Data Quality Reports for Session: 138058 User: wqquan Completed: 10/15/2011


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D100216.6GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fieldsgrwvceil25kM1.b1
D100402.3GRW/WACR/M1 - Coherence Filter ContaminationgrwwacrM1.b1


DQRID : D100216.6
Start DateStart TimeEnd DateEnd Time
04/13/2009000010/31/20092359
Subject:
GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields
DataStreams:grwvceil25kM1.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.
Measurements:grwvceil25kM1.b1:
  • sum_backscatter


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DQRID : D100402.3
Start DateStart TimeEnd DateEnd Time
06/09/2009160004/02/20101200
Subject:
GRW/WACR/M1 - Coherence Filter Contamination
DataStreams:grwwacrM1.b1
Description:
The coherence filter (software) that was added to the WACR under BCR-01500 was causing 
occasional contamination to WACR data.  This was exhibited in the first 2000 m of range by 
streaking in the data over a period of time. It didn't occur often and when it did, it is 
quite obvious looking at the plots.  

On 4/2/2010 at 12:00 UTC, the coherence filter was modified to preclude working on signals 
with a SNR greater than 60 dB.  The vendor thinks this will solve the problem.
Measurements:grwwacrM1.b1:
  • lat
  • PowerHotLoad
  • Temp_Computer_Enclosure
  • Temp_Antenna_Bottom
  • SignalToNoiseRatio
  • heights
  • PowerAmbientLoad
  • Temp_LNA
  • Temp_Modulator_Control
  • Polarization
  • PowerTransmitDriver
  • Temp_Hot
  • txpower
  • Temp_ambient
  • MMCR Spectral Width(SpectralWidth)
  • Noise
  • Temp_Outside
  • Temp_Future
  • base_time
  • alt
  • time
  • time_offset
  • wacr_status
  • Temp_Chiller
  • lon
  • Cloud, reflectivity, at altitude(Reflectivity)
  • Temp_Antenna_Top
  • Temp_Chiller_Supply
  • Temp_modulator
  • Temp_EIKA
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • Temp_Chiller_Return


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