Data Quality Reports for Session: 151721 User: tyler1k1we Completed: 07/22/2013

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D100729.5GRW/WACR/M1 - Reprocessed: Reflectivity and Height OffsetsgrwwacrM1.b1, grwwacrspeccmaskcopolM1.a0, grwwacrspeccmaskxpolM1.a0
D101007.2GRW/WACR/M1 - Missing datagrwwacrM1.b1
D120301.1GRW/WACR/M1 - Transmit power drop outsgrwwacrM1.b1, grwwacrspeccmaskcopolM1.a0, grwwacrspeccmaskxpolM1.a0


DQRID : D100729.5
Start DateStart TimeEnd DateEnd Time
05/14/2009000001/06/20110800
Subject:
GRW/WACR/M1 - Reprocessed: Reflectivity and Height Offsets
DataStreams:grwwacrM1.b1, grwwacrspeccmaskcopolM1.a0, grwwacrspeccmaskxpolM1.a0
Description:
The instrument vendor informed us of a range (height) offset of 13 m and provided updated 
reflectivity calibration.  All values reported for 'Reflectivity' were approximately 3 dB 
too low.   In addition, the Reflectivity in the first and fourth range gates (starting 
from the surface) needed to be further corrected by an additional 2.7 and -0.9 dB, 
respectively. The 'height' field values were 13.33 m too low.  The data were reprocessed to 
correct these problems.

The grwwacrM1.b1 data were reprocessed and archived in October 2010.  The 
grwwacrspeccmaskcopolM1.a0 and grwwacrspeccmaskxpolM1.a0 data were reprocessed and archived in January 
2012.
Measurements:grwwacrspeccmaskcopolM1.a0:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • heights
grwwacrM1.b1:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • heights
grwwacrspeccmaskxpolM1.a0:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • heights

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DQRID : D101007.2
Start DateStart TimeEnd DateEnd Time
09/01/2010210009/24/20101930
Subject:
GRW/WACR/M1 - Missing data
DataStreams:grwwacrM1.b1
Description:
Data are missing and unrecoverable.
Measurements:grwwacrM1.b1:
  • lat
  • PowerHotLoad
  • Temp_Computer_Enclosure
  • Temp_Antenna_Bottom
  • SignalToNoiseRatio
  • heights
  • PowerAmbientLoad
  • Temp_LNA
  • Polarization
  • Temp_Modulator_Control
  • PowerTransmitDriver
  • Temp_Hot
  • txpower
  • MMCR Spectral Width(SpectralWidth)
  • Temp_ambient
  • 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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DQRID : D120301.1
Start DateStart TimeEnd DateEnd Time
07/27/2009162710/19/20101237
Subject:
GRW/WACR/M1 - Transmit power drop outs
DataStreams:grwwacrM1.b1, grwwacrspeccmaskcopolM1.a0, grwwacrspeccmaskxpolM1.a0
Description:
At approximately 16:27 GMT on 20090727, txpower began intermittently dropping out and 
reporting slightly negative values.  This issue continued intermittently through 20090807 
when it stopped occurring.  The problem resumed 20091006 and continued to occur on a daily 
basis until the monitor detector was replaced 20101019.

The transmit power as measured by the detector after replacement was approximately 1.3 dB 
less than when it failed.  Reflectivity measurements have a +0/-1.3 dBZ of additional 
uncertainty for this period of time.
Measurements:grwwacrspeccmaskcopolM1.a0:
  • txpower
  • Cloud, reflectivity, at altitude(Reflectivity)
grwwacrM1.b1:
  • txpower
  • Cloud, reflectivity, at altitude(Reflectivity)
grwwacrspeccmaskxpolM1.a0:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • txpower

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END OF DATA