Data Quality Reports for Session: 178136 User: wainwrightc2 Completed: 06/29/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D141124.9SGP/DL/C1 - Instrument failuresgpdlfptC1.b1
D160229.3SGP/DL/DLPROF/C1 - Instrumental artifact in vertical velocity variance profilessgpdlfptC1.b1


DQRID : D141124.9
Start DateStart TimeEnd DateEnd Time
07/23/2014180011/18/20141946
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
  • range
  • Altitude above mean sea level(alt)
  • Radial velocity(radial_velocity)
  • intensity
  • Attenuated backscatter(attenuated_backscatter)
  • East longitude(lon)
  • base_time
  • elevation
  • time

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DQRID : D160229.3
Start DateStart TimeEnd DateEnd Time
04/20/2011160007/23/20151900
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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