DQRs for Session: 153889 User:xzhengCompleted: 10-17-2013

Data Quality Reports for Session: 153889 User: xzheng Completed: 10/17/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D020226.5	TWP/MMCR/C2 - Intermittent missing data	twpmmcrcalC2.a1, twpmmcrmomentsC2.a1, twpmmcrmonC2.a1, twpmmcrpowC2.a1, twpmmcrmonC2.00, twpmmcrC2.00, twpmmcrmomentsC2.00, twpmmcrcalC2.00, twpmmcrpowC2.00
D080415.1	TWP/ARSCL/C2 - Bad MMCR data	twparscl1clothC2.c1, twparsclbnd1clothC2.c1, twpmmcrmode01v0071clothC2.c1, twpmmcrmode02v0041clothC2.c1, twpmmcrmode03v0051clothC2.c1, twpmmcrmode04v0041clothC2.c1
D100215.5	TWP/VCEIL/C2 - Reprocess: Incorrect serial_number and sum_backscatter fields	twpvceil25kC2.b1
D120228.6	TWP/MPLCMASK/C2 - Cloud layer metadata misleading	twp30smplcmask1zwangC2.c1
D990910.1	Calibration interruption at TWP Nauru	twpvceil25kC2.a1, twpvceil25kC2.b1, twpvceil25kC2.00

DQRID : D020226.5

Start Date	Start Time	End Date	End Time
08/13/2000	0000	06/07/2001	1520

Subject:	TWP/MMCR/C2 - Intermittent missing data
DataStreams:	twpmmcrcalC2.a1, twpmmcrmomentsC2.a1, twpmmcrmonC2.a1, twpmmcrpowC2.a1, twpmmcrmonC2.00, twpmmcrC2.00, twpmmcrmomentsC2.00, twpmmcrcalC2.00, twpmmcrpowC2.00
Description:	During the time period identified in this DQR the MMCR was experiencing a variety of hardware problems that resulted in intermittent missing data.
Measurements:	twpmmcrpowC2.00: Raw data stream - documentation not supported twpmmcrC2.00: Raw data stream - documentation not supported twpmmcrmomentsC2.00: Raw data stream - documentation not supported twpmmcrmonC2.00: Raw data stream - documentation not supported twpmmcrmonC2.a1: XAxisTilt lat base_time OutdoorTemperature DMSPCMinus12Volts UPSBatteryVoltage time_offset InterfaceBoxPlus28Volts RFCUDTxPlus12Volts ExtIFModPlus12Volts IFModPlus15Volts UPSOutputVoltage UPSBatteryTime lon RadarPCMinus12Volts TempCirc1 TempCirc2 IFModMinus15Volts SwitchFault DMSPCPlus12Volts RadarPCPlus5Volts RFCUDPlus15Volts YAxisTilt RadarPCMinus5Volts PulseWidthFault RadarPCPlus12Volts DMSPCMinus5Volts 16GHzPhaseLock 2GHzPhaseLock ADCalVoltage IndoorHumidity IndoorTemperature UPSInputVoltage UPSOutputCurrent InterfaceBoxMinus5Volts RFCUDRecPlus12Volts InterfaceBoxPlus15Volts alt ExtIFModPlus15Volts InterfaceBoxMinus15Volts TimeNanoSeconds InterfaceBoxPlus5Volts1 DMSPCPlus5Volts InterfaceBoxPlus5Volts2 UPSBatteryCurrent twpmmcrmomentsC2.a1: PulseWidth alt GateSpacing SignalToNoiseRatio NumCoherentIntegrations 10000 * [SpectralWidth(m/s) / NyquistVelocity(m/s)](SpectralWidthValue) NumHeights NyquistVelocity Delay NumSpectraAveraged base_time Heights StartGateDelay 10000 * [MeanDopperVelocity(m/s) / NyquistVelocity(m/s)](MeanDopplerValue) Noise InterPulsePeriod lat NumCodeBits time_offset NumFft Switch lon twpmmcrcalC2.a1: NumSpectraAveraged ReceiverPathLoss time_offset alt RxCalibrationNoiseCrv NumCoherentIntegrations base_time lon RangeCorrectedCalibratedPower NumFft GateSpacing RxCalibrationNoiseCrvSignal PartialDecodingLoss lat CirculatorAttenuation1 NumHeights InterPulsePeriod TransmitterPathLoss NumCodeBits Cloud, reflectivity, at altitude(Reflectivity) PulseWidth StartGateDelay CodedPulseLoss PeakTransmittedPower Heights twpmmcrcalC2.00: Raw data stream - documentation not supported twpmmcrpowC2.a1: base_time time_offset TransmittedRFPower lat lon TimeNanoSeconds alt

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DQRID : D080415.1

Start Date	Start Time	End Date	End Time
12/20/1999	0000	12/29/1999	2359

Subject:	TWP/ARSCL/C2 - Bad MMCR data
DataStreams:	twparscl1clothC2.c1, twparsclbnd1clothC2.c1, twpmmcrmode01v0071clothC2.c1, twpmmcrmode02v0041clothC2.c1, twpmmcrmode03v0051clothC2.c1, twpmmcrmode04v0041clothC2.c1
Description:	The MMCR was not operating properly during this period so the data should not have been used in determining cloud boundaries or radar moments.
Measurements:	twparsclbnd1clothC2.c1: CloudLayerBottomHeightMplCamp CloudLayerTopHeightMplCamp CloudLayerTopHeightMplCloth CloudLayerBottomHeightMplCloth twpmmcrmode01v0071clothC2.c1: MMCR Spectral Width(SpectralWidth) MMCR Mean Doppler Velocity(MeanDopplerVelocity) SignaltoNoiseRatio Cloud, reflectivity, at altitude(Reflectivity) twparscl1clothC2.c1: Cloud, reflectivity, at altitude(Reflectivity) CloudLayerBottomHeightMplCamp MMCR Mean Doppler Velocity(MeanDopplerVelocity) MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate) CloudLayerTopHeightMplCloth MMCR Spectral Width(SpectralWidth) SignaltoNoiseRatio CloudLayerTopHeightMplCamp RadarFirstTop MMCR Reflectivity, clutter removed(ReflectivityNoClutter) CloudLayerBottomHeightMplCloth twpmmcrmode04v0041clothC2.c1: MMCR Spectral Width(SpectralWidth) SignaltoNoiseRatio Cloud, reflectivity, at altitude(Reflectivity) MMCR Mean Doppler Velocity(MeanDopplerVelocity) twpmmcrmode02v0041clothC2.c1: MMCR Mean Doppler Velocity(MeanDopplerVelocity) Cloud, reflectivity, at altitude(Reflectivity) SignaltoNoiseRatio MMCR Spectral Width(SpectralWidth) twpmmcrmode03v0051clothC2.c1: MMCR Mean Doppler Velocity(MeanDopplerVelocity) Cloud, reflectivity, at altitude(Reflectivity) SignaltoNoiseRatio MMCR Spectral Width(SpectralWidth)

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DQRID : D100215.5

Start Date	Start Time	End Date	End Time
10/28/1998	0000	10/31/2009	2359

Subject:	TWP/VCEIL/C2 - Reprocess: Incorrect serial_number and sum_backscatter fields
DataStreams:	twpvceil25kC2.b1
Description:	Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. This DQR also applies to a1 level data.
Measurements:	twpvceil25kC2.b1: sum_backscatter

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DQRID : D120228.6

Start Date	Start Time	End Date	End Time
11/29/1998	0000	11/27/2006	2359

Subject:	TWP/MPLCMASK/C2 - Cloud layer metadata misleading
DataStreams:	twp30smplcmask1zwangC2.c1
Description:	The comment in the header for cloud_base_layer indicates that a value of -1 indicates that no cloud is detected. For the specified time range, a value of 0 indicates that no cloud is detected. Values greater than zero indicate cloudy conditions, otherwise it is clear.
Measurements:	twp30smplcmask1zwangC2.c1: cloud_base_layer

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DQRID : D990910.1

Start Date	Start Time	End Date	End Time
08/10/1999	0425	08/10/1999	0450

Subject:	Calibration interruption at TWP Nauru
DataStreams:	twpvceil25kC2.a1, twpvceil25kC2.b1, twpvceil25kC2.00
Description:	The ceilometer was tipped horizontal for a calibration check
Measurements:	twpvceil25kC2.b1: sum_backscatter tilt_angle lon vertical_visibility Third cloud base height(third_cbh) Second lowest cloud base height(second_cbh) background_light time_offset status_string laser_pulse_energy alt_highest_signal filename range alt Normalized corrected relative backscatter(backscatter) base_time receiver_sensitivity detection_status laser_temperature measurement_parameters status_flag Lowest cloud base height detected.(first_cbh) window_contamination lat twpvceil25kC2.00: Raw data stream - documentation not supported twpvceil25kC2.a1: lat sum_backscatter base_time Normalized corrected relative backscatter(backscatter) tilt_angle alt_highest_signal detection_status status_flag window_contamination filename receiver_sensitivity lon range Third cloud base height(third_cbh) measurement_parameters laser_temperature laser_pulse_energy alt Lowest cloud base height detected.(first_cbh) status_string vertical_visibility background_light Second lowest cloud base height(second_cbh) time_offset

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