| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D000111.4 | Reprocess:SGP BLC reprocessing status | sgpblcC1.00, sgpblcC1.a1, sgpblcprofC1.a1 |
| D020927.1 | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
| D040525.28 | SGP/MPL/C1 - Metadata errors | sgpmplC1.a1, sgpmplnor1campC1.c1 |
| D040525.29 | SGP/MPL/C1 - Metadata errors | sgpmplcbh1scottC1.c1 |
| D040526.7 | SGP/MMCR/C1 - Metadata errors | sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1, sgpmmcrmomentsC1.a1 |
| D970626.4 | MMCR interference test | sgpmmcrC1.00, sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1 |
| D970628.1 | Transmitter off | sgpmmcrC1.00, sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1 |
| D970628.2 | Transmitter off | sgpmmcrC1.00, sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1 |
| D980331.1 | Instrument misalignment report | sgpmplnor1campC1.c1 |
| 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 |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 05/01/1996 | 0000 | 01/19/2000 | 2359 |
| Subject: | SGP/MPL/C1 - Metadata errors |
| DataStreams: | sgpmplC1.a1, sgpmplnor1campC1.c1 |
| Description: | The latitude, longitude and altitude of the Micropulse Lidar (MPL) were incorrectly entered into the ARM database. The correct location of the SGP.C1 MPL is: Lat: 36.606N Lon: 97.485W Alt: 316m |
| Measurements: | sgpmplC1.a1:
sgpmplnor1campC1.c1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/10/1994 | 0000 | 01/19/2000 | 2359 |
| Subject: | SGP/MPL/C1 - Metadata errors |
| DataStreams: | sgpmplcbh1scottC1.c1 |
| Description: | The latitude, longitude and altitude of the Micropulse Lidar (MPL) were incorrectly entered into the ARM database. The correct location of the SGP.C1 MPL is: Lat: 36.606N Lon: 97.485W Alt: 316m |
| Measurements: | sgpmplcbh1scottC1.c1:
|
| 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:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/26/1997 | 0800 | 06/26/1997 | 0830 |
| Subject: | MMCR interference test |
| DataStreams: | sgpmmcrC1.00, sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1 |
| Description: | MMCR was turned off for interference testing. |
| Measurements: | sgpmmcrpowC1.a1:
sgpmmcrmonC1.a1:
sgpmmcrC1.00:
sgpmmcrcalC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/28/1997 | 0000 | 06/28/1997 | 0030 |
| Subject: | Transmitter off |
| DataStreams: | sgpmmcrC1.00, sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1 |
| Description: | The transmitter was turned off during this period. |
| Measurements: | sgpmmcrpowC1.a1:
sgpmmcrmonC1.a1:
sgpmmcrC1.00:
sgpmmcrcalC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/28/1997 | 0900 | 06/28/1997 | 0930 |
| Subject: | Transmitter off |
| DataStreams: | sgpmmcrC1.00, sgpmmcrcalC1.a1, sgpmmcrmonC1.a1, sgpmmcrpowC1.a1 |
| Description: | The mmcr was not transmitting. |
| Measurements: | sgpmmcrpowC1.a1:
sgpmmcrmonC1.a1:
sgpmmcrC1.00:
sgpmmcrcalC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/15/1997 | 0000 | 09/10/1997 | 0000 |
| Subject: | Instrument misalignment report |
| DataStreams: | sgpmplnor1campC1.c1 |
| Description: | A low-resolution (300 m) MPL system (unit number 04) was installed at the SGP site in April '97 upon the laser diode failure of the 02 unit in March. Calibration of this instrument in August found that the optics were misaligned causing a near range focusing error in the data. Calibration files produced for this data, while acceptable, do not completely correct for the problem. As a result, aerosol property retrievals using this data are not suggested. Cloud boundary heights, though appear satisfactory. This system was removed from SGP in early September |
| Measurements: | sgpmplnor1campC1.c1:
|