DQR ID | Subject | Data Streams Affected |
---|---|---|
D040424.1 | SGP/MPL/C1 - Signal degrading | sgpmplC1.a1, sgpmplnor1campC1.c1 |
D040426.4 | SGP/MPL/C1 - Detector Failure | sgpmplC1.a1, sgpmplnor1campC1.c1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/2002 | 0000 | 01/16/2003 | 2359 |
Subject: | SGP/MPL/C1 - Signal degrading |
DataStreams: | sgpmplC1.a1, sgpmplnor1campC1.c1 |
Description: | The MPL viewport window was blown off during a storm on 2002/09/25. The MPL received a soaking of rain. Following this event, although site operations cleaned and dried the optics, the lidar performance continued to degrade over the next few months. Although initially suitable for cloud detection, by Dec 10th the lidar was providing useful results only during the day (oddly enough). By Jan 16, the detector was dead. It is not recommended to depend on night-time cloud base heights after Dec. 10 2002. It is not recommended to use any of the data after 9/25 for aerosol retrievals. |
Measurements: | sgpmplC1.a1:
sgpmplnor1campC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/16/2003 | 0000 | 01/31/2003 | 2359 |
Subject: | SGP/MPL/C1 - Detector Failure |
DataStreams: | sgpmplC1.a1, sgpmplnor1campC1.c1 |
Description: | The detector failed following a period of data quality degradation. The MPL was replaced on 1/31/2003. |
Measurements: | sgpmplC1.a1:
sgpmplnor1campC1.c1:
|