DQR ID | Subject | Data Streams Affected |
---|---|---|
D060307.4 | NIM/TSI/M1 - Reprocess: incorrect daily movies | nimtsimovieM1.a1 |
D060419.1 | NIM/TSI/M1 - Reprocess: Data processing problem | nimtsicldmaskM1.a1, nimtsiskycoverM1.b1 |
D060921.9 | NIM/TSI/M1 - Shadowband Misalignment | nimtsicldmaskM1.a1, nimtsimovieM1.a1, nimtsiskyimageM1.a1 |
D061006.1 | NIM/SKYRAD/M1 - Tracker inoperative | nimskyrad20sM1.a0, nimskyrad60sM1.b1, nimskyradM1.00 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/11/2006 | 0633 | 03/08/2006 | 2359 |
Subject: | NIM/TSI/M1 - Reprocess: incorrect daily movies |
DataStreams: | nimtsimovieM1.a1 |
Description: | Due to file management problems on the operating computer, the daily movie files are either missing, incomplete, or contain images from other days. |
Measurements: | nimtsimovieM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/2005 | 0000 | 09/19/2006 | 1729 |
Subject: | NIM/TSI/M1 - Reprocess: Data processing problem |
DataStreams: | nimtsicldmaskM1.a1, nimtsiskycoverM1.b1 |
Description: | Due to the high aerosol conditions at Niamey, the TSI appeared to be beyond the limits of processing the color JPEG image into cloud fraction values. Several attempts to adjust the sky filter values used to process the images did not yielded the desired results. The processed images indicate an opaque sky cover, even in the absence of clouds. The problem was corrected by removing the neutral density filter from the lens and re-adjusting the sky filter values. The data can be reprocessed. |
Measurements: | nimtsicldmaskM1.a1:
nimtsiskycoverM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/2006 | 1820 | 09/29/2006 | 0945 |
Subject: | NIM/TSI/M1 - Shadowband Misalignment |
DataStreams: | nimtsicldmaskM1.a1, nimtsimovieM1.a1, nimtsiskyimageM1.a1 |
Description: | From installation, the shadowband was positioned south at solar noon until the vernal equinox when it began to migrate counter-clockwise until reaching east 37 days later on 4/26 (about 9 days before mid-spring). The shadowband at solar noon continued to migrate until reaching its most northerly position (~15 deg) on the summer solstice (if everything was perfectly aligned, it probably would have been pointed north on this day). It then began to migrate clockwise and reached east again 56 days later on 8/16 (about 14 days after mid-summer). As expected, the shadowband reached its most southerly position on the autumnal equinox but was about 10 deg off of being due south. With the apparent alignment problem, I don't understand why the shadowband was mostly blocking the sun. When I started noticing this offset in May, I chose to leave it alone because I felt that adjusting the shadowband to where I thought it should be would cause it to not block the sun at either sunrise or sunset. The alignment was corrected on 9/29 (6 days after the day of the autumnal equinox). |
Measurements: | nimtsiskyimageM1.a1:
nimtsicldmaskM1.a1:
nimtsimovieM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/12/2006 | 1200 | 10/05/2006 | 1330 |
Subject: | NIM/SKYRAD/M1 - Tracker inoperative |
DataStreams: | nimskyrad20sM1.a0, nimskyrad60sM1.b1, nimskyradM1.00 |
Description: | Starting on 9/12 the NIM radiometer tracker drifted enough due to sinking supports and a drifting clock that the direct normal measurments (NIP) and the downwelling hemispheric diffuse shortwave measurments (8-48) were adversely affected in the afternoon hours. The shortwave hemispheric global instrument (PSP) and downelling hemispheric longwave shaded1 and shaded2 (PIR) are unaffected by this problem. The tracker problem greatly affected direct measurements and affected the diffuse measurement to a lesser extent. There are no redundant measurements for these instruments. However, during this time range the data collected before local noon (aprox 1140GMT) for all shortwave Skyrad instruments appear to be good. |
Measurements: | nimskyrad20sM1.a0:
nimskyrad60sM1.b1:
nimskyradM1.00:
|