| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D000111.4 | Reprocess:SGP BLC reprocessing status | sgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1 |
| D000204.6 | SGP/BLC - Retraction of D000111.4 BLC offset | sgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1 |
| D040525.22 | SGP/BLC/C1 - Metadata errors | sgpblcC1.a1 |
| D990508.1 | SGP/BLC - BLC data for May 7, 1999 18:00 GMT abnormal | sgpblcC1.00, sgpblcC1.a1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/01/1994 | 0000 | 06/30/1999 | 2359 |
| Subject: | Reprocess:SGP BLC reprocessing status |
| DataStreams: | sgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1 |
| Description: | The BLC data was the subject of a reprocessing effort last summer in support of the ARSCL effort. As a result three distinct windows of data with varying levels of processing have been created. 1) 940401-961031 - not reprocessed. This data has a 110m offset in the reported cloud base height (see P980831.1). No sgpblcprofC1.a1 data available. Reprocessing required. 2) 961101-990630 - reprocessed. The 110m offset was corrected in this data and the blcprof data were created. This data still contains the defunct field 'operational_state' which was determined to be useless and was removed in later data. This data will be reprocessed at a later date to remove the operational_state field to create a continuity with the current data. 3) 990701-present - reprocessed/processed without 'operational_state' field. Offset has been corrected or no longer exists. The format of this data is the target for the previous two data windows. |
| Measurements: | sgpblcC1.00:
sgpblcprofC1.a1:
sgpblcC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/01/1994 | 0000 | 02/03/2000 | 2359 |
| 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:
sgpblcprofC1.a1:
sgpblcC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 08/11/1994 | 0000 | 05/23/2000 | 2359 |
| 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:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/07/1999 | 1800 | 05/07/1999 | 1900 |
| Subject: | SGP/BLC - BLC data for May 7, 1999 18:00 GMT abnormal |
| DataStreams: | sgpblcC1.00, sgpblcC1.a1 |
| Description: | The data mode of the BLC was modified by the mentor for several minutes to test the capability of a new ingest to process both the amplitude and Klett lidar profiles. |
| Measurements: | sgpblcC1.00:
sgpblcC1.a1:
|