| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D041027.1 | NSA/MWRP/C1 - Missing data | nsamwrpC1.b1 |
| D080319.1 | NSA/MWRP/C1 - Hardware failure- Intermittent data | nsamwrpC1.b1 |
| D080319.3 | NSA/MWRP/C1 - Thermal instability- TKnd test | nsamwrpC1.b1 |
| D080325.1 | NSA/METTWR/C1 - Intermittent missing data | nsamettwr4hC1.b1 |
| D080326.2 | NSA/METTWR/C1 - 2m Wind Direction Sensor Freezing | nsamettwr4hC1.b1 |
| D080408.2 | NSA/METTWR/C1 - CMH Intake Fan Failure | nsamettwr4hC1.b1 |
| D080409.2 | NSA/MWRP/C1 - Spare radiometer installed | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
| D080421.1 | NSA/MWRP/C1 - Radiometer in mixed scanning-zenith mode | nsamwrpC1.b1 |
| D080523.3 | NSA/MWRP/C1 - Intermittent data | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
| D080523.4 | NSA/MWRP/C1 - Reprocess: LN2 calibration | nsamwrpC1.b1 |
| D080523.5 | NSA/MWRP/C1 - Increased RF intereference | nsamwrpC1.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/21/2004 | 0925 | 02/23/2004 | 2238 |
| 10/07/2004 | 0859 | 10/27/2004 | 1237 |
| 11/20/2004 | 0039 | 11/22/2004 | 1851 |
| 04/10/2005 | 0000 | 04/11/2005 | 1622 |
| 09/04/2005 | 0531 | 09/06/2005 | 1857 |
| 09/10/2005 | 0052 | 09/12/2005 | 1830 |
| 09/21/2005 | 1805 | 10/12/2005 | 2311 |
| 06/23/2006 | 1800 | 08/08/2006 | 2250 |
| 08/11/2006 | 2359 | 08/14/2006 | 1454 |
| 10/09/2006 | 2101 | 10/11/2006 | 1733 |
| 01/05/2007 | 2358 | 01/08/2007 | 2019 |
| 02/28/2007 | 2309 | 03/05/2007 | 0027 |
| 07/13/2007 | 1838 | 12/08/2007 | 0125 |
| 01/04/2008 | 2357 | 01/06/2008 | 1903 |
| 02/16/2008 | 1818 | 02/21/2008 | 0006 |
| 02/23/2008 | 1005 | 02/26/2008 | 2320 |
| 03/12/2008 | 0143 | 04/09/2008 | 1540 |
| 04/10/2008 | 1840 | 04/14/2008 | 1657 |
| 04/18/2008 | 2258 | 04/21/2008 | 1422 |
| 04/27/2008 | 1846 | 04/29/2008 | 0525 |
| 05/01/2008 | 0328 | 05/28/2008 | 2241 |
| 10/14/2008 | 1659 | 02/13/2009 | 2234 |
| Subject: | NSA/MWRP/C1 - Missing data |
| DataStreams: | nsamwrpC1.b1 |
| Description: | Data are missing and unrecoverable. |
| Measurements: | nsamwrpC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/29/2008 | 0000 | 03/12/2008 | 0000 |
| Subject: | NSA/MWRP/C1 - Hardware failure- Intermittent data |
| DataStreams: | nsamwrpC1.b1 |
| Description: | Data are intermittent during this time due to a failure of the analog board. The calibration of V-band data may have slightly drifted due to power outages. |
| Measurements: | nsamwrpC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/01/2008 | 0000 | 03/12/2008 | 0000 |
| Subject: | NSA/MWRP/C1 - Thermal instability- TKnd test |
| DataStreams: | nsamwrpC1.b1 |
| Description: | During this time the radiometer was thermally unstable . The noise diode physical temperature had sudden drops of more than 5 degree in several ccasions between 2/1 and 2/11. On 2/12 the radiometer temperature set point was lowered of about 10 degree as a test. On 2/27 a new analog board was installed in the instrument. Data after 2/27 show a slight change in calibration. |
| Measurements: | nsamwrpC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/14/2008 | 2012 | 03/31/2008 | 0900 |
| Subject: | NSA/METTWR/C1 - Intermittent missing data |
| DataStreams: | nsamettwr4hC1.b1 |
| Description: | Intermittent failure of the CMH to communicate with the logging system occurred on a daily basis. This problem occurred anywhere from 4 to 8 hrs. Problem began after maintenance to replace failing aspirator fan on 03/13/2008. |
| Measurements: | nsamettwr4hC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/05/2008 | 0000 | 03/27/2008 | 1730 |
| Subject: | NSA/METTWR/C1 - 2m Wind Direction Sensor Freezing |
| DataStreams: | nsamettwr4hC1.b1 |
| Description: | The 2m wind direction was failing. It began to exhibit instances of no movement suggesting it was frozen. After some time it began to make erratic measurements compared to the co-located Ultrasonic and compared to the directions at the other levels. |
| Measurements: | nsamettwr4hC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/07/2008 | 1200 | 03/13/2008 | 2345 |
| Subject: | NSA/METTWR/C1 - CMH Intake Fan Failure |
| DataStreams: | nsamettwr4hC1.b1 |
| Description: | The CMH intake fan failed causing the dew point and temp data to be incorrect. If users need only T/RH and derived variables they can use the 2m data collected using the HMP-45D probes. CMH data are unrecoverable. |
| Measurements: | nsamettwr4hC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/09/2008 | 1539 | 05/01/2008 | 0300 |
| Subject: | NSA/MWRP/C1 - Spare radiometer installed |
| DataStreams: | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
| Description: | A spare radiometer was provided by Radiometrics while they try to fix our MWRP. The spare radiometer is of the same family as the one we have in Barrow and it will stay at the site until our radiometer is repaired. A LN2 calibration will be performed next week. |
| Measurements: | nsamwrprawC1.00:
nsamwrpC1.b1:
nsamwrpC1.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/08/2008 | 0000 | 04/21/2008 | 1420 |
| Subject: | NSA/MWRP/C1 - Radiometer in mixed scanning-zenith mode |
| DataStreams: | nsamwrpC1.b1 |
| Description: | After installing the spare radiometer (D080409.2), the data started to be intermittent and the software froze several times. To test if the problem was due to the scanning procedure used with the other radiometer, the instrument was run with a zenith-only procedure at times and with the usual scanning procedure at restart. When restarted with the scanning procedure the software had problems, so it was decided to run the spare instrument only with the zenith-viewing mode until our instrument comes back. The quality of the data should be unaffected. The only difference is that only data collected at 90 degree angle will be available until our instrument comes back. |
| Measurements: | nsamwrpC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/09/2008 | 1539 | 05/01/2008 | 0300 |
| Subject: | NSA/MWRP/C1 - Intermittent data |
| DataStreams: | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
| Description: | A spare radiometer was installed a the site to substitute the malfunctioning radiometer (see DQRs D080409.2 and D080421.1). During this time the spare radiometer had problems starting and was stopping collection suddenly. Data during this time are very intermittent with large gaps. |
| Measurements: | nsamwrprawC1.00:
nsamwrpC1.b1:
nsamwrpC1.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/09/2008 | 1539 | 05/01/2008 | 0300 |
| Subject: | NSA/MWRP/C1 - Reprocess: LN2 calibration |
| DataStreams: | nsamwrpC1.b1 |
| Description: | On 4/9 a spare radiometer was installed at the site. On 4/18 a LN2 calibration was conducted. Upon examination of the data it appeared that the LN2 calibration was generally successful, however the 30-GHz channel was not calibrated properly. New calibration coefficients for all K-band channels were derived and data for the whole month should be reprocessed with these newly derived coefficients. I will provide the new configuration file. An explanation of the effects of the poor calibration is given in the Instrument Mentor Monthly Summary report. The poor calibration affected the LWP in particular. Re-calibration will correct the problem. |
| Measurements: | nsamwrpC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/09/2008 | 1539 | 05/01/2008 | 0300 |
| Subject: | NSA/MWRP/C1 - Increased RF intereference |
| DataStreams: | nsamwrpC1.b1 |
| Description: | The spare radiometer experienced increased levels of RF interference. The interference is prominent on the 30-GHz channel and LWP retrievals that appear particularly noisy. |
| Measurements: | nsamwrpC1.b1:
|