Data Quality Reports for Session: 109863 User: sbenson Completed: 01/12/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070201.2TWP/VCEIL/C2 - optical cross-talk compensationtwpvceil25kC2.b1
D070329.1TWP/VCEIL/C2 - Receiver failuretwpvceil25kC2.b1


DQRID : D070201.2
Start DateStart TimeEnd DateEnd Time
12/13/2006000002/05/20070028
Subject:
TWP/VCEIL/C2 - optical cross-talk compensation
DataStreams:twpvceil25kC2.b1
Description:
The ceilometer gave frequent optical cross-talk compensation warnings, was insensitive to 
high clouds, and the tropics window was deteriorated. The instrument was replaced with a 
spare.
Measurements:twpvceil25kC2.b1:
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Vertical visibility(vertical_visibility)
  • Altitude of highest signal(alt_highest_signal)
  • Third cloud base height(third_cbh)
  • Second lowest cloud base height(second_cbh)
  • Millivolts at internal ADC input(window_contamination)

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DQRID : D070329.1
Start DateStart TimeEnd DateEnd Time
03/11/2007212004/17/20072325
Subject:
TWP/VCEIL/C2 - Receiver failure
DataStreams:twpvceil25kC2.b1
Description:
The receiver failed and the instrument was replaced.  Data during the specified period are 
not valid.
Measurements:twpvceil25kC2.b1:
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Vertical visibility(vertical_visibility)
  • Altitude of highest signal(alt_highest_signal)
  • Third cloud base height(third_cbh)
  • Second lowest cloud base height(second_cbh)
  • Lowest cloud base height detected.(first_cbh)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • Backscatter sum(sum_backscatter)

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