DQR ID | Subject | Data Streams Affected |
---|---|---|
D060928.4 | NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry | nsasondewnpnC1.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 |
D080512.1 | NSA/MWR/C1 - Spikes in air temperature readings | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D080611.1 | NSA/METTWR/C1 - 2m Datalogger Failed | nsamettwr4hC1.b1 |
D080612.1 | NSA/METTWR/C1 - CMH required Calibration | nsamettwr4hC1.b1 |
D080623.1 | NSA/MWR/C1 - Missing surface air temperature data | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D080731.1 | NSA/METTWR/C1 - 2m level data incorrect | nsamettwr4hC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/2006 | 0500 | 12/31/9999 | 2359 |
Subject: | NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry |
DataStreams: | nsasondewnpnC1.b1 |
Description: | The output precision of the following variables was increased 20060929: alt changed from 1m to 0.1m dp changed from 0.1degC to 0.01degC pres changed from 0.1 hPa to 0.01 hPa RH changed from 1%RH to 0.01%RH tdry changed from .1degC to 0.01degC Note that the increase in precision does not necessarily imply an increase in accuracy. Users are cautioned to continue to use their best scientific judgement when using these or any other data. |
Measurements: | nsasondewnpnC1.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 |
---|---|---|---|
04/02/2008 | 0000 | 06/04/2008 | 2200 |
Subject: | NSA/MWR/C1 - Spikes in air temperature readings |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | During this month there are occasional negative spikes in the Tkair variable. The problem may be corrosion in the temperature sensor or the infiltration of water from melting snow. The dewblower was replaced and a new sensor installed |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2008 | 2200 | 06/20/2008 | 0200 |
Subject: | NSA/MWR/C1 - Missing surface air temperature data |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | Some wires in the dewblower were not correctly configured. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/30/2008 | 1141 | 08/03/2008 | 2359 |
Subject: | NSA/METTWR/C1 - 2m level data incorrect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 2m data for temp, RH, dew point, wind speed wind direction & vapor pressure were incorrect. The voltage values for the datalogger at that level were reporting as 60V with excursions to 100V. These values should have damaged the logger at that level. After an extended power outage on 08/04 the data all became reasonable. There is no explanation as to the cause of this failure. |
Measurements: | nsamettwr4hC1.b1:
|