| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D050406.2 | SGP/VCEIL/B5 - Noisy Backscatter | sgpvceil25kB5.b1 |
| D060707.5 | SGP/VCEIL/C1 - low amplitude | sgpvceil25kC1.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/19/2004 | 1330 | 04/13/2005 | 2359 |
| Subject: | SGP/VCEIL/B5 - Noisy Backscatter |
| DataStreams: | sgpvceil25kB5.b1 |
| Description: | Since October of 2004, the noise in the backscatter plots occasionally become high in amplitude for periods of time lasting anywhere from an hour or so to as much as a day. This problem appears similar to a dirty window (such as the problem at B6 last week), but the fact that the plots show high amplitude for short durations of time imply that this problem is different. Cloud base height detection appears to be unaffected. |
| Measurements: | sgpvceil25kB5.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/06/2004 | 1820 | 05/05/2005 | 1841 |
| Subject: | SGP/VCEIL/C1 - low amplitude |
| DataStreams: | sgpvceil25kC1.b1 |
| Description: | When the instrument was replaced with a spare, the backscatter plots began displaying a suspiciously low amount of amplitude (noise) but the cloud base heights were not affected. Discovered that when the vendor repaired this unit in August 2004, noise compensation was set to "OFF". Changed the parameters to "ON". Also noted that the measurement units was set to "FEET". This was changed to "METERS. The heights are not affected because the ingest recognizes the raw data units and automatically converts to meters. |
| Measurements: | sgpvceil25kC1.b1:
|