DQRs for Session: 114439 User:jzbCompleted: 09-26-2008

Data Quality Reports for Session: 114439 User: jzb Completed: 09/26/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D060511.3	TWP/MMCR/C3 - Possibly corrupt netcdf file	twpmmcrspecmomC3.a0
D060629.1	TWP/MMCR/C3 - Diminished Reflectivity Sensitivity	twpmmcrmomC3.b1, twpmmcrspecmomC3.a0
D070112.1	TWP/MMCR/C1 - Reprocess: Height Error	twpmmcrmomC1.00, twpmmcrmomC1.b1, twpmmcrspecmomC1.a0
D070112.2	TWP/MMCR/C2 - Reprocess: Height Error	twpmmcrmomC2.00, twpmmcrmomC2.b1, twpmmcrspecmomC2.a0
D070112.3	TWP/MMCR/C3 - Reprocess: Height Error	twpmmcrmomC3.00, twpmmcrmomC3.b1, twpmmcrspecmomC3.a0
D070129.1	TWP/MMCR/C1 - Error in recorded heights	twpmmcrmomC1.00, twpmmcrmomC1.b1, twpmmcrspecmomC1.a0

DQRID : D060511.3

Start Date	Start Time	End Date	End Time
03/31/2006	0200	03/31/2006	0259

Subject:	TWP/MMCR/C3 - Possibly corrupt netcdf file
DataStreams:	twpmmcrspecmomC3.a0
Description:	The file twpmmcrspecmomC3.a0.20060331.020000.cdf was potentially corrupted during storage at the archive. The file successfully responds to an "ncdump" command and the data look reasonable. However, the file is only half the volume expected. There are no backups for these data so we are unable to attempt a recovery.
Measurements:	twpmmcrspecmomC3.a0: First Order Estimate of Spectral Count Calibration(CalibrationConstant) Elevation(Elevation) RadarWaveLength(m) / [4 * InterPulsePeriod(s) * NumCoherentIntegrations](NyquistVelocity) DC Filtering ON-OFF Status(DCFilterONOFF) Radar Constant(RadarConstant) Height of Center of Each Range Bin(Heights) Operating Set for this Record(ModeNum) Receiver Gain(RxGain) Number of Points in FFT(NumFFT) Azimuth(Azimuth) Gate Spacing(GateSpacing) Receiver Cal Check Time Stamp(CalCheckTime) Number of Code Bits(NumCodeBits) Number of Receiver(NumReceivers) Data Quality Status(DataQualityStatus) Inter-Pulse Period(InterPulsePeriod) Pulse Width(PulseWidth) Max. height of clutter removal(ClutterHeight) Spectral Data(Spectra) radar mode char identifier(ModeDescription) Receiver Mode(ReceiverMode) Number of Gate Heights(NumHeights) Receiver Sky Noise(SkyNoiseLevel) Delay to First Range Gate(StartGateDelay) Number of Spectral Averages(NumSpectralAverages) Minimum detectable reflectivity(MinimumDetectableReflectivity) Receiver 290K Level(Rx290KLevel) Receiver Cal Time Stamp(RxCalTimeStamp) Windowing ON-OFF Status(WindowingONOFF) Current Receiver Number(ReceiverNumber) Number of Coherent Integrations(NumCoherentIntegrations) Receiver Cal Check Level(CalCheckLevel)

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DQRID : D060629.1

Start Date	Start Time	End Date	End Time
12/02/2005	0000	07/18/2006	2359

Subject:	TWP/MMCR/C3 - Diminished Reflectivity Sensitivity
DataStreams:	twpmmcrmomC3.b1, twpmmcrspecmomC3.a0
Description:	Radar sensitivity was diminished by approximately 15 - 20 dBZ during this period. The result is that upper level cloud tops may be missed and thin clouds, particularly thin cirrus, may not be detected during this period. Reflectivity was correctly calibrated, so values are correct where signals were detected. The problem was caused by lightning damage to the low noise amplifier (LNA). The LNA was replaced on 20060718.
Measurements:	twpmmcrspecmomC3.a0: First Order Estimate of Spectral Count Calibration(CalibrationConstant) Radar Constant(RadarConstant) Receiver Gain(RxGain) Receiver Sky Noise(SkyNoiseLevel) Minimum detectable reflectivity(MinimumDetectableReflectivity) Receiver 290K Level(Rx290KLevel) Receiver Cal Check Level(CalCheckLevel) twpmmcrmomC3.b1: Receiver Sky Noise(SkyNoiseLevel) Receiver Cal Check Level(CalCheckLevel) Minimum detectable reflectivity(MinimumDetectableReflectivity) Range Corrected Calibrated Power(RangeCorrectedPower) Receiver 290K Level(Rx290KLevel) MMCR Reflectivity(Reflectivity) Radar Constant(RadarConstant) Receiver Gain(RxGain)

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DQRID : D070112.1

Start Date	Start Time	End Date	End Time
06/16/2006	0300	01/11/2007	1620

Subject:	TWP/MMCR/C1 - Reprocess: Height Error
DataStreams:	twpmmcrmomC1.00, twpmmcrmomC1.b1, twpmmcrspecmomC1.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:	twpmmcrmomC1.b1: Array of heights for each power(heights) twpmmcrspecmomC1.a0: Height of Center of Each Range Bin(Heights) twpmmcrmomC1.00: Raw data stream - documentation not supported(raw)

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DQRID : D070112.2

Start Date	Start Time	End Date	End Time
11/27/2006	0600	01/11/2007	1624

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: Array of heights for each power(heights) twpmmcrspecmomC2.a0: Height of Center of Each Range Bin(Heights) twpmmcrmomC2.00: Raw data stream - documentation not supported(raw)

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DQRID : D070112.3

Start Date	Start Time	End Date	End Time
11/04/2005	0500	01/10/2007	2000

Subject:	TWP/MMCR/C3 - Reprocess: Height Error
DataStreams:	twpmmcrmomC3.00, twpmmcrmomC3.b1, twpmmcrspecmomC3.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:	twpmmcrspecmomC3.a0: Height of Center of Each Range Bin(Heights) twpmmcrmomC3.00: Raw data stream - documentation not supported(raw) twpmmcrmomC3.b1: Array of heights for each power(heights)

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DQRID : D070129.1

Start Date	Start Time	End Date	End Time
06/16/2006	0300	11/28/2006	2359

Subject:	TWP/MMCR/C1 - Error in recorded heights
DataStreams:	twpmmcrmomC1.00, twpmmcrmomC1.b1, twpmmcrspecmomC1.a0
Description:	An error in MMCR configuration resulted in a timing error. This caused erroneous height values (too large) to be recorded in the data files.
Measurements:	twpmmcrmomC1.b1: Array of heights for each power(heights) twpmmcrspecmomC1.a0: Height of Center of Each Range Bin(Heights) twpmmcrmomC1.00: Raw data stream - documentation not supported(raw)

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