Data Quality Reports for Session: 180375 User: sbiraud Completed: 10/11/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D140108.1SGP/MET/E11/E15/E21/E31/E33/E34/E35/E36/E37/E38/E9 - Ice on wind sensorssgpmetE9.b1Suspect
D140801.3SGP/MET/E9 - Rain gauge cloggedsgpmetE9.b1Suspect
D151201.2SGP ALL INSTRUMENTS - Icing EventsgpmetE9.b1Does not affect quality
D160203.2SGP/MET/E9 - False tips in high windssgpmetE9.b1Does not affect quality
D160411.3SGP/MET/E9 - Wind sensor malfunctionsgpmetE9.b1Does not affect quality
D160930.2SGP/MET/E9 - Bad batterysgpmetE9.b1Missing


DQRID : D140108.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/21/2013000012/25/20132359Suspect
Subject:
SGP/MET/E11/E15/E21/E31/E33/E34/E35/E36/E37/E38/E9 - Ice on wind sensors
DataStreams:sgpmetE9.b1
Description:
Wind data was affected by ice buildup on the sensors. Data during this period should be 
used with caution. Exact times of sensor thaw are unknown.
Measurements:sgpmetE9.b1:
  • Wind speed vector mean(wspd_vec_mean)
  • Wind direction vector mean(wdir_vec_mean)
  • wdir_vec_std
  • Wind speed, lower, 1-min avg(wspd_arith_mean)

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DQRID : D140801.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/02/2014000006/18/20141805Suspect
Subject:
SGP/MET/E9 - Rain gauge clogged
DataStreams:sgpmetE9.b1
Description:
The tipping bucket rain gauge was found to be clogged during bi-weekly maintenance. 
Precipitation data during this time may be suspect.
Measurements:sgpmetE9.b1:
  • TBRG precipitation total, corrected(tbrg_precip_total_corr)
  • tbrg_precip_total

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DQRID : D151201.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/27/2015000011/30/20152359Does not affect quality
Subject:
SGP ALL INSTRUMENTS - Icing Event
DataStreams:sgpmetE9.b1
Description:
An icing event (winter storm Cara) passed slowly through the area during this time frame.  
Instruments at the SGP may have been affected by ice accumulation.
Measurements:sgpmetE9.b1:
  • Humidity, relative, at 2-m height, 1-min avg(rh_mean)
  • Wind speed vector mean(wspd_vec_mean)
  • Temperature mean(temp_mean)
  • Wind direction vector mean(wdir_vec_mean)
  • Atmospheric pressure(atmos_pressure)
  • wdir_vec_std
  • Vapor pressure mean, calculated(vapor_pressure_mean)
  • TBRG precipitation total, corrected(tbrg_precip_total_corr)
  • tbrg_precip_total
  • Wind speed, lower, 1-min avg(wspd_arith_mean)

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DQRID : D160203.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/29/1993000002/01/20162038Does not affect quality
Subject:
SGP/MET/E9 - False tips in high winds
DataStreams:sgpmetE9.b1
Description:
The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.
Measurements:sgpmetE9.b1:
  • TBRG precipitation total, corrected(tbrg_precip_total_corr)
  • tbrg_precip_total

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DQRID : D160411.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/12/2016120104/06/20161510Does not affect quality
Subject:
SGP/MET/E9 - Wind sensor malfunction
DataStreams:sgpmetE9.b1
Description:
Loose wire contacts and possible bad bearings caused intermittent wind data dropouts 
during this time.
Measurements:sgpmetE9.b1:
  • Wind speed vector mean(wspd_vec_mean)
  • Wind direction vector mean(wdir_vec_mean)
  • wdir_vec_std
  • Wind speed, lower, 1-min avg(wspd_arith_mean)

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DQRID : D160930.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/17/2016200109/18/20162002Missing
09/18/2016204309/20/20162146Missing
09/06/2016150709/09/20161513Missing
09/10/2016071909/10/20160719Missing
09/15/2016213509/16/20162137Missing
08/30/2016150408/31/20161506Missing
Subject:
SGP/MET/E9 - Bad battery
DataStreams:sgpmetE9.b1
Description:
A faulty battery caused periodic missing data.
Measurements:sgpmetE9.b1:
  • qc_temp_mean
  • Wind speed vector mean(wspd_vec_mean)
  • Wind direction vector mean(wdir_vec_mean)
  • Atmospheric pressure(atmos_pressure)
  • qc_tbrg_precip_total
  • qc_vapor_pressure_mean
  • qc_tbrg_precip_total_corr
  • Temperature mean(temp_mean)
  • temp_std
  • qc_logger_volt
  • tbrg_precip_total
  • qc_time
  • time_offset
  • East longitude(lon)
  • Wind speed, lower, 1-min avg(wspd_arith_mean)
  • Humidity, relative, at 2-m height, 1-min avg(rh_mean)
  • Altitude above mean sea level(alt)
  • qc_wdir_vec_mean
  • qc_wdir_vec_std
  • qc_wspd_vec_mean
  • qc_rh_mean
  • time
  • TBRG precipitation total, corrected(tbrg_precip_total_corr)
  • North latitude(lat)
  • qc_logger_temp
  • vapor_pressure_std
  • logger_temp
  • logger_volt
  • rh_std
  • wdir_vec_std
  • Vapor pressure mean, calculated(vapor_pressure_mean)
  • base_time
  • qc_wspd_arith_mean
  • qc_atmos_pressure

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