DQR ID | Subject | Data Streams Affected |
---|---|---|
D041027.1 | NSA/MWRP/C1 - Missing data | nsamwrpC1.b1 |
D080115.1 | NSA/MWRP/C1 - Radiometer thermally unstable | nsamwrpC1.b1 |
D080211.4 | NSA/MWRP/C1 - Radiometer thermally unstable | nsamwrpC1.b1 |
D080319.1 | NSA/MWRP/C1 - Hardware failure- Intermittent data | nsamwrpC1.b1 |
D080319.3 | NSA/MWRP/C1 - Thermal instability- TKnd test | nsamwrpC1.b1 |
D080409.2 | NSA/MWRP/C1 - Spare radiometer installed | nsamwrpC1.b1, nsamwrprawC1.00, nsamwrpC1.00 |
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 |
D080710.2 | NSA/MWRP/C1 - Reprocessed: LN2 calibrations applied | nsamwrpC1.b1 |
D080922.2 | NSA/MWRP/C1 - V-band noise diode failure | nsamwrpC1.b1 |
D081107.1 | NSA/MWRP/C1 - Incorrect V-band data | nsamwrpC1.b1 |
D090407.1 | NSA/MWRP/C1 - Reprocessed: Negative bias in LWP | nsamwrpC1.b1 |
D090826.1 | NSA/MWRP/C1 - Reprocess: V-band channels too cold | nsamwrpC1.b1 |
D100330.1 | NSA/MWRP/C1 - Reprocessed: LN2 calibration | nsamwrpC1.b1 |
D100623.1 | NSA/MWRP/C1 - IRT readings bias | nsamwrpC1.b1 |
D101109.1 | NSA/MWRP/C1 - Reprocess: Incorrect calibration | nsamwrpC1.b1 |
D110201.2 | NSA/MWRP/C1 - Calibration drift | nsamwrpC1.b1 |
D110511.1 | NSA/MWRP/C1 - Incorrect brightness temperatures | nsamwrpC1.b1 |
D120130.1 | NSA/MWRP/C1 - Reprocess: Incorrect calibration coefficients | nsamwrpC1.b1 |
D120221.1 | NSA/MWRP/C1 - Rapid calibration drift | nsamwrpC1.b1 |
D120328.1 | NSA/MWRP/C1 - Questionable data | nsamwrpC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
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 |
02/01/2011 | 1800 | 04/04/2011 | 1300 |
04/09/2011 | 0000 | 04/11/2011 | 1400 |
04/28/2011 | 0000 | 10/19/2011 | 0000 |
04/10/2005 | 0000 | 04/11/2005 | 1622 |
11/20/2004 | 0039 | 11/22/2004 | 1851 |
10/07/2004 | 0859 | 10/27/2004 | 1237 |
02/21/2004 | 0925 | 02/23/2004 | 2238 |
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 |
---|---|---|---|
12/21/2007 | 0000 | 12/23/2007 | 0000 |
Subject: | NSA/MWRP/C1 - Radiometer thermally unstable |
DataStreams: | nsamwrpC1.b1 |
Description: | Between Dec 21 and Dec 23 the external temperature dropped to - 38 C. This caused a problem with the stability of the noise diode mount temperature and consequent problem with calibration. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2008 | 0000 | 01/31/2008 | 2300 |
Subject: | NSA/MWRP/C1 - Radiometer thermally unstable |
DataStreams: | nsamwrpC1.b1 |
Description: | During January the radiometer was thermally unstable during several days of cold weather. The worst days of thermal instability were between Jan 12 and Jan 17. |
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 |
---|---|---|---|
04/09/2008 | 1539 | 05/01/2008 | 0300 |
Subject: | NSA/MWRP/C1 - Spare radiometer installed |
DataStreams: | nsamwrpC1.b1, nsamwrprawC1.00, nsamwrpC1.00 |
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2008 | 0000 | 07/18/2008 | 1950 |
Subject: | NSA/MWRP/C1 - Reprocessed: LN2 calibrations applied |
DataStreams: | nsamwrpC1.b1 |
Description: | The V-band measurements were incorrect. The quantities affected were the temperature and humidity profiles. The instrument was re-calibrated on July 18. The new calibrations have been applied to the data for this time period. The reprocessed data were archived in January 2009. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/05/2008 | 0000 | 10/14/2008 | 1700 |
Subject: | NSA/MWRP/C1 - V-band noise diode failure |
DataStreams: | nsamwrpC1.b1 |
Description: | The V-band noise diode is showing signs of instability. Starting about August 5 the comparison of brightness temperatures with model showed an increased divergence resulting from a downward trend in the brightness temperatures of frequencies > 50 GHz. Disregard brightness temperatures and retrieved products associated with the V-band channels. These include all profiles. Integrated water vapor and liquid water path are not affected. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/28/2008 | 2200 | 06/30/2008 | 2359 |
Subject: | NSA/MWRP/C1 - Incorrect V-band data |
DataStreams: | nsamwrpC1.b1 |
Description: | The V-band channels show a drift during this time. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/13/2009 | 0000 | 04/15/2009 | 1950 |
Subject: | NSA/MWRP/C1 - Reprocessed: Negative bias in LWP |
DataStreams: | nsamwrpC1.b1 |
Description: | After the radiometer was installed at the site following extensive refurbishing the retrieved LWP had a large negative bias (~-0.07 mm). The calibration coefficients were modified and that resolved the problem. Data for February, March and part of April were reprocessed with the revised calibrations and archived in July. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2009 | 1817 | 08/26/2009 | 1950 |
Subject: | NSA/MWRP/C1 - Reprocess: V-band channels too cold |
DataStreams: | nsamwrpC1.b1 |
Description: | The calibrations of 7/20 and 7/29 were slightly affected by high humidity at the site. As a result the V-band channels were calibrated too cold. On 8/26 I modified the mp.cfg file and reinstated the calibration coefficients derived on 3/20/2009. Data between 7/20 and 8/26 will be reprocessed with one set of calibration coefficients. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2010 | 0000 | 03/05/2010 | 2200 |
Subject: | NSA/MWRP/C1 - Reprocessed: LN2 calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | The instrument was calibrated on 3/5/2010. These latest calibration coefficients have been applied to February data as well to mitigate the high bias in LWP observed in February. Reprocessed data were archived April 2010. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/07/2010 | 0700 | 06/16/2010 | 1845 |
Subject: | NSA/MWRP/C1 - IRT readings bias |
DataStreams: | nsamwrpC1.b1 |
Description: | The MWRP IRT appeared to not be reaching its lower limit (-50 C / 223.15 K). The readings stayed around 230 K although the sky was clear. On 6/16 the site technicians noticed that the gold mirror was scratched and appeared to have a deposit on it. The mirror was replaced and on 6/17 the lens was cleaned. These actions solved the problem. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/2010 | 0000 | 11/15/2010 | 2113 |
Subject: | NSA/MWRP/C1 - Reprocess: Incorrect calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | The calibration of the MWRP drifted starting on September 21. The drift caused a negative LWP. On 10/21 I modified the calibration of the 30 GHz channel in an attempt to correct for the negative bias in LWP. The change in the calibration however caused an excessive increase in the PWV retrievals. The original calibration values were reinstated on 10/29. I then recomputed the temperature coefficients as well as the noise diode injection temperature from tip curves and uploaded the new values on Nov 15 2010. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/2010 | 0000 | 02/01/2011 | 1800 |
Subject: | NSA/MWRP/C1 - Calibration drift |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer showed increased drift in the K-band calibration. Several attempts to correct for the drift did not return the expected result. Instrument was removed from service 20110201 and returned to vendor for repair. Data are erratic; data use during the indicated time is not recommended. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/04/2011 | 1300 | 04/27/2011 | 1100 |
Subject: | NSA/MWRP/C1 - Incorrect brightness temperatures |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer was reinstalled on 4/3/2011 but the 30 GHz data immediately appeared extremely noisy. The problem appears related to noise diode instability. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/19/2011 | 0000 | 01/14/2012 | 0600 |
Subject: | NSA/MWRP/C1 - Reprocess: Incorrect calibration coefficients |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer data need to be reprocessed with new calibrations. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/2012 | 0600 | 02/03/2012 | 2300 |
Subject: | NSA/MWRP/C1 - Rapid calibration drift |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer calibration was rapidly drifting. Brightness temperatures as well as retrievals are incorrect. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/26/2012 | 0000 | 03/23/2012 | 2359 |
Subject: | NSA/MWRP/C1 - Questionable data |
DataStreams: | nsamwrpC1.b1 |
Description: | The calibration was showing a noticeable temperature dependence that was not corrected by the calibration coefficients. Between 2/26 and 3/23 the quality of the data and of the retrievals is degraded |
Measurements: | nsamwrpC1.b1:
|