Data Quality Reports for Session: 105473 User: kjohnson Completed: 05/01/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070112.2TWP/MMCR/C2 - Reprocess: Height ErrortwpmmcrmomC2.00, twpmmcrmomC2.b1, twpmmcrspecmomC2.a0
D070201.2TWP/VCEIL/C2 - optical cross-talk compensationtwpvceil25kC2.b1


DQRID : D070112.2
Start DateStart TimeEnd DateEnd Time
11/27/2006060001/11/20071624
Subject:
TWP/MMCR/C2 - Reprocess: Height Error
DataStreams:twpmmcrmomC2.00, twpmmcrmomC2.b1, twpmmcrspecmomC2.a0
Description:
A timing error was found in the PIRAQ MMCR's.  It resulted in recorded heights being too 
high for each radar mode by the following amounts: 
   Mode 1: 24.8756 m too high
   Mode 2: 25.6249 m too high
   Mode 3: 33.1176 m too high
   Mode 4: 33.1176 m too high
Range gate spacing was not affected.
Measurements:twpmmcrmomC2.b1:
  • Range Heights (center of radar sample volume)(heights)
twpmmcrspecmomC2.a0:
  • Range Heights (center of radar sample volume)(Heights)
twpmmcrmomC2.00:
  • Raw data stream - documentation not supported(raw)

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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 volume backscattering 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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