Data Quality Reports for Session: 182434 User: zhengy1 Completed: 12/19/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D141124.9SGP/DL/C1 - Instrument failuresgpdlfptC1.b1Missing
D160229.3SGP/DL/DLPROF/C1 - Instrumental artifact in vertical velocity variance profilessgpdlfptC1.b1Suspect


DQRID : D141124.9
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/23/2014180011/18/20141946Missing
Subject:
SGP/DL/C1 - Instrument failure
DataStreams:sgpdlfptC1.b1
Description:
In July the SGP DL experienced a failure. The instrument was subsequently sent back to the 
vendor for repair and upgrade. That work was successfully completed in October. The 
instrument was then shipped back to SGP and reinstalled in November.
Measurements:sgpdlfptC1.b1:
  • North latitude(lat)
  • azimuth
  • time_offset
  • Altitude above mean sea level(alt)
  • Radial velocity(radial_velocity)
  • range
  • intensity
  • Attenuated backscatter(attenuated_backscatter)
  • East longitude(lon)
  • base_time
  • elevation
  • time

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DQRID : D160229.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/20/2011160007/23/20151900Suspect
Subject:
SGP/DL/DLPROF/C1 - Instrumental artifact in vertical velocity variance profiles
DataStreams:sgpdlfptC1.b1
Description:
Long-term averages of vertical velocity variance profiles developed from vertical staring 
data show a height-dependent sinusoidal modulation superimposed on the atmospheric 
variance profile. This modulation causes a wiggle in the variance profile. The period of the 
wiggle is about 350 m, and the effect is most obvious during hot afternoon periods in the 
summer months. The exact cause of this problem is not known, but we suspect that it may be 
caused by temperature sensitivity in beam alignment.
Measurements:sgpdlfptC1.b1:
  • Radial velocity(radial_velocity)

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