DQR ID | Subject | Data Streams Affected |
---|---|---|
D100716.1 | GRW/MWR/M1 - Incorrect instrument computer set-up | grwmwrlosM1.b1 |
D100729.5 | GRW/WACR/M1 - Reprocessed: Reflectivity and Height Offsets | grwwacrspeccmaskcopolM1.a0, grwwacrM1.b1 |
D100830.1 | GRW/MWR/M1 - Erratic brightness temperature | grwmwrlosM1.b1 |
D100909.1 | GRW/MWRP/M1 - Reprocessed: Updated calibration coefficients | grwmwrpM1.b1 |
D120301.1 | GRW/WACR/M1 - Transmit power drop outs | grwwacrspeccmaskcopolM1.a0, grwwacrM1.b1 |
D130718.8 | GRW/TSI/M1 - Data processing problem | grwtsiskycoverM1.b1 |
D130725.3 | GRW/WACR/M1 - Incorrect value for antenna_altitude global attribute | grwwacrspeccmaskcopolM1.a0 |
D130807.5 | GRW/TSI/M1 - Reprocessing Notice (RID 951) | grwtsiskycoverM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/2010 | 1800 | 08/09/2010 | 1400 |
Subject: | GRW/MWR/M1 - Incorrect instrument computer set-up |
DataStreams: | grwmwrlosM1.b1 |
Description: | Starting late on 07/11 the instrument began to have very brief (< 1 min) data outages every few hours. By 07/12 data had become noticeably incorrect, particularly the PWV, LWP, TB23, and TB31. At ~17 Z on 0713 the missing data / no data available flags became more frequent. The problem was identified as improper settings of the instrument computer and was solved on 8/9. |
Measurements: | grwmwrlosM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2009 | 0000 | 01/06/2011 | 0800 |
Subject: | GRW/WACR/M1 - Reprocessed: Reflectivity and Height Offsets |
DataStreams: | grwwacrspeccmaskcopolM1.a0, grwwacrM1.b1 |
Description: | The instrument vendor informed us of a range (height) offset of 13 m and provided updated reflectivity calibration. All values reported for 'Reflectivity' were approximately 3 dB too low. In addition, the Reflectivity in the first and fourth range gates (starting from the surface) needed to be further corrected by an additional 2.7 and -0.9 dB, respectively. The 'height' field values were 13.33 m too low. The data were reprocessed to correct these problems. The grwwacrM1.b1 data were reprocessed and archived in October 2010. The grwwacrspeccmaskcopolM1.a0 and grwwacrspeccmaskxpolM1.a0 data were reprocessed and archived in January 2012. |
Measurements: | grwwacrspeccmaskcopolM1.a0:
grwwacrM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2010 | 1200 | 08/09/2010 | 1400 |
Subject: | GRW/MWR/M1 - Erratic brightness temperature |
DataStreams: | grwmwrlosM1.b1 |
Description: | Around 12 Z on 7/20 both the PWV and 23.8 GHz brightness temp values began to diverge from those of the MWRP. By 7/22 both the LWP and 31.4 GHz brightness temp had followed suit. At 0600 Z on 7/22 multiple (10-20), brief (<=1 min) data outages began appearing hourly. The problem persisted intermittently until 8/9. On 8/9, changes in the settings of the computer restored the proper functionality of the MWR software. |
Measurements: | grwmwrlosM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2010 | 0000 | 09/08/2010 | 1532 |
Subject: | GRW/MWRP/M1 - Reprocessed: Updated calibration coefficients |
DataStreams: | grwmwrpM1.b1 |
Description: | On 9/8/2010 the calibration of of the K-band channels was updated. This caused a slight decrease of the retrieved liquid water path. Updated calibrations have been applied to data from 7/1-9/8. The LWP was decreased slightly as a result of the recalibration. Reprocessed data were archived in November 2010. |
Measurements: | grwmwrpM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/27/2009 | 1627 | 10/19/2010 | 1237 |
Subject: | GRW/WACR/M1 - Transmit power drop outs |
DataStreams: | grwwacrspeccmaskcopolM1.a0, grwwacrM1.b1 |
Description: | At approximately 16:27 GMT on 20090727, txpower began intermittently dropping out and reporting slightly negative values. This issue continued intermittently through 20090807 when it stopped occurring. The problem resumed 20091006 and continued to occur on a daily basis until the monitor detector was replaced 20101019. The transmit power as measured by the detector after replacement was approximately 1.3 dB less than when it failed. Reflectivity measurements have a +0/-1.3 dBZ of additional uncertainty for this period of time. |
Measurements: | grwwacrspeccmaskcopolM1.a0:
grwwacrM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/14/2009 | 0000 | 01/05/2011 | 2359 |
Subject: | GRW/TSI/M1 - Data processing problem |
DataStreams: | grwtsiskycoverM1.b1 |
Description: | Values of count_opaque and count_thin are reals but should be integers (units = pixels). |
Measurements: | grwtsiskycoverM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2009 | 1813 | 10/06/2011 | 0859 |
Subject: | GRW/WACR/M1 - Incorrect value for antenna_altitude global attribute |
DataStreams: | grwwacrspeccmaskcopolM1.a0 |
Description: | The global attribute antenna_altitude is incorrect. The correct value should be 3.8608 m. This is the height of the WACR antenna above the ground. The value is used, along with site altitude, in converting heights above MSL to range above the radar antenna. |
Measurements: | grwwacrspeccmaskcopolM1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2010 | 0000 | 01/05/2011 | 2359 |
Subject: | GRW/TSI/M1 - Reprocessing Notice (RID 951) |
DataStreams: | grwtsiskycoverM1.b1 |
Description: | See below for details of reprocessing that was completed on 20140922. Original DQR category: 5 (Transparent - Does not affect quality). ----------------------------------------------------------- The units of global attributes region_sun_radius and region_zenith_radius should be degrees, not pixels. |
Measurements: | grwtsiskycoverM1.b1:
|