Data Quality Reports for Session: 106135 User: jlundqui Completed: 06/19/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000204.6SGP/BLC - Retraction of D000111.4 BLC offsetsgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1
D040525.22SGP/BLC/C1 - Metadata errorssgpblcC1.a1


DQRID : D000204.6
Start DateStart TimeEnd DateEnd Time
04/01/1994000002/03/20002359
Subject:
SGP/BLC - Retraction of D000111.4 BLC offset
DataStreams:sgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1
Description:
D000111.4 reported on the reprocessing status of the SGP BLC
data and indicated which time periods had been reprocessed to
remove a 110m offset.

First error:  the offset was actually 122m, not 110m.
Second error: an error in the reprocessing algorithm
              resulted in the offset not being removed.

This DQR retracts D000111.4.  All BLC data processed to date
still have a 122m offset.  That is the cloud base height 
reported in the data stream is 122m too high.

Data processed after 20000204 with version 7.0 of the algorithm 
(recorded in the header of the data file) do not contain the 
offset.

The data processed through 20000204 will be reprocessed
when resources are available.
Measurements:sgpblcC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpblcprofC1.a1:
  • Base height of third cloud detected with threshold algorithm(cloud3)
  • Base height of third cloud detected with Klett algorithm(kcloud3)
  • Base height of second cloud detected with threshold algorithm(cloud2)
  • Base height of lowest cloud detected with threshold algorithm(cloud1)
  • Base height of second cloud detected with Klett algorithm(kcloud2)
  • Base height of lowest cloud detected with Klett algorithm(kcloud1)
sgpblcC1.a1:
  • Base height of lowest cloud detected with Klett algorithm(kcloud1)
  • Base height of lowest cloud detected with threshold algorithm(cloud1)
  • Base height of third cloud detected with Klett algorithm(kcloud3)
  • Base height of third cloud detected with threshold algorithm(cloud3)
  • Base height of second cloud detected with Klett algorithm(kcloud2)
  • Base height of second cloud detected with threshold algorithm(cloud2)

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DQRID : D040525.22
Start DateStart TimeEnd DateEnd Time
08/11/1994000005/23/20002359
Subject:
SGP/BLC/C1 - Metadata errors
DataStreams:sgpblcC1.a1
Description:
The latitude, longitude and altitude of the Belfort Laser Ceilometer
were incorrectly entered into the ARM database.  The correct 
location of the SGP.C1 BLC was:
     Lat: 36.606N
     Lon: 97.485W
     Alt:    316m
Measurements:sgpblcC1.a1:
  • altitude above sea levelaltunits(alt)
  • east longitude for all the input platforms.(lon)
  • north latitude for all the input platforms.(lat)

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