Data Quality Reports for Session: 185432 User: wangd2 Completed: 05/05/2017

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D160104.7SGP Site Power Outage Due to Winter StormsgpdisdrometerC1.b1Does not affect quality
D160212.3SGP - Data System Upgrades: Data MissingsgpdisdrometerC1.b1Missing
D160418.1SGP/DISDROMETER/C1 - Incorrect zero values reportedsgpdisdrometerC1.b1Incorrect
D170303.7SGP/DISDROMETER/C1/E13 - Loss of powersgpdisdrometerC1.b1Incorrect


DQRID : D160104.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/26/2015000001/01/20162359Does not affect quality
Subject:
SGP Site Power Outage Due to Winter Storm
DataStreams:sgpdisdrometerC1.b1
Description:
On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought 
sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result 
was very very slick roads and mass power outages.
 
The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th.  
The power was restored on 7:56 PM CDT on Wednesday, December 30th
 
Site Emergency procedures were activated and Technicians drained water out of instrument 
reservoirs and other measures as needed, early Monday morning.
 
On Wednesdays as roads and power started was restored to much of the areas east of I-35 , 
Site Technicians performed maintenance on several Extended Facilities.

During this period, data are potentially missing, incorrect, or suspect.  Carefully 
inspect the data before use.
Measurements:sgpdisdrometerC1.b1:
  • drop_class
  • radar_reflectivity
  • distribution_intercept
  • distribution_slope
  • mean_diam_drop_class
  • diam_max
  • delta_diam
  • base_time
  • liq_water
  • num_drop
  • time
  • fall_velocity
  • North latitude(lat)
  • East longitude(lon)
  • Precipitation(precip_dis)
  • time_offset
  • Rain rate(rain_rate)
  • number_density
  • Altitude above mean sea level(alt)
  • energy_flux

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DQRID : D160212.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/26/2016180001/27/20162145Missing
Subject:
SGP - Data System Upgrades: Data Missing
DataStreams:sgpdisdrometerC1.b1
Description:
The data system was undergoing upgrades.  Data were lost during this period.
Measurements:sgpdisdrometerC1.b1:
  • drop_class
  • qc_num_drop
  • radar_reflectivity
  • distribution_intercept
  • distribution_slope
  • mean_diam_drop_class
  • diam_max
  • delta_diam
  • base_time
  • liq_water
  • qc_rain_rate
  • time
  • num_drop
  • fall_velocity
  • North latitude(lat)
  • East longitude(lon)
  • Precipitation(precip_dis)
  • qc_precip_dis
  • time_offset
  • Rain rate(rain_rate)
  • number_density
  • qc_time
  • Altitude above mean sea level(alt)
  • energy_flux

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DQRID : D160418.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/26/2016000004/28/20161515Incorrect
Subject:
SGP/DISDROMETER/C1 - Incorrect zero values reported
DataStreams:sgpdisdrometerC1.b1
Description:
The instrument reports all zeros for the last 2/3 of each hour.
Measurements:sgpdisdrometerC1.b1:
  • radar_reflectivity
  • Precipitation(precip_dis)
  • distribution_slope
  • distribution_intercept
  • Rain rate(rain_rate)
  • diam_max
  • number_density
  • liq_water
  • num_drop
  • energy_flux

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DQRID : D170303.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/20/2017041902/23/20172100Incorrect
Subject:
SGP/DISDROMETER/C1/E13 - Loss of power
DataStreams:sgpdisdrometerC1.b1
Description:
Loss of power resulted in instrument going down.
Measurements:sgpdisdrometerC1.b1:
  • drop_class
  • radar_reflectivity
  • distribution_intercept
  • distribution_slope
  • mean_diam_drop_class
  • diam_max
  • delta_diam
  • liq_water
  • num_drop
  • fall_velocity
  • Precipitation(precip_dis)
  • Rain rate(rain_rate)
  • number_density
  • energy_flux

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END OF DATA