DQR ID | Subject | Data Streams Affected |
---|---|---|
D041214.1 | NSA/METTWR/C1 - All 10m level Data Missing | nsamettwr4hC1.b1 |
D050110.3 | NSA/METTWR/C1 - Instrument problem, Contamination, False signal | nsamettwr4hC1.b1 |
D050124.2 | NSA/METTWR/C1 - CMH data intermittently poor | nsamettwr4hC1.b1 |
D050527.2 | NSA/METTWR/C1 - Incorrect Maximum for Precip Values | nsamettwr4hC1.b1 |
D050727.1 | NSA/METTWR/C1 - CMH mirror dirty | nsamettwr4hC1.b1 |
D050829.2 | NSA/METTWR/C1 - Tower Maintenance | nsamettwr4hC1.b1 |
D050906.1 | NSA/METTWR/C1 - CMH and PWS data missing | nsamettwr4hC1.b1 |
D050920.5 | NSA/METTWR/C1 - CMH Data Missing | nsamettwr4hC1.b1 |
D051011.1 | NSA/METTWR/C1 - 2m wind Direction Sensor Failed | nsamettwr4hC1.b1 |
D051025.2 | NSA/METTWR/C1 - Data 1-minute behind | nsamettwr4hC1.b1 |
D051101.4 | NSA/METTWR/C1 - Reprocess: Wind direction data incorrect | nsamettwr4hC1.b1 |
D060119.1 | NSA/METTWR/C1 - CMH Data Not Representative | nsamettwr4hC1.b1 |
D060215.4 | NSA/METTWR/C1 - CMH Data missing | nsamettwr4hC1.b1 |
D060220.1 | NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrect | nsamettwr4hC1.b1 |
D060220.2 | NSA/METTWR/C1 - PWS data missing due to blizzard | nsamettwr4hC1.b1 |
D060224.1 | NSA/METTWR/C1 - 2m Wind Speed Artificially Low | nsamettwr4hC1.b1 |
D060303.2 | NSA/METTWR/C1 - CMH temp inaccurate | nsamettwr4hC1.b1 |
D060323.1 | NSA/METTWR/C1 - 10m Wind Speed Low | nsamettwr4hC1.b1 |
D060323.2 | NSA/METTWR/C1 - 10m Wind Speed Intermittently Low | nsamettwr4hC1.b1 |
D060323.3 | NSA/METTWR/C1 - 40m Wind Speeds Intermittently Low | nsamettwr4hC1.b1 |
D060323.4 | NSA/METTWR/C1 - 20m Wind Speeds Intermittently Low | nsamettwr4hC1.b1 |
D060426.5 | NSA/METTWR/C1 - CMH Data Missing | nsamettwr4hC1.b1 |
D060426.6 | NSA/METTWR/C1 - CMH Data Suspect | nsamettwr4hC1.b1 |
D060526.3 | NSA/METTWR/C1 - Wind direction measurements suspect | nsamettwr4hC1.b1 |
D060817.4 | NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPa | nsamettwr4hC1.b1 |
D060913.6 | NSA/METTWR/C1 - Present Weather Sensor data missing or incorrect due to calibration. | nsamettwr4hC1.b1 |
D061003.1 | NSA/METTWR/C1 - All data from 10m Level Missing | nsamettwr4hC1.b1 |
D061012.2 | NSA/METTWR/C1 - Missing CMH data | nsamettwr4hC1.b1 |
D061023.1 | NSA/METTWR/C1 - 10m level loss of power | nsamettwr4hC1.b1 |
D061025.1 | NSA/METTWR/C1 - 2m T/RH probe aspirator fan failed | nsamettwr4hC1.b1 |
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 |
D070529.1 | NSA/METTWR/C1 - 20m RH Data Questionable | nsamettwr4hC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2004 | 2002 | 04/26/2005 | 1902 |
Subject: | NSA/METTWR/C1 - All 10m level Data Missing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | After prolonged power outage and many power spikes during the outage all data from the 10m level are missing. Blown fuse on the power supply was replaced once the temperatures warmed enough to allow the lowering of the tower carriages. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2005 | 1545 | 01/10/2005 | 1110 |
Subject: | NSA/METTWR/C1 - Instrument problem, Contamination, False signal |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Data in error due to heavy snow during blizzard conditions. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2005 | 2213 | 01/20/2005 | 2100 |
Subject: | NSA/METTWR/C1 - CMH data intermittently poor |
DataStreams: | nsamettwr4hC1.b1 |
Description: | CMH aspirator fan intermittently failed causing higher than actual temperature and dew point readings. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2003 | 0000 | 05/26/2005 | 1014 |
Subject: | NSA/METTWR/C1 - Incorrect Maximum for Precip Values |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The max values for cumulative rain sum of 99 mm and the rain rate of 999 mm/hr are incorrect. In communication with the manufacturer it has been found that the manual was in error. The actual max values of the cumulative rain sum is 99.99 mm and the rain rate is 999.99 mm/hr. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/28/2005 | 0630 | 07/19/2005 | 1934 |
Subject: | NSA/METTWR/C1 - CMH mirror dirty |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The CMH mirror was in need of cleaning. The data is suspect from 05/28/05 through 07/04/05 as intermittently poor readings occurred. After 07/04/05 the data was incorrect as the mirror was excessively dirty. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/22/2005 | 1800 | 08/27/2005 | 0148 |
Subject: | NSA/METTWR/C1 - Tower Maintenance |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The booms of the tower were lowered for sensor replacement, calibration, and tower maintenance. During the maintenance and sensor replacement data are frequently missing. Where data are available, they are not or may not be representative because the booms were at the base of the tower during the time period listed. The chilled mirror measurements were not affected by the maintenance. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/05/2005 | 2221 | 09/06/2005 | 1918 |
Subject: | NSA/METTWR/C1 - CMH and PWS data missing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The CMH and PWS data are missing and unrecoverable. A GFCI was tripped causing a loss of power to these sensors. The CMH came back online at 1916 GMT and the PWS came back online at 1918 GMT. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/19/2005 | 1416 | 09/21/2005 | 2203 |
Subject: | NSA/METTWR/C1 - CMH Data Missing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Data from CMH was missing due to a corroded RS-232 9-Pin connector. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2005 | 1620 | 10/11/2005 | 0012 |
Subject: | NSA/METTWR/C1 - 2m wind Direction Sensor Failed |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 2m cup wind direction flat lined at 236 degrees. Sensor failed. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2003 | 0000 | 09/14/2005 | 1420 |
Subject: | NSA/METTWR/C1 - Data 1-minute behind |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Data from the Barometer, Chilled Mirror Hygrometer and the Present Weather Sensor were one-minute behind due to timing problems collecting data from the Serial Data Multiplexer that handled these sensors. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2003 | 0000 | 10/20/2005 | 1900 |
Subject: | NSA/METTWR/C1 - Reprocess: Wind direction data incorrect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Wind direction data is off by 30 degrees for all wind sensors. The 40-m tower was misaligned to true north. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/2006 | 0120 | 01/09/2006 | 2330 |
Subject: | NSA/METTWR/C1 - CMH Data Not Representative |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The intake of the CMH was blocked with hoar frost. The temperatures measured by the chilled mirror and the temperature probe were not representative of the ambient conditions as a result. The RH data calculated from these values is incorrect also. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/15/2006 | 1204 | 02/15/2006 | 2222 |
Subject: | NSA/METTWR/C1 - CMH Data missing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | CMH dew point and temp data was missing. Since Dew Point and Temp data missing RH% value = 100% during outage. Corrosion on power plug was athe problem. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2006 | 1829 | 02/20/2006 | 0400 |
Subject: | NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The values collected from the ultrasonic wind sensor were intermittently incorrect. Heavy wet snow during blizzard condition was interfering with the ultrasonic readings. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2006 | 1632 | 02/20/2006 | 2137 |
Subject: | NSA/METTWR/C1 - PWS data missing due to blizzard |
DataStreams: | nsamettwr4hC1.b1 |
Description: | PWS was offline and data was missing. A blizzard consisting of heavy wet snow and strong winds caused snow impaction in the optics. The PWS reported missing data as it was unable to measure anything meaningful. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2006 | 2010 | 02/20/2006 | 0934 |
Subject: | NSA/METTWR/C1 - 2m Wind Speed Artificially Low |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 2m wind speed values were artificially low due to snow impaction during a heavy blizzard. The cup anemometer heaters could not keep up with the rapid deposition of snow. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/28/2006 | 0700 | 03/06/2006 | 2100 |
Subject: | NSA/METTWR/C1 - CMH temp inaccurate |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The CMH Temperature was consistently 4-7 degrees warmer than the 2M, 40M, 20M, and 10M temp. Intake fan failure; fan was replaced. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/02/2006 | 0500 | 01/06/2006 | 1745 |
01/14/2006 | 1202 | 01/23/2006 | 1140 |
Subject: | NSA/METTWR/C1 - 10m Wind Speed Low |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 10m wind speed values are too low due to ice accumulation on the cup anemometer. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/2006 | 1030 | 01/13/2006 | 0402 |
Subject: | NSA/METTWR/C1 - 10m Wind Speed Intermittently Low |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 10m wind speeds are intermittently too low due to ice accumulation on the cup anemometer. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2006 | 0600 | 01/13/2006 | 0402 |
01/26/2006 | 1602 | 01/27/2006 | 0516 |
02/03/2006 | 0020 | 02/05/2006 | 0540 |
Subject: | NSA/METTWR/C1 - 40m Wind Speeds Intermittently Low |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 40m wind speed values were too low due to ice accumulation on the cup anemometer. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/2006 | 0812 | 01/13/2006 | 0402 |
02/03/2006 | 0115 | 02/03/2006 | 1603 |
Subject: | NSA/METTWR/C1 - 20m Wind Speeds Intermittently Low |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 20m wind speeds were artificially low due to ice accumulation on the cup anemometer. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/23/2006 | 2250 | 03/25/2006 | 0036 |
Subject: | NSA/METTWR/C1 - CMH Data Missing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | CMH data was missing due to it being removed for maintenance. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/2006 | 0037 | 04/11/2006 | 1811 |
Subject: | NSA/METTWR/C1 - CMH Data Suspect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | CMH data was suspect due to incorrect calibration caused by procedural errors. The procedures were corrected and a new calibration completed. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2006 | 0300 | 06/01/2006 | 0000 |
Subject: | NSA/METTWR/C1 - Wind direction measurements suspect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | 20m wind direction standard deviation was 0 degrees for extended periods of time. This suggests the wind vane was icing up. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2003 | 0000 | 07/12/2006 | 1608 |
Subject: | NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPa |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Barometric pressure data was converted from hPa to kPa in order to standardize the measurement units among ARM sites and to conform to accepted standard units determined by the scientific community. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/13/2006 | 2145 | 06/13/2006 | 2335 |
Subject: | NSA/METTWR/C1 - Present Weather Sensor data missing or incorrect due to calibration. |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The Present Weather Sensor data was missing or incorrect due to calibration checks. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/2006 | 2234 | 10/04/2006 | 2347 |
Subject: | NSA/METTWR/C1 - All data from 10m Level Missing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The winch that lowers the tower booms failed. Manual testing of the motor and winch allowed the booms to be lowered briefly and then raised back into position. A heavy freezing rain/icing event added extra weight to the booms. This extra weight was suspected as the cause as to why the 10m boom became disconnected. After a new motor was installed and all booms were lowered and re-raised the 10m level came back on line. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2006 | 0351 | 10/14/2006 | 0038 |
Subject: | NSA/METTWR/C1 - Missing CMH data |
DataStreams: | nsamettwr4hC1.b1 |
Description: | CMH data are missing. Corrosion in the serial data line connections caused a loss of communication with the CMH. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/18/2006 | 1840 | 10/23/2006 | 2230 |
Subject: | NSA/METTWR/C1 - 10m level loss of power |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 10 meter instrument level lost power so all variables from this level are missing. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/18/2006 | 2240 | 10/23/2006 | 2230 |
Subject: | NSA/METTWR/C1 - 2m T/RH probe aspirator fan failed |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The aspirator fan for the 2m level T/RH probe failed. This caused higher than normal readings for temp and RH and artificially smoothed the data. |
Measurements: | 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 |
---|---|---|---|
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:
|