width(SpectralWidth)
nsammcrmode04v0061clothC1.c1:
  • MMCR Spectral Width(SpectralWidth)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • SignaltoNoiseRatio
  • Cloud, reflectivity, at altitude(Reflectivity)
nsaarscl1clothC1.c1:
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • CloudLayerTopHeightMplCamp
  • RadarFirstTop
  • CloudLayerBottomHeightMplCloth
  • CloudLayerTopHeightMplCloth
  • Cloud, reflectivity, at altitude(Reflectivity)
  • ModeId
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • CloudLayerBottomHeightMplCamp
  • SignaltoNoiseRatio
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)
  • MMCR Spectral Width(SpectralWidth)
nsammcrcalC1.a1:
  • PartialDecodingLoss
  • GateSpacing
  • PeakTransmittedPower
  • Cloud, reflectivity, at altitude(Reflectivity)
  • CodedPulseLoss
  • NumCoherentIntegrations
  • RxCalibrationNoiseCrv
  • CirculatorAttenuation1
  • InterPulsePeriod
  • NumSpectraAveraged
  • TransmitterPathLoss
  • Heights
  • StartGateDelay
  • RxCalibrationNoiseCrvSignal
  • ReceiverPathLoss
  • NumCodeBits
  • PulseWidth
  • RangeCorrectedCalibratedPower
  • NumHeights
  • NumFft

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DQRID : D090728.2
Start DateStart TimeEnd DateEnd Time
12/01/2007000002/13/20082359
Subject:
NSA/ARSCL/C1 - Reflectivity values unreliable
DataStreams:nsaarscl1clothC1.c1, nsaarsclbnd1clothC1.c1, nsammcrmode1bl200712011clothC1.c1,
nsammcrmode2ci200712011clothC1.c1, nsammcrmode3ge200712011clothC1.c1,
nsammcrmode4ro200712011clothC1.c1
Description:
Reflectivity dBZ values should not be used.  The reported cloud boundaries may 
underestimate cloud tops, particularly for high or thick clouds.  Also thin high clouds may have 
been missed entirely, especially if there were lower-level cloud layers below them. During 
this time period, the MMCR was transmitting in  circular polarization, rather than 
(correct) linear polarization. This caused reported Reflectivity values to be too low by an 
unknown amount, resulting in an effective loss of radar sensitivity.

Areas identified as have having hydrometeor detections are correct, however some areas 
marked as clear may in fact contain cloud due to the MMCR's low sensitivity during this time.
Measurements:nsammcrmode4ro200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode3ge200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode1bl200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode2ci200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsaarsclbnd1clothC1.c1:
  • CloudLayerBottomHeightMplCloth
  • CloudLayerTopHeightMplCloth
nsaarscl1clothC1.c1:
  • CloudLayerTopHeightMplCloth
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • RadarFirstTop
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)
  • CloudLayerBottomHeightMplCloth

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DQRID : D110803.1
Start DateStart TimeEnd DateEnd Time
01/10/2010000001/18/20101830
02/10/2010000002/23/20100230
Subject:
NSA/ARSCL/C1 - Reflectivity too high
DataStreams:nsaarscl1clothC1.c1, nsammcrmode1bl200712011clothC1.c1, nsammcrmode2ci200712011clothC1.c1,
nsammcrmode3ge200712011clothC1.c1, nsammcrmode4ro200712011clothC1.c1
Description:
The calibration of the MMCR was incorrect during this period, causing large positive 
shifts in reported reflectivity values.  As a result, the reflectivies reported by ARSCL are 
also too high.  However, other radar moments (MeanDopplerVelocity and SpectralWidth) and 
cloud boundaries reported in ARSCL data files are not affected and can be used.

Do not use ReflectivityBestEstimate, Reflectivity, or ReflectivityNoClutter values during 
this period.
Measurements:nsammcrmode4ro200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode3ge200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode1bl200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsammcrmode2ci200712011clothC1.c1:
  • Cloud, reflectivity, at altitude(Reflectivity)
nsaarscl1clothC1.c1:
  • MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
  • Cloud, reflectivity, at altitude(Reflectivity)
  • MMCR Reflectivity, clutter removed(ReflectivityNoClutter)

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