Data Quality Reports for Session: 121755 User: jean1charl Completed: 08/19/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040525.17SGP/RL/C1 - Metadata errorssgprlC1.a0
D070717.1SGP/RL/C1 - Invalid liquid water channel datasgprlC1.a0


DQRID : D040525.17
Start DateStart TimeEnd DateEnd Time
06/03/1996150303/17/20032359
Subject:
SGP/RL/C1 - Metadata errors
DataStreams:sgprlC1.a0
Description:
The latitude, longitude and altitude of the Raman Lidar were
incorrectly entered into the ARM database.  The correct location
of the SGP.C1 Raman Lidar is:
      Lat: 36.609N
      Lon: 97.487W
      Alt:    311m
Measurements:sgprlC1.a0:
  • lon(lon)
  • lat(lat)
  • Dummy altitude for Zeb(alt)

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DQRID : D070717.1
Start DateStart TimeEnd DateEnd Time
09/06/2006192003/05/20080000
Subject:
SGP/RL/C1 - Invalid liquid water channel data
DataStreams:sgprlC1.a0
Description:
On 20060906, the liquid water channel (LWC) was disabled due to the removal of its 
photomultiplier tube (PMT).  Consequently, the signals recorded for the LWC contain either zero 
or pure noise after that date.

Also, starting on 20070522, the LWC was populated with data from the T2 channel as a 
result of a slight reconfiguration of the data acquisition system.

On 4 March 2008 The LW channel photomultiplier tube was reinstalled in the Raman lidar. 
Effective 0000 UTC on 5 March 2008 the LW channel began producing valid liquid water data 
once again.
Measurements:sgprlC1.a0:
  • Count rate in the high liquid channel(liquid_counts_high)
  • Summed analog signal in the liquid water channel(liquid_analog_high)

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