SGP/BLC - Retraction of D000111.4 BLC offset

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.

• Cloud, base height, second lowest base detected with threshold algorithm(cloud2)
• Cloud, base height, lowest cloud detected with threshold algorithm(cloud1)
• Cloud, base height, third cloud detected by Klett algorithm(kcloud3)
• Cloud, base height, second lowest base detected by Klett algorithm(kcloud2)
• Cloud, base height, lowest cloud detected by Klett algorithm(kcloud1)
• Cloud, base height, third base detected with thrreshold algorithm(cloud3)

• Raw data stream - documentation not supported

• Cloud, base height, third base detected with thrreshold algorithm(cloud3)
• Cloud, base height, second lowest base detected with threshold algorithm(cloud2)
• Cloud, base height, lowest cloud detected with threshold algorithm(cloud1)
• Cloud, base height, lowest cloud detected by Klett algorithm(kcloud1)
• Cloud, base height, second lowest base detected by Klett algorithm(kcloud2)
• Cloud, base height, third cloud detected by Klett algorithm(kcloud3)

SGP/BLC/C1 - Metadata errors

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

• alt
• lon
• lat