| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D020703.3 | NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures | nsaorgC1.a1 |
| D991129.1 | NSA/METOWER - Reprocess: Incorrect NSA wind direction minima and maxima | nsametC1.00, nsamettwrC1.a1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/20/1998 | 0101 | 03/31/2001 | 2359 |
| Subject: | NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures |
| DataStreams: | nsaorgC1.a1 |
| Description: | The ORG reports precipitation rates that are more than 2 orders of magnitude greater than those reported by the present weather sensor when the temperature drops below -25 C. Examples of this error can be seen in the data for January 11-13, 2000, however the problem is not isolated to these days. A drift occurs when temps are in the range of -25 C to -40 C that exceeds the maximum drift allowed/expected for the instrument. The drift is then reported as precipitation. The manufacturer of the instrument has not yet been able to identify a fix for the problem. |
| Measurements: | nsaorgC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/24/1998 | 0000 | 11/29/1999 | 2000 |
| Subject: | NSA/METOWER - Reprocess: Incorrect NSA wind direction minima and maxima |
| DataStreams: | nsametC1.00, nsamettwrC1.a1 |
| Description: | From the time of installation of the NSA C1 Met-tower system on 24 MAR 1998 until 29 NOV 1999 all wind direction minima and maxima were reported as raw (unrotated) data. In order to obtain correct minima and maxima 30 deg must be subtracted from the value. All mean wind directions were computed from rotated (corrected) data. |
| Measurements: | nsamettwrC1.a1:
nsametC1.00:
|