| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D050617.1 | PYE/MWR/M1 - Instrument computer locked up | pyemwrlosM1.b1 |
| D050726.4 | PYE/MWR/M1 - Reprocessed: Calibration corrected | pyemwrlosM1.b1, pyemwrtipM1.a1 |
| D050927.1 | PYE/MWR/M1 - New software version (4.15) installed | pyemwrlosM1.b1, pyemwrtipM1.a1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/09/2005 | 0000 | 06/09/2005 | 1500 |
| Subject: | PYE/MWR/M1 - Instrument computer locked up |
| DataStreams: | pyemwrlosM1.b1 |
| Description: | The MWR computer locked up and required a reboot at 00Z on June 9, 2005. When the program was restarted, water vapor, liquid path, and temps dropped to zero. They did not recover until 15Z the same day. |
| Measurements: | pyemwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/29/2005 | 0000 | 07/17/2005 | 2100 |
| Subject: | PYE/MWR/M1 - Reprocessed: Calibration corrected |
| DataStreams: | pyemwrlosM1.b1, pyemwrtipM1.a1 |
| Description: | On May 28 1:30 GMT the NFOV radiometer was placed in the field of view of the MWR tip calibration. Almost immediately calibration of the MWR was compromised resulting in incorrect brightness temperatures and overestimation of both PWV and LWP. On July 15 the NFOV radiometer was moved away from the MWR and the instantaneous calibration values jumped back to normal. The median values returned to normal on July 17 around 2100. The LOS data were reprocessed using interpolated values for the calibration coefficients. The reprocessed data are available from the ARM Archive effective December 7, 2005. NOTE: the format of the reprocessed data are slightly different than the format of the original data and the data available before and after the reprocessed data period. The quality of the data are not affected, just the format. The MWRTIP data can not be reprocessed and should be used with caution. |
| Measurements: | pyemwrtipM1.a1:
pyemwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/01/2005 | 0700 | 09/13/2005 | 1805 |
| Subject: | PYE/MWR/M1 - New software version (4.15) installed |
| DataStreams: | pyemwrlosM1.b1, pyemwrtipM1.a1 |
| Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 9/13/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
| Measurements: | pyemwrtipM1.a1:
pyemwrlosM1.b1:
|