DQR ID | Subject | Data Streams Affected |
---|---|---|
D010202.2 | NSA/MWR/C1 - negative sky brightness temperatures | nsamwrlosC1.a1, nsamwrlosC1.b1 |
D020823.36 | NSA/MWR/C1 - Data spikes, possibly due to cleaning events | nsamwrlosC1.a1, nsamwrlosC1.b1 |
D030312.6 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | nsamwrlosC1.a1, nsamwrlosC1.b1 |
D030822.7 | NSA/MWR/C1 - min/max/delta values incorrect | nsamwrlosC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/03/2000 | 0000 | 05/24/2000 | 1800 |
Subject: | NSA/MWR/C1 - negative sky brightness temperatures |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | The data exhibit occasional negative sky brightness temperatures. The problem was corrected when the site operator cleaned the cable connectors and coated the terminals with dielectric grease. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1998 | 1800 | 12/16/1998 | 1815 |
10/25/1999 | 1800 | 10/25/1999 | 1810 |
11/04/1999 | 1900 | 11/04/1999 | 1910 |
12/15/1999 | 2140 | 12/15/1999 | 2210 |
02/29/2000 | 1850 | 02/29/2000 | 1900 |
04/04/2000 | 1800 | 04/04/2000 | 1830 |
04/06/2000 | 1815 | 04/06/2000 | 1830 |
04/23/2000 | 0810 | 04/23/2000 | 0830 |
05/16/2000 | 0430 | 05/16/2000 | 0500 |
05/16/2000 | 0630 | 05/16/2000 | 0700 |
05/16/2000 | 1530 | 05/16/2000 | 1545 |
05/24/2000 | 1800 | 05/24/2000 | 1815 |
Subject: | NSA/MWR/C1 - Data spikes, possibly due to cleaning events |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | Unreasonable spikes occurred, which may be due to cleaning of the instrument by the operator. Other cleaning events did not result in obvious data spikes and have not been included in this report. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/1999 | 1800 | 09/16/2002 | 1820 |
Subject: | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | Several related and recurring problems with the MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data, spikes in the data, negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program. Because these all initially appeared to be hardware-related problems, the instrument mentor and site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which did not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/02/1998 | 0000 | 02/08/2003 | 2359 |
Subject: | NSA/MWR/C1 - min/max/delta values incorrect |
DataStreams: | nsamwrlosC1.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | nsamwrlosC1.b1:
|