Data Quality Reports for Session: 179776 User: sherman Completed: 09/16/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D140212.1SGP/CSAPR/I7 - Missing sweep in volumesgpcsaprsecI7.00Does not affect quality
D150805.1SGP/CSAPR/I7 - PhiDp Decreasing with RangesgpcsaprsecI7.00Incorrect
D160114.1SGP/CSAPR/I7 - Reprocess: Datastream name changesgpcsaprsecI7.00Does not affect quality


DQRID : D140212.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/22/2012000003/28/20141800Does not affect quality
Subject:
SGP/CSAPR/I7 - Missing sweep in volume
DataStreams:sgpcsaprsecI7.00
Description:
The CSAPR lowest elevation angle changes throughout the day.  Normally starts out at 0.5º 
and ends up around 2.6º with a majority of the angles at 0.75º.  

The problem is in the software ingest. This is the ingest that is internal to the radar 
software that converts the processed data from local buffer to MDV files. As a result there 
was a missing sweep in the volume coverage pattern (VCP). This missing sweep is not 
systematic. Therefore, there are missing PPI sweeps in the VCP.
The problem was fixed with a configuration change in the software and changing the ingest 
to produce CF Radial NetCdf data. No such problems have been seen in the CF Radial NetCdf 
data
Measurements:sgpcsaprsecI7.00:
  • Doppler spectral width, clutter filtered(doppler_spectral_width)
  • azimuth
  • Clutter filtered reflectivity in vertical polarization(reflectivity_vertical)
  • Reflectivity horizontal(reflectivity_horizontal)
  • power_horizontal_unf
  • Unfiltered lag-0 co-polar correlation coefficient(copol_coeff_unf)
  • norm_coherent_power
  • Mean Doppler Velocity(mean_doppler_velocity)
  • power_vertical_unf
  • Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
  • Specific differential phase, clutter filtered(diff_phase)
  • Unfiltered reflectivity in horizontal polarization(reflectivity_horizontal_unf)
  • range
  • Unfiltered specific differential phase(diff_phase_unf)
  • norm_coherent_power_unf
  • power_vertical
  • time
  • Differential reflectivity, clutter filtered(diff_reflectivity)
  • Differential propagation phase shift(dp_phase_shift)
  • power_horizontal
  • Unfiltered Mean Doppler velocity(mean_doppler_velocity_unf)
  • altitude
  • Unfiltered Doppler spectral width(doppler_spectral_width_unf)
  • Unfiltered reflectivity in vertical polarization(reflectivity_vertical_unf)
  • Unfiltered differential reflectivity(diff_reflectivity_unf)
  • Unfiltered differential propagation phase shift(dp_phase_shift_unf)

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DQRID : D150805.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/02/2012000010/21/20152150Incorrect
Subject:
SGP/CSAPR/I7 - PhiDp Decreasing with Range
DataStreams:sgpcsaprsecI7.00
Description:
The differential phase is decreasing with range during this period, it should be 
increasing with range.  There are also periods of obviously bad PhiDp caused by a problem with the 
digital receiver software.
Measurements:sgpcsaprsecI7.00:
  • Unfiltered specific differential phase(diff_phase_unf)
  • Differential propagation phase shift(dp_phase_shift)
  • Unfiltered differential propagation phase shift(dp_phase_shift_unf)
  • Specific differential phase, clutter filtered(diff_phase)

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DQRID : D160114.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/25/2011000012/22/20152359Does not affect quality
Subject:
SGP/CSAPR/I7 - Reprocess: Datastream name change
DataStreams:sgpcsaprsecI7.00
Description:
The following changes have been made to the CSAPR datastream names to be consistent with 
other ARM radars.

csaprsec -> csaprppi
csaprvert -> csaprvpt

Reference: BCR-02146
Measurements:sgpcsaprsecI7.00:
  • Doppler spectral width, clutter filtered(doppler_spectral_width)
  • azimuth
  • Clutter filtered reflectivity in vertical polarization(reflectivity_vertical)
  • Reflectivity horizontal(reflectivity_horizontal)
  • power_horizontal_unf
  • Unfiltered lag-0 co-polar correlation coefficient(copol_coeff_unf)
  • norm_coherent_power
  • Mean Doppler Velocity(mean_doppler_velocity)
  • power_vertical_unf
  • Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
  • Specific differential phase, clutter filtered(diff_phase)
  • Unfiltered reflectivity in horizontal polarization(reflectivity_horizontal_unf)
  • range
  • Unfiltered specific differential phase(diff_phase_unf)
  • norm_coherent_power_unf
  • power_vertical
  • time
  • Differential reflectivity, clutter filtered(diff_reflectivity)
  • Differential propagation phase shift(dp_phase_shift)
  • power_horizontal
  • Unfiltered Mean Doppler velocity(mean_doppler_velocity_unf)
  • altitude
  • Unfiltered Doppler spectral width(doppler_spectral_width_unf)
  • Unfiltered reflectivity in vertical polarization(reflectivity_vertical_unf)
  • Unfiltered differential reflectivity(diff_reflectivity_unf)
  • Unfiltered differential propagation phase shift(dp_phase_shift_unf)

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