DQR ID | Subject | Data Streams Affected |
---|---|---|
D001107.2 | NSA/C1 data loss due to cut fiber optic cable | nsaorgC1.a1, nsapwsC1.a0, nsamettwrC1.a1 |
D011119.1 | NSA/PWS/C1 - Present Weather Sensor Calibration/Checks | nsapwsC1.a1, nsapwsC1.b1 |
D011119.2 | NSA/METTWR/C1 - Met Tower Data Incorrect During Calibrations/Changeouts | nsamettwrC1.a1, nsamettwrC1.b1 |
D011128.2 | NSA/PWS/C1 - Calibration drift | nsapwsC1.a1 |
D020402.2 | NSA/METTWR/C1 - C1 SPURIOUS INFORMATION IN DATA HEADER | nsamettwrC1.b1 |
D020402.3 | NSA/METTWR/C1 - C1 WIND SPEED DATA QUESTIONABLE | nsamettwrC1.a1, nsamettwrC1.b1 |
D020402.4 | NSA/METTWR/C1 - C1 WIND DIRECTION DATA SUSPECT | nsamettwrC1.a1, nsamettwrC1.b1 |
D020424.1 | NSA/METTWRC1 - METTWRCQ DATA REPORTED AS -9999 | nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1 |
D020424.2 | NSA/METTWRC1 - METTWRC1 NO DATA COLLECTED FROM TOWER | nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1 |
D020610.2 | NSA/METTWR/C1 - Wind Speed data intermittently bad | nsamettwrC1.a1, nsamettwrC1.b1 |
D020610.7 | NSA/METTWR/C1 - Data missing due to Power Failure | nsamettwrC1.a1, nsamettwrC1.b1 |
D020611.1 | NSA/METTIPTWR/C2 - Data missing due to Power Failure | nsametC2.00, nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
D021205.1 | NSA/BMET/C2 - NSA/METTIPTOWER/C2 - C2 MET DATA MISSING | nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
D030411.4 | NSA/C2 - Missing met, pws, snodep data due to comm error | nsapwsC2.a1, nsapwsC2.b1, nsasnodepC2.a1, nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
D030528.5 | NSA/METTWR/C1 - C1/METTWR PRESSURE DATA MISSING AND INCORRECT | nsamettwrC1.a1, nsamettwrC1.b1 |
D030613.1 | NSA/PWS/C1 - C1/BARROW PWS WORKING INTERMITTENTLY | nsapwsC1.a1, nsapwsC1.b1 |
D040719.2 | NSA/METTWR/C1 - power outage at 40m level | nsamettwr4hC1.b1 |
D040722.2 | NSA/METTWR/C1 - Chilled Mirror transmit logic board chipset unsuited for Arctic temperatures | nsamettwr4hC1.b1 |
D040722.3 | NSA/METTWR/C2 - Chilled Mirror grounding and timing issues | nsamettwr2hC2.b1 |
D040728.1 | NSA/METTWR/C1 - CMH Dew Point and RH data Incorrect | nsamettwr4hC1.b1 |
D040930.1 | NSA/METTWR/C1 - Instrument problem, Contamination, False signal | nsamettwr4hC1.b1 |
D041004.1 | NSA/METTWR/C2 - Data Incorrect during Maintenance | nsamettwr2hC2.b1 |
D041004.2 | NSA/METTWR/C2 - All Data Missing or Incorrect during Maintenance | nsamettwr2hC2.b1 |
D041004.3 | NSA/METTWR/C2 - PWS Data Suspect | nsamettwr2hC2.b1 |
D041011.2 | NSA/METTWR/C1 - 20m Temperature/RH Sensor Failing | nsamettwr4hC1.b1 |
D041020.1 | NSA/METTWR/C1 - Sonic - Instrument problem, Contamination, False signal | nsamettwr4hC1.b1 |
D041101.1 | NSA/METTWR/C1 - Instrument problem, Frosting/Condensation | nsamettwr4hC1.b1 |
D041112.1 | NSA/METTWR/C2 - Instrument problem | nsamettwr2hC2.b1 |
D041214.1 | NSA/METTWR/C1 - All 10m level Data Missing | nsamettwr4hC1.b1 |
D041216.3 | NSA/METTWR/C1 - Instrument problem | nsamettwr4hC1.b1 |
D041216.4 | NSA/METTWR/C1 - Reprocess: Incorrect windspeed units | nsamettwr4hC1.b1 |
D050110.3 | NSA/METTWR/C1 - Instrument problem, Contamination, False signal | nsamettwr4hC1.b1 |
D050112.1 | NSA/C1 - Site-wide power failure | nsamplC1.a1, nsamwrpC1.b1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaaerich1C1.b1, nsaaerich2C1.b1, nsammcrmomC1.b1, nsamettwr4hC1.b1, nsavceil25kC1.b1, nsatwrcam40mC1.a1, nsaaerisummaryC1.b1, nsaaeriengineerC1.b1, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindspecC1.a0 |
D050124.2 | NSA/METTWR/C1 - CMH data intermittently poor | nsamettwr4hC1.b1 |
D050224.1 | NSA/METTWR/C2 - Tower Lowered | nsamettwr2hC2.b1 |
D050527.2 | NSA/METTWR/C1 - Incorrect Maximum for Precip Values | nsamettwr4hC1.b1 |
D050527.3 | NSA/METTWR/C2 - Incorrect Maximum for Precip Values | nsamettwr2hC2.b1 |
D050603.2 | NSA/METTWR/C2 - CMH Data Missing During Calibration | nsamettwr2hC2.b1 |
D050727.1 | NSA/METTWR/C1 - CMH mirror dirty | nsamettwr4hC1.b1 |
D050829.1 | NSA/METTWR/C2 - Tower Lowered, Data Not Representative | nsamettwr2hC2.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 |
D060223.2 | NSA/METTWR/C2 - Wind speed values artificially low | nsamettwr2hC2.b1 |
D060223.3 | NSA/METTWR/C2 - CMH Data incorrect | nsamettwr2hC2.b1 |
D060223.4 | NSA/METTWR/C2 - PWS data incorrect | nsamettwr2hC2.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 |
D060406.2 | NSA/METTWR/C2 - CMH Intake Fan Failure | nsamettwr2hC2.b1 |
D060426.2 | NSA/METTWR/C2 - CMH Data Suspect | nsamettwr2hC2.b1 |
D060426.4 | NSA/METTWR/C2 - CMH Data Suspect | nsamettwr2hC2.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 |
D060818.1 | NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa | nsamettwr2hC2.b1 |
D060913.2 | NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance. | nsamettwr2hC2.b1 |
D060913.3 | NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance. | nsamettwr2hC2.b1 |
D060913.4 | NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance. | nsamettwr2hC2.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 |
D061128.1 | NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow | nsamettwr2hC2.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 |
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 |
D080731.1 | NSA/METTWR/C1 - 2m level data incorrect | nsamettwr4hC1.b1 |
D090331.2 | NSA/MET/C1 - Temp/RH/wind data questionable | nsametC1.b1, nsatwrC1.b1 |
D090331.3 | NSA/MET/C1 - PWS data missing due to snow impaction | nsametC1.b1 |
D090331.4 | NSA/MET/C1 - Wind data intermittent | nsametC1.b1, nsatwrC1.b1 |
D090331.5 | NSA/MET/C1 - CMH data missing | nsametC1.b1 |
D090630.1 | NSA/MET/C1 - Met data incorrect during calibration | nsametC1.b1, nsatwrC1.b1 |
D090630.2 | NSA/MET/C1 - PWS calibration | nsametC1.b1 |
D090630.3 | NSA/MET/C1 - CMH calibration | nsametC1.b1 |
D090710.1 | NSA/MET/C1 - 2m RH values incorrect | nsametC1.b1, nsatwrC1.b1 |
D091014.2 | NSA/TWR/C1 - 40m T/RH Sensor Failure | nsatwrC1.b1 |
D091201.2 | NSA/TWR/C1 - 40m and 20m Data Incorrect | nsatwrC1.b1 |
D100208.13 | NSA/MET/C1 - CMH and 10m winds failure | nsametC1.b1 |
D100208.14 | NSA/TWR/C1 - Wind sensor data failures | nsatwrC1.b1 |
D100504.1 | NSA/MET/C1 - CMH Data Missing | nsametC1.b1 |
D100709.1 | NSA/MET/C1 - CMH Sent to Vendor for Repair | nsametC1.b1 |
D101215.2 | NSA/MET/C1 - CMH offline | nsametC1.b1 |
D101220.3 | NSA/MET/C1 - 10m wind sensor offline | nsametC1.b1 |
D981102.1 | NSA/TOWER - Mislabeled tower sensors | nsametC1.00, nsamettwrC1.a1 |
D991116.1 | NSA/METTOWER - Questionable NSA Met-tower wind data | nsametC1.00, nsamettwrC1.a1 |
D991116.2 | NSA/METTOWER - Questionable NSA Met-tower wind data | nsametC1.00, nsamettwrC1.a1 |
D991129.1 | NSA/METOWER - Reprocess: Incorrect NSA wind direction minima and maxima | nsametC1.00, nsamettwrC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/14/2000 | 0000 | 04/06/2000 | 2359 |
Subject: | NSA/C1 data loss due to cut fiber optic cable |
DataStreams: | nsaorgC1.a1, nsapwsC1.a0, nsamettwrC1.a1 |
Description: | The fiber optic line connecting the MET TWR to the data collection facility was accidentally cut during snow removal. Data are unrecoverable. |
Measurements: | nsapwsC1.a0:
nsamettwrC1.a1:
nsaorgC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2001 | 2332 | 10/10/2001 | 0037 |
Subject: | NSA/PWS/C1 - Present Weather Sensor Calibration/Checks |
DataStreams: | nsapwsC1.a1, nsapwsC1.b1 |
Description: | During the listed period the Barrow Present Weather Sensor was being checked and calibrated and the data was incorrect. The calibration was off more than 3% previous to the re-calibration. |
Measurements: | nsapwsC1.a1:
nsapwsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2001 | 2300 | 10/13/2001 | 2301 |
Subject: | NSA/METTWR/C1 - Met Tower Data Incorrect During Calibrations/Changeouts |
DataStreams: | nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | Met Tower Data was incorrect during this period while sensor changeouts and calibrations were accomplished. |
Measurements: | nsamettwrC1.a1:
nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/23/2000 | 0000 | 10/10/2001 | 0037 |
Subject: | NSA/PWS/C1 - Calibration drift |
DataStreams: | nsapwsC1.a1 |
Description: | The calibration of the sensor drifted downwards slightly more than 3% during the more than two years in between calibrations. The drift had no significant impact on the data produced. Note: the period of this DQR extends back prior to 20000503 when the datastream was named nsapwsC1.a0. |
Measurements: | nsapwsC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 10/08/2001 | 2359 |
Subject: | NSA/METTWR/C1 - C1 SPURIOUS INFORMATION IN DATA HEADER |
DataStreams: | nsamettwrC1.b1 |
Description: | There is an attribute for read_timeout_count that should not be included. The affected prtion of the header is: read_timeout_count:details = '0 = no error, 1 = error' User should disregard this attribute information in the header. |
Measurements: | nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2001 | 0000 | 10/13/2001 | 2301 |
Subject: | NSA/METTWR/C1 - C1 WIND SPEED DATA QUESTIONABLE |
DataStreams: | nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | The anemometers located at all 4 levels (2m, 10m, 20m, and 40m) are heated anemometers. The thermistors controlling the amount of power applied to the cups of the anemometers failed. This caused too much power to be sent to the heating elements. The cups bubbled and, in some cases, completely melted through. |
Measurements: | nsamettwrC1.a1:
nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/25/2001 | 0000 | 10/13/2001 | 2301 |
Subject: | NSA/METTWR/C1 - C1 WIND DIRECTION DATA SUSPECT |
DataStreams: | nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | The wind direction sensor at the 10m level and 20m level became frozen. The senor at the 10m level became frozen on July 25 2001. The date that the 20m level became frozen is unknown but occurred after the 10m level became frozen. Both sensors froze in such a way as to consistently report wind direction values out of the south. |
Measurements: | nsamettwrC1.a1:
nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2002 | 1006 | 02/04/2002 | 1022 |
02/11/2002 | 2100 | 02/21/2002 | 1929 |
Subject: | NSA/METTWRC1 - METTWRCQ DATA REPORTED AS -9999 |
DataStreams: | nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | Due to local power outages caused by winter storms, the Bridgeview collection program became corrupted. All tower data and associated instruments on the tower reported as -9999. |
Measurements: | nsapwsC1.a1:
nsamettwrC1.a1:
nsapwsC1.b1:
nsamettwrC1.b1:
nsaorgC1.a1:
nsaorgC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2002 | 1023 | 02/11/2002 | 2059 |
02/21/2002 | 1930 | 02/21/2002 | 2002 |
Subject: | NSA/METTWRC1 - METTWRC1 NO DATA COLLECTED FROM TOWER |
DataStreams: | nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | Power outage caused fatal errors in the Bridgeview collection program. No data was ingested from the tower and sensors located on the tower. |
Measurements: | nsapwsC1.a1:
nsamettwrC1.a1:
nsapwsC1.b1:
nsamettwrC1.b1:
nsaorgC1.a1:
nsaorgC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/28/2002 | 1530 | 09/18/2002 | 1915 |
Subject: | NSA/METTWR/C1 - Wind Speed data intermittently bad |
DataStreams: | nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | Wind speed at 20m level icing up and wind speed values are intermittently 0 m/s, lower than other sensors and good at times. Heater failure on sensor that prevents icing. |
Measurements: | nsamettwrC1.a1:
nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/06/2002 | 0150 | 06/07/2002 | 1707 |
Subject: | NSA/METTWR/C1 - Data missing due to Power Failure |
DataStreams: | nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | From 020606.0150-0204, the met twr data (all levels) are all -9999 due to a power failure. The collection program was shut down from 0205-1930, so no data were collected. And from 1931-020607.1707, the data are all -9999 again due to the power failure. |
Measurements: | nsamettwrC1.a1:
nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/05/2002 | 1227 | 06/06/2002 | 2100 |
Subject: | NSA/METTIPTWR/C2 - Data missing due to Power Failure |
DataStreams: | nsametC2.00, nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
Description: | No data were collected due to a power failure. |
Measurements: | nsametC2.00:
nsamettiptwrC2.a1:
nsamettiptwrC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/22/2002 | 0029 | 11/21/2002 | 1935 |
Subject: | NSA/BMET/C2 - NSA/METTIPTOWER/C2 - C2 MET DATA MISSING |
DataStreams: | nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
Description: | Due to unknown wiring differences and pin changes by Vaisala to their Wind Speed and Direction sensors, a power feedback into the QLI data collector occurred. This caused an overload which shut the QLI data collector down. Once trouble shooting pinpointed the power feedback, wiring diagrams were created and the differences were found. Wiring was changed to prevent and remove the power feedback. |
Measurements: | nsamettiptwrC2.a1:
nsamettiptwrC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/2002 | 1430 | 03/26/2003 | 2229 |
Subject: | NSA/C2 - Missing met, pws, snodep data due to comm error |
DataStreams: | nsapwsC2.a1, nsapwsC2.b1, nsasnodepC2.a1, nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
Description: | An error in the communication sub-routine of the Bridgeview collection software occurred resulting in data loss from the Snow Depth sensor, Present Weather Sensor and the Barometer. |
Measurements: | nsamettiptwrC2.a1:
nsamettiptwrC2.b1:
nsapwsC2.b1:
nsasnodepC2.a1:
nsapwsC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/21/2003 | 0501 | 05/28/2003 | 1659 |
Subject: | NSA/METTWR/C1 - C1/METTWR PRESSURE DATA MISSING AND INCORRECT |
DataStreams: | nsamettwrC1.a1, nsamettwrC1.b1 |
Description: | Starting at 0501 UTC on 05/21, pressure readings frequently are out of tolerance. The read timeout value had changed from 250 ms to 150 ms. Changed the read time out back to 250 ms. Unknown as to how read timeout values changed. |
Measurements: | nsamettwrC1.a1:
nsamettwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/17/2002 | 0200 | 04/22/2003 | 1918 |
Subject: | NSA/PWS/C1 - C1/BARROW PWS WORKING INTERMITTENTLY |
DataStreams: | nsapwsC1.a1, nsapwsC1.b1 |
Description: | The PWS worked intermittently throughout entire period. Extensive troubleshooting located a broken wire in the RS-232 connector. Contact was made intermittently allowing some data to be recorded. |
Measurements: | nsapwsC1.a1:
nsapwsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/03/2004 | 1522 | 07/08/2004 | 1915 |
Subject: | NSA/METTWR/C1 - power outage at 40m level |
DataStreams: | nsamettwr4hC1.b1 |
Description: | 40m level lost power so no data was collected from this level. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2003 | 0000 | 04/23/2004 | 1858 |
Subject: | NSA/METTWR/C1 - Chilled Mirror transmit logic board chipset unsuited for Arctic |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Data missing due to problems with manufacturer's transmit logic board chipset. They were generic chips not rated for Arctic temperatures. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/2003 | 1719 | 07/14/2004 | 1500 |
Subject: | NSA/METTWR/C2 - Chilled Mirror grounding and timing issues |
DataStreams: | nsamettwr2hC2.b1 |
Description: | From beginning of data stream, the chilled mirror data was intermittent at best. Problems with grounding and timing issues between logging instruments caused data to be incorrect and at times missing. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/21/2004 | 1500 | 08/03/2004 | 2300 |
Subject: | NSA/METTWR/C1 - CMH Dew Point and RH data Incorrect |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The Chilled Mirror Dew Point reported negative dew point values. This caused the RH to be much lower than reality also. Compared to the 2m level the RH and dew point from the CMH are incorrect. Mirror was dirty, it was removed, cleaned and recalibrated. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/2004 | 1521 | 09/29/2004 | 0452 |
Subject: | NSA/METTWR/C1 - Instrument problem, Contamination, False signal |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Heavy, wet and blowing snow and ice caused measurement problems with the sonic anemometer mounted at the 2m level. Erroneous readings caused both the wind speed and direction values to be reported anomolously. Once the heavy, wet snow and ice stopped the readings returned to normal. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/17/2004 | 0130 | 09/17/2004 | 0411 |
Subject: | NSA/METTWR/C2 - Data Incorrect during Maintenance |
DataStreams: | nsamettwr2hC2.b1 |
Description: | The 10m tower was lowered for 2-year change-out of the met sensors. Data during this time is not representative. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/17/2004 | 2217 | 09/18/2004 | 0047 |
09/18/2004 | 2324 | 09/19/2004 | 0307 |
Subject: | NSA/METTWR/C2 - All Data Missing or Incorrect during Maintenance |
DataStreams: | nsamettwr2hC2.b1 |
Description: | All data incorrect or missing due to change of the Serial Data multiplexer and the Vaisala QLI data collector during these times. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/18/2004 | 0048 | 09/18/2004 | 2323 |
09/19/2004 | 0307 | 09/19/2004 | 1530 |
Subject: | NSA/METTWR/C2 - PWS Data Suspect |
DataStreams: | nsamettwr2hC2.b1 |
Description: | Data from the PWS is suspect during these times due to problems when the system was re-calibrated. System was corrected. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/19/2004 | 1500 | 09/08/2004 | 2321 |
Subject: | NSA/METTWR/C1 - 20m Temperature/RH Sensor Failing |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 20m temperature and RH sensor began reading high on 20040719. Aspirator fan failure caused a portion of the high reading. New fan failed to correct for all errors. Sensor replaced on 20040908 with recently calibrated sensor. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/19/2004 | 0600 | 10/19/2004 | 1200 |
Subject: | NSA/METTWR/C1 - Sonic - Instrument problem, Contamination, False signal |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Heavy, wet and blowing snow and ice caused measurement problems with the sonic anemometer mounted at the 2m level. Erroneous readings caused both the wind speed and direction values to be reported anomolously. Once the heavy, wet snow and ice stopped the readings returned to normal. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/2004 | 0245 | 11/02/2004 | 2325 |
Subject: | NSA/METTWR/C1 - Instrument problem, Frosting/Condensation |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 2m T & RH values were not in very good agreement with the CMH data or the other tower levels. A failed aspirator fan caused the readings to be incorrect. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/2004 | 2017 | 11/12/2004 | 2246 |
Subject: | NSA/METTWR/C2 - Instrument problem |
DataStreams: | nsamettwr2hC2.b1 |
Description: | CMH and PWS stopped reporting. Communication cable found to be broken. |
Measurements: | nsamettwr2hC2.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 |
---|---|---|---|
12/15/2004 | 0302 | 12/20/2004 | 2008 |
Subject: | NSA/METTWR/C1 - Instrument problem |
DataStreams: | nsamettwr4hC1.b1 |
Description: | 2m wind direction reporting only 236 degrees. Sensor failure. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2004 | 2003 | 12/16/2004 | 1922 |
Subject: | NSA/METTWR/C1 - Reprocess: Incorrect windspeed units |
DataStreams: | nsamettwr4hC1.b1 |
Description: | Power fluctuations caused the Ultrasonic wind sensor to revert to default setting of reporting wind speed in mph. Setting was changed back to m/s. |
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 |
---|---|---|---|
12/13/2004 | 1000 | 12/13/2004 | 2330 |
Subject: | NSA/C1 - Site-wide power failure |
DataStreams: | nsamplC1.a1, nsamwrpC1.b1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaaerich1C1.b1, nsaaerich2C1.b1, nsammcrmomC1.b1, nsamettwr4hC1.b1, nsavceil25kC1.b1, nsatwrcam40mC1.a1, nsaaerisummaryC1.b1, nsaaeriengineerC1.b1, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindspecC1.a0 |
Description: | The Barrow facility experienced a site-wide power failure on 12/13. Power was restored to most instruments between 2250 and 2330 GMT. |
Measurements: | nsa915rwpwindspecC1.a0:
nsa915rwpwindconC1.a1:
nsaaerich2C1.b1:
nsamwrlosC1.b1:
nsaaerisummaryC1.b1:
nsa915rwptempmomC1.a0:
nsaaerich1C1.b1:
nsamplpsC1.a0:
nsavceil25kC1.b1:
nsa915rwptempspecC1.a0:
nsa915rwptempconC1.a1:
nsaaeriengineerC1.b1:
nsamplC1.a1:
nsammcrmomC1.b1:
nsamettwr4hC1.b1:
nsamwrpC1.b1:
nsa915rwpwindmomC1.a0:
nsamwrtipC1.a1:
nsatwrcam40mC1.a1:
|
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 |
---|---|---|---|
02/15/2005 | 2250 | 02/15/2005 | 2330 |
Subject: | NSA/METTWR/C2 - Tower Lowered |
DataStreams: | nsamettwr2hC2.b1 |
Description: | The tower was lowered to install the GroundMFR. Data from the T/RH probes and the wind speed and direction sensors are not representative during the time period. |
Measurements: | nsamettwr2hC2.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 |
---|---|---|---|
11/06/2003 | 0000 | 05/26/2005 | 1014 |
Subject: | NSA/METTWR/C2 - Incorrect Maximum for Precip Values |
DataStreams: | nsamettwr2hC2.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: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/03/2005 | 0123 | 06/03/2005 | 0229 |
Subject: | NSA/METTWR/C2 - CMH Data Missing During Calibration |
DataStreams: | nsamettwr2hC2.b1 |
Description: | The CMH was removed for it's bi-annual cleaning and calibration. |
Measurements: | nsamettwr2hC2.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 | 1830 | 08/22/2005 | 1850 |
Subject: | NSA/METTWR/C2 - Tower Lowered, Data Not Representative |
DataStreams: | nsamettwr2hC2.b1 |
Description: | The tower was lowered to remove equipment. The data from the wind sensors and T/RH probes were not representative. |
Measurements: | nsamettwr2hC2.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 | 1900 | 02/20/2006 | 1627 |
Subject: | NSA/METTWR/C2 - Wind speed values artificially low |
DataStreams: | nsamettwr2hC2.b1 |
Description: | Wind speed values were artificially low due to snow/ice accumulation on the anemometer cups during blizzard conditions. The heaters on the cups were not able to keep up with conditions. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2006 | 1405 | 02/20/2006 | 1107 |
02/21/2006 | 0619 | 02/21/2006 | 2255 |
Subject: | NSA/METTWR/C2 - CMH Data incorrect |
DataStreams: | nsamettwr2hC2.b1 |
Description: | CMH data was incorrect due to blockage of intake by heavy, wet snow during blizzard conditions. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2006 | 1113 | 02/21/2006 | 2359 |
Subject: | NSA/METTWR/C2 - PWS data incorrect |
DataStreams: | nsamettwr2hC2.b1 |
Description: | The Present Weather Sensor measurement optics were blocked by heavy, wet snow during blizzard conditions. |
Measurements: | nsamettwr2hC2.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 |
---|---|---|---|
04/04/2006 | 1914 | 04/06/2006 | 2025 |
Subject: | NSA/METTWR/C2 - CMH Intake Fan Failure |
DataStreams: | nsamettwr2hC2.b1 |
Description: | Intake fan failing causing poor readings from the CMH. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2006 | 2212 | 04/11/2006 | 1812 |
Subject: | NSA/METTWR/C2 - CMH Data Suspect |
DataStreams: | nsamettwr2hC2.b1 |
Description: | CMH data was suspect due to incorrect intake fan installed. Proper spares were not on hand. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/20/2006 | 1535 | 04/20/2006 | 2110 |
Subject: | NSA/METTWR/C2 - CMH Data Suspect |
DataStreams: | nsamettwr2hC2.b1 |
Description: | CMH data was suspect due to blockage of intake by snow. |
Measurements: | nsamettwr2hC2.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 |
---|---|---|---|
11/06/2003 | 0000 | 07/12/2006 | 1853 |
Subject: | NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa |
DataStreams: | nsamettwr2hC2.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: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/11/2006 | 1756 | 08/11/2006 | 1925 |
Subject: | NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance. |
DataStreams: | nsamettwr2hC2.b1 |
Description: | CMH measured data was missing and the derived variables were incorrect due to routine maintenance. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/2006 | 2228 | 08/21/2006 | 2329 |
08/22/2006 | 0233 | 08/22/2006 | 0301 |
08/23/2006 | 2214 | 08/23/2006 | 2219 |
08/24/2006 | 1617 | 08/24/2006 | 1628 |
08/25/2006 | 0257 | 08/25/2006 | 0309 |
09/01/2006 | 0158 | 09/01/2006 | 0331 |
Subject: | NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance. |
DataStreams: | nsamettwr2hC2.b1 |
Description: | Present Weather Sensor data was missing or incorrect due to maintenance activities repeated approximately daily as we were trying to correct another problem. |
Measurements: | nsamettwr2hC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/11/2006 | 1952 | 08/11/2006 | 2006 |
Subject: | NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance. |
DataStreams: | nsamettwr2hC2.b1 |
Description: | Data from the tower is not representative of local conditions due to the tower being lowered for radiometer change. Sensors not attached to the tower such as the Present Weather Sensor, the Chilled Mirror Hygrometer and the Barometer were not affected. |
Measurements: | nsamettwr2hC2.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 |
---|---|---|---|
11/27/2006 | 0608 | 11/27/2006 | 2226 |
Subject: | NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow |
DataStreams: | nsamettwr2hC2.b1 |
Description: | The 2m RH, Dew Point and Vapor Pressure values are incorrect due to the intake of the aspirated shield being blocked with snow and ice. The RH% values are artificially larger than the 5m and Chilled Mirror values. |
Measurements: | nsamettwr2hC2.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:
|
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/18/2008 | 0000 | 09/20/2008 | 2359 |
Subject: | NSA/MET/C1 - Temp/RH/wind data questionable |
DataStreams: | nsametC1.b1, nsatwrC1.b1 |
Description: | New wind sensors and new T/RH probes were being installed during this time period. The tower booms were lowered and much of the data collected were not at listed heights nor were the data accurate due to configurations during install. |
Measurements: | nsametC1.b1:
nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/2008 | 1220 | 10/10/2008 | 1750 |
10/11/2008 | 0700 | 10/11/2008 | 1100 |
11/07/2008 | 0652 | 11/08/2008 | 1903 |
11/22/2008 | 1400 | 11/24/2008 | 0310 |
11/25/2008 | 1900 | 11/27/2008 | 0300 |
02/13/2009 | 1450 | 02/18/2009 | 1800 |
Subject: | NSA/MET/C1 - PWS data missing due to snow impaction |
DataStreams: | nsametC1.b1 |
Description: | Blizzard conditions caused the optics to become impacted with snow and ice rendering the Present Weather Detector inoperative. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2008 | 0000 | 12/18/2008 | 2100 |
Subject: | NSA/MET/C1 - Wind data intermittent |
DataStreams: | nsametC1.b1, nsatwrC1.b1 |
Description: | There was a loose wire on the serial data multiplexer causing the wind data to become missing during high wind situations. The high winds caused the enclosure to vibrate making the connection intermittent. |
Measurements: | nsametC1.b1:
nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/29/2008 | 1800 | 11/30/2008 | 1730 |
12/29/2008 | 1500 | 12/30/2008 | 0800 |
01/01/2009 | 0138 | 01/02/2009 | 0447 |
01/04/2009 | 0624 | 01/06/2009 | 1428 |
01/07/2009 | 1740 | 01/08/2009 | 1720 |
01/14/2009 | 0930 | 01/14/2009 | 2103 |
Subject: | NSA/MET/C1 - CMH data missing |
DataStreams: | nsametC1.b1 |
Description: | The data from the CMH was missing during these times due to a failing logic board. The board was replaced. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/08/2009 | 2244 | 06/11/2009 | 2037 |
Subject: | NSA/MET/C1 - Met data incorrect during calibration |
DataStreams: | nsametC1.b1, nsatwrC1.b1 |
Description: | All met data from the tower booms (temp, RH, winds and derived variables) were incorrect due to the booms being lowered from their measurement heights. Additionally, the scaffolding was located directly adjacent to the booms affecting the wind field and the Temp/RH data. |
Measurements: | nsametC1.b1:
nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/10/2009 | 0014 | 06/10/2009 | 0130 |
Subject: | NSA/MET/C1 - PWS calibration |
DataStreams: | nsametC1.b1 |
Description: | The PWS was undergoing calibration. Any data collected during this time is not representative of the atmospheric state. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/10/2009 | 0159 | 06/10/2009 | 1940 |
Subject: | NSA/MET/C1 - CMH calibration |
DataStreams: | nsametC1.b1 |
Description: | CMH data missing due to removal of the sensor for annual calibration. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/13/2009 | 2215 | 07/08/2009 | 2250 |
Subject: | NSA/MET/C1 - 2m RH values incorrect |
DataStreams: | nsametC1.b1, nsatwrC1.b1 |
Description: | The new t/rh probe installed during annual calibrations and checks began to exhibit readings that were biased high compared to the Chilled Mirror Hygrometer. In high RH conditions the sensor would consistently report RH values in excess of 105%. Comparisons to the other tower levels also suggested that the 2m level RH data is suspect. |
Measurements: | nsametC1.b1:
nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/12/2009 | 2237 | 09/23/2009 | 2259 |
Subject: | NSA/TWR/C1 - 40m T/RH Sensor Failure |
DataStreams: | nsatwrC1.b1 |
Description: | 40m RH data were very noisy after tower maintenance. Following system re-boot, RH data were too high. Sensor was replaced. |
Measurements: | nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/24/2009 | 2328 | 12/09/2009 | 2315 |
Subject: | NSA/TWR/C1 - 40m and 20m Data Incorrect |
DataStreams: | nsatwrC1.b1 |
Description: | A power distribution problem required us to shut down power to the 40m level. All T/RH were missing and the 40m wind sensor did not have heat to remove any ice build up. All wind data from the 40m level should be viewed critically before use. The 20m T/RH sensor was power spike when the problem occurred causing this sensor to become erratic. See D100302.2 for the continuation of the 40m problem. |
Measurements: | nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/2010 | 0513 | 02/05/2010 | 2100 |
Subject: | NSA/MET/C1 - CMH and 10m winds failure |
DataStreams: | nsametC1.b1 |
Description: | At 0513GMT on 1/23 the atmos_pressure and CMH - temp, RH, DP & Sat. VP changed abruptly to unlikely values. The 10m winds failed at 1420GMT. The CMH was repaired on 02/04/2010 at 2254GMT and the 10m winds sensor was replaced on 02/05/2010 at 2100GMT. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2010 | 1420 | 02/05/2010 | 2100 |
Subject: | NSA/TWR/C1 - Wind sensor data failures |
DataStreams: | nsatwrC1.b1 |
Description: | The wind speed and direction values for 2m, 10m and 20m dropped to zero at 14:20 GMT. The cause was a power failure due to failed power line. Power spikes caused the wind sensors to revert to default settings for communications and measurements. The following is a list of dates that the various sensors came back online: 2m wind problem ending on 01/28/2010 @ 2330GMT 20m wind problem ending on 02/04/2010 @ 2230GMT 10m wind problem ending on 02/05/2010 @ 2100GMT 40m winds were already failing and documented in DQPR 2262 and PIF P091030.1. The MET system was also affected and documented in DQPR 2337. |
Measurements: | nsatwrC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2010 | 1943 | 04/26/2010 | 1903 |
Subject: | NSA/MET/C1 - CMH Data Missing |
DataStreams: | nsametC1.b1 |
Description: | The GFCI had tripped causing the CMH to lose power. All CMH variables are missing except CMHRH which reports 100% for the entire time. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2010 | 1730 | 07/07/2010 | 2200 |
Subject: | NSA/MET/C1 - CMH Sent to Vendor for Repair |
DataStreams: | nsametC1.b1 |
Description: | CMH connector on the transmitter enclosure that goes to the head unit degraded and failed. System was removed and sent to the manufacturer for repair. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2010 | 1208 | 12/09/2010 | 2259 |
Subject: | NSA/MET/C1 - CMH offline |
DataStreams: | nsametC1.b1 |
Description: | CMH removed for repair. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/2010 | 1543 | 11/05/2010 | 0716 |
Subject: | NSA/MET/C1 - 10m wind sensor offline |
DataStreams: | nsametC1.b1 |
Description: | The 10m wind sensor values were 0 m/s and 000 for wind direction. The sensor lost communications. |
Measurements: | nsametC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/1998 | 0000 | 10/22/1998 | 2200 |
Subject: | NSA/TOWER - Mislabeled tower sensors |
DataStreams: | nsametC1.00, nsamettwrC1.a1 |
Description: | The NSA tower data displayed on the local computer screen had the height mislabeled. Data written to files were correct. When the data acquisition program was fixed on 22 OCT 1998, only the computer display was changed. |
Measurements: | nsamettwrC1.a1:
nsametC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/08/1999 | 2200 | 10/25/1999 | 2300 |
Subject: | NSA/METTOWER - Questionable NSA Met-tower wind data |
DataStreams: | nsametC1.00, nsamettwrC1.a1 |
Description: | The data analysis software for the NSA Met_tower system was upgraded at 2200 GMT on 8 SEP 1999. The upgrade included replacement of missing data with -99.99's when the routine that polled the Met-tower sensors timed out. This resulted in large negative spikes in the 1-min averages. These spikes almost always occurred during the first several 1-min periods of a half-hour data processing routine. On 25 OCT 1999 at 2300 the routine that replaced missing data was changed to insert the previous 1-min averaged data instead of -99.99. Since at the most only one or two values are missing in ay averaging period, this change results in a reasonable estimate of the true mean values |
Measurements: | nsamettwrC1.a1:
nsametC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/08/1999 | 2200 | 11/15/1999 | 2200 |
Subject: | NSA/METTOWER - Questionable NSA Met-tower wind data |
DataStreams: | nsametC1.00, nsamettwrC1.a1 |
Description: | The data analysis software for the NSA Met-tower system was upgraded at 2200 GMT on 8 SEP 1999. The upgrade included insertion of -99.99's for the wind vectors when the wind speed or direction were either missing or equal to 0. This resulted in incorrect vector averaged wind speed, wind direction, and standard deviation of wind direction. When this occurred, the vector-averaged wind speed and standard deviation of wind direction were often abnormally high and the vector-averaged wind direction was often approximately 225 deg. Starting at 2300 GMT on 25 OCT 99 missing wind data were replaced by the previous 1-min average and starting at 2200 GMT on 15 NOV 1999 the computed wind vectors were used whenever wind speeds or wind directions were 0. |
Measurements: | nsamettwrC1.a1:
nsametC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/24/1998 | 0000 | 11/29/1999 | 2000 |
Subject: | NSA/METOWER - Reprocess: Incorrect NSA wind direction minima and maxima |
DataStreams: | nsametC1.00, nsamettwrC1.a1 |
Description: | From the time of installation of the NSA C1 Met-tower system on 24 MAR 1998 until 29 NOV 1999 all wind direction minima and maxima were reported as raw (unrotated) data. In order to obtain correct minima and maxima 30 deg must be subtracted from the value. All mean wind directions were computed from rotated (corrected) data. |
Measurements: | nsamettwrC1.a1:
nsametC1.00:
|