DQR ID | Subject | Data Streams Affected |
---|---|---|
D061128.2 | NSA/METTWR/C1 - Wind direction sensor frozen | nsamettwr4hC1.b1 |
D061213.1 | NSA/METTWR/C1 - CMH Sensor Calibrated Incorrectly | nsamettwr4hC1.b1 |
D061213.2 | NSA/METTWR/C1 - 40m wind sensor heater failure | nsamettwr4hC1.b1 |
D070226.1 | NSA/METTWR/C1 - 40m Wind Direction Data Suspect | nsamettwr4hC1.b1 |
D070413.1 | NSA/METTWR/C1 - PWS Data Questionable | nsamettwr4hC1.b1 |
D070529.1 | NSA/METTWR/C1 - 20m RH Data Questionable | nsamettwr4hC1.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 |
D080611.1 | NSA/METTWR/C1 - 2m Datalogger Failed | nsamettwr4hC1.b1 |
D080612.1 | NSA/METTWR/C1 - CMH required Calibration | nsamettwr4hC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/2006 | 2336 | 11/27/2006 | 0253 |
Subject: | NSA/METTWR/C1 - Wind direction sensor frozen |
DataStreams: | nsamettwr4hC1.b1 |
Description: | After a power outage the 40m wind direction sensor was frozen. Data from this sensor was not representative of the true winds. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2006 | 1500 | 03/14/2007 | 0234 |
Subject: | NSA/METTWR/C1 - CMH Sensor Calibrated Incorrectly |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The CMH temp and DP were higher than the co-located T/RH probe at the 2m level. An incorrect calibration along with a failing thermistor caused the readings to be incorrect for both measured values Temp and Dew Point. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2006 | 0000 | 05/22/2007 | 2347 |
Subject: | NSA/METTWR/C1 - 40m wind sensor heater failure |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 40m wind direction became frozen at times. The values from the sensor were flat-lined (stdev = 0) much of the time and did not match sensors from other levels. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/20/2006 | 0030 | 11/27/2006 | 0254 |
12/08/2006 | 0125 | 12/14/2006 | 2229 |
12/16/2006 | 1545 | 12/21/2006 | 1105 |
12/23/2006 | 1612 | 01/18/2007 | 2357 |
01/20/2007 | 1357 | 01/29/2007 | 2140 |
Subject: | NSA/METTWR/C1 - 40m Wind Direction Data Suspect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 40m wind direction data was suspect due to icing on the vane or a failing shafter heater or a combination of both. The affected data can be easily seen on comparison plots with other levels data or by checking the standard deviation of the 40m wind direction. Any standard deviation of less than 0.10 degrees for the 40m level suggest a sluggish/ice affected sensor. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/2007 | 2326 | 10/10/2007 | 0004 |
Subject: | NSA/METTWR/C1 - PWS Data Questionable |
DataStreams: | nsamettwr4hC1.b1 |
Description: | There was a degradation in the PWS lenses. New lenses were installed on 08/28/2007 but a proper calibration was not conducted until 10/10/2007. Data during the listed time period should be used with caution. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/18/2006 | 0000 | 05/22/2007 | 2330 |
Subject: | NSA/METTWR/C1 - 20m RH Data Questionable |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 20m RH data was questionable at times. When the data appeared to be poor was when the 2m and 20m agreed better than the 20m and the 40m and/or 10m. |
Measurements: | nsamettwr4hC1.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 |
---|---|---|---|
06/09/2008 | 2319 | 06/11/2008 | 2222 |
Subject: | NSA/METTWR/C1 - 2m Datalogger Failed |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 2m temperature, wind speed, wind direction, and relative humidity were reporting the missing value (-9999). |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2008 | 1500 | 06/20/2008 | 1420 |
Subject: | NSA/METTWR/C1 - CMH required Calibration |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The Chilled Mirror was showing some signs of being out of calibration. Temperatures were at times higher than co-located temp probes and the dew point temperature values at times were not consistent with co-located RH sensors. |
Measurements: | nsamettwr4hC1.b1:
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