DQR ID | Subject | Data Streams Affected |
---|---|---|
D000204.6 | SGP/BLC - Retraction of D000111.4 BLC offset | sgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1 |
D020927.1 | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
D040525.22 | SGP/BLC/C1 - Metadata errors | sgpblcC1.a1 |
D040526.7 | SGP/MMCR/C1 - Metadata errors | sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1, sgpmmcrmomentsC1.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 |
---|---|---|---|
12/01/1996 | 0000 | 02/04/2000 | 2359 |
Subject: | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities |
DataStreams: | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
Description: | Prior to February 4, 2000, the ARSCL data set incorporated data from the Beaufort Laser Ceilometer as one of its inputs. Because of the BLC's high spatial resolution, this data was often chosen by ARSCL as the "CloudBaseBestEstimate" for boundary layer clouds. It was subsequently determined that the BLC cloud base was biased, with the BLC reporting cloud base heights that are 122 meters too high. The bias error will be corrected when the entire ARSCL data set is reprocessed as part of release_4. (The release version number is included the the netCDF global comments). This reprocessing will also include a small correction the the MMCR near-field reflectivities. This correction is less than 1 dB except for hydrometers within 200 meters of the surface. Thanks to Roger Marchand for helping bracket this problem. |
Measurements: | sgparsclbnd1clothC1.c1:
sgparsclcbh1clothC1.c1:
sgparscl1clothC1.c1:
|
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 |
---|---|---|---|
11/08/1996 | 0000 | 05/05/2003 | 2359 |
Subject: | SGP/MMCR/C1 - Metadata errors |
DataStreams: | sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1, sgpmmcrmomentsC1.a1 |
Description: | The latitude, longitude and altitude of the MMCR were incorrectly entered into the ARM database. The correct location of the SGP.C1 MMCR is: Lat: 36.606N Lon: 97.485W Alt: 316m |
Measurements: | sgpmmcrpowC1.a1:
sgpmmcrmonC1.a1:
sgpmmcrmomentsC1.a1:
sgpmmcrcalC1.a1:
|