Data Quality Reports for Session: 185973 User: bdolan Completed: 06/02/2017

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D140212.1SGP/CSAPR/I7 - Missing sweep in volumesgpcsaprrhiI7.00Does not affect quality
D150805.1SGP/CSAPR/I7 - PhiDp Decreasing with RangesgpcsaprrhiI7.00Incorrect
D170310.13SGP/CSAPR/I7 - Missing SectorssgpcsaprrhiI7.00Does 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:sgpcsaprrhiI7.00
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:sgpcsaprrhiI7.00:
  • altitude
  • Differential propagation phase shift(dp_phase_shift)
  • Unfiltered Doppler spectral width(doppler_spectral_width_unf)
  • power_horizontal_unf
  • time
  • Reflectivity horizontal(reflectivity_horizontal)
  • norm_coherent_power_unf
  • power_vertical
  • Unfiltered differential reflectivity(diff_reflectivity_unf)
  • norm_coherent_power
  • Unfiltered lag-0 co-polar correlation coefficient(copol_coeff_unf)
  • range
  • Unfiltered reflectivity in horizontal polarization(reflectivity_horizontal_unf)
  • Unfiltered specific differential phase(diff_phase_unf)
  • azimuth
  • Clutter filtered reflectivity in vertical polarization(reflectivity_vertical)
  • Specific differential phase, clutter filtered(diff_phase)
  • Differential reflectivity, clutter filtered(diff_reflectivity)
  • Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
  • power_vertical_unf
  • Doppler spectral width, clutter filtered(doppler_spectral_width)
  • Unfiltered differential propagation phase shift(dp_phase_shift_unf)
  • Mean Doppler Velocity(mean_doppler_velocity)
  • power_horizontal
  • Unfiltered reflectivity in vertical polarization(reflectivity_vertical_unf)
  • Unfiltered Mean Doppler velocity(mean_doppler_velocity_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:sgpcsaprrhiI7.00
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:sgpcsaprrhiI7.00:
  • Unfiltered differential propagation phase shift(dp_phase_shift_unf)
  • Unfiltered specific differential phase(diff_phase_unf)
  • Differential propagation phase shift(dp_phase_shift)
  • Specific differential phase, clutter filtered(diff_phase)

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DQRID : D170310.13
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/25/2011000003/08/20171604Does not affect quality
Subject:
SGP/CSAPR/I7 - Missing Sectors
DataStreams:sgpcsaprrhiI7.00
Description:
Periodically, there would be missing sectors or elevations in the data.
Measurements:sgpcsaprrhiI7.00:
  • Unfiltered lag-0 co-polar correlation coefficient(copol_coeff_unf)
  • Unfiltered reflectivity in horizontal polarization(reflectivity_horizontal_unf)
  • Unfiltered specific differential phase(diff_phase_unf)
  • Clutter filtered reflectivity in vertical polarization(reflectivity_vertical)
  • Differential propagation phase shift(dp_phase_shift)
  • Specific differential phase, clutter filtered(diff_phase)
  • Unfiltered Doppler spectral width(doppler_spectral_width_unf)
  • Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
  • power_horizontal_unf
  • Differential reflectivity, clutter filtered(diff_reflectivity)
  • power_vertical_unf
  • Doppler spectral width, clutter filtered(doppler_spectral_width)
  • Unfiltered differential propagation phase shift(dp_phase_shift_unf)
  • Mean Doppler Velocity(mean_doppler_velocity)
  • power_horizontal
  • Reflectivity horizontal(reflectivity_horizontal)
  • Unfiltered reflectivity in vertical polarization(reflectivity_vertical_unf)
  • norm_coherent_power_unf
  • power_vertical
  • Unfiltered differential reflectivity(diff_reflectivity_unf)
  • Unfiltered Mean Doppler velocity(mean_doppler_velocity_unf)
  • norm_coherent_power

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