DQR ID | Subject | Data Streams Affected |
---|---|---|
D011119.2 | NSA/METTWR/C1 - Met Tower Data Incorrect During Calibrations/Changeouts | nsamettwrC1.b1, nsamettwrC1.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.b1, nsamettwrC1.a1 |
D020402.4 | NSA/METTWR/C1 - C1 WIND DIRECTION DATA SUSPECT | nsamettwrC1.b1, nsamettwrC1.a1 |
D020424.1 | NSA/METTWRC1 - METTWRCQ DATA REPORTED AS -9999 | nsaorgC1.b1, nsaorgC1.a1, nsapwsC1.a1, nsamettwrC1.b1, nsamettwrC1.a1, nsapwsC1.b1 |
D020424.2 | NSA/METTWRC1 - METTWRC1 NO DATA COLLECTED FROM TOWER | nsamettwrC1.b1, nsaorgC1.b1, nsaorgC1.a1, nsapwsC1.a1, nsamettwrC1.a1, nsapwsC1.b1 |
D020610.2 | NSA/METTWR/C1 - Wind Speed data intermittently bad | nsamettwrC1.b1, nsamettwrC1.a1 |
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 |
D021212.1 | NSA/GNDRAD/C1 - Instrument Maintenance | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.2 | NSA/GNDRAD/C1 - PSP erroneously replaced by B&W | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.3 | NSA/GNDRAD/C1 - Instrument maintenance | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.4 | NSA/GNDRAD/C1 - Bad calibrations applied | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.9 | NSA/GNDRAD/C1 - PSP Data corrupted by brief spike | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D030301.1 | NSA/GNDRAD/C1 - No power to IRT | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D030411.4 | NSA/C2 - Missing met, pws, snodep data due to comm error | nsapwsC2.a1, nsapwsC2.b1, nsasnodepC2.a1, nsamettiptwrC2.a1, nsamettiptwrC2.b1 |
D030517.2 | NSA/SONDE/C1 - Broken temperature sensor | nsasondewnpnC1.a1, nsasondewnpnC1.b1 |
D030528.5 | NSA/METTWR/C1 - C1/METTWR PRESSURE DATA MISSING AND INCORRECT | nsamettwrC1.a1, nsamettwrC1.b1 |
D031216.1 | NSA/GNDRAD/C1 - IRT cable failure | nsagndrad60sC1.b1 |
D031216.2 | NSA/GNDRAD/C1 - IRT returned to vendor | nsagndrad60sC1.b1 |
D040208.1 | NSA/GNDRAD/C2 - Upwelling PIR measurement - spikes in thermopile signal | nsagndrad20sC2.a1, nsagndrad60sC2.b1, nsagndradC2.00 |
D040722.3 | NSA/METTWR/C2 - Chilled Mirror grounding and timing issues | nsamettwr2hC2.b1 |
D040822.1 | NSA/SONDE/C1 - This is a test sounding done using an RS80H radiosonde | nsasondewnpnC1.b1 |
D040919.1 | NSA/GNDRAD/C1 - IRT power failure | nsagndrad60sC1.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 |
D041013.3 | NSA/GNDRAD/C1 - Frosting/Condensation | nsagndrad20sC1.a1, nsagndrad60sC1.b1, nsagndradC1.00 |
D041112.1 | NSA/METTWR/C2 - Instrument problem | nsamettwr2hC2.b1 |
D041116.1 | NSA/RWP/C1 - System problems | nsa915rwpC1.00, nsa915rwprawC1.00, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0 |
D041130.1 | NSA/SONDE/C1 - Test sounding using RS80H | nsasondewnpnC1.b1 |
D041213.5 | NSA/SONDE/C1 - Incorrect surface altitude | nsasondewnpnC1.b1, nsasondeC1.00 |
D050110.1 | NSA/RWP/C1 - Instrument problem, Data transfer problem | nsa915rwpwindconC1.a1 |
D050112.1 | NSA/C1 - Site-wide power failure | nsaaerich1C1.b1, nsaaerich2C1.b1, nsaaeriengineerC1.b1, nsaaerisummaryC1.b1, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0, nsamettwr4hC1.b1, nsammcrmomC1.b1, nsamplC1.a1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsamwrpC1.b1, nsatwrcam40mC1.a1, nsavceil25kC1.b1 |
D050121.4 | NSA/GNDRAD/C2 - Incorrect calibration coefficients applied to upwelling(Gndrad)PIR | nsagndrad60sC2.b1, nsagndradC2.00 |
D050224.1 | NSA/METTWR/C2 - Tower Lowered | nsamettwr2hC2.b1 |
D050321.4 | NSA/SONDE/C1 - Bad temperature | nsasondewnpnC1.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 |
D050629.1 | NSA/GNDRAD/C1/C2 - Upwelling Shortwave data flagged bad are good. | nsagndrad60sC1.b1, nsagndrad60sC2.b1 |
D050825.3 | NSA/GNDRAD/C1 - Power Disconnected Briefly | nsagndrad60sC1.b1 |
D050829.1 | NSA/METTWR/C2 - Tower Lowered, Data Not Representative | nsamettwr2hC2.b1 |
D060209.4 | NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors | nsagndrad20sC1.a0, nsagndrad60sC1.b1, nsagndradC1.00 |
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 |
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 |
D060630.39 | NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error | nsagndrad60sC1.b1 |
D060630.40 | NSA/GNDRAD/C2 - Reprocess: Longwave Calibration error | nsagndrad60sC2.b1 |
D060803.2 | NSA/SONDE/C1 - Noisy/Unstable RH and dew point data | nsasondewnpnC1.b1 |
D060811.1 | NSA/SONDE/C1 - Bad surface RH and temperature values | nsasondewnpnC1.b1 |
D060818.1 | NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa | nsamettwr2hC2.b1 |
D060824.1 | NSA/GNDRAD/C1 - Incorrect calibration coefficients | nsagndrad20sC1.a0, nsagndrad20sC1.a1, nsagndrad60sC1.b1, nsagndradC1.00 |
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 |
D060928.1 | NSA/SONDE/C1 - RH values offset due to error in ground check | nsasondewnpnC1.b1 |
D060928.4 | NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry | nsasondewnpnC1.b1 |
D061011.1 | NSA/SONDE/C1 - Incorrect surface values of T and RH | nsasondewnpnC1.b1 |
D061114.3 | NSA/SONDE/C1 - RH sensor failure | nsasondewnpnC1.b1 |
D061128.1 | NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow | nsamettwr2hC2.b1 |
D070124.1 | NSA/SONDE/C1 - Incorrect surface RH value | nsasondewnpnC1.b1 |
D070302.1 | NSA/SONDE/C1 - Temperature sensor broke at launch | nsasondewnpnC1.b1 |
D070910.3 | NSA/RWP/C1 - Instrument problem | nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0 |
D071010.1 | NSA/GNDRAD/C1 - Preventive maintenance | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D071018.2 | NSA/GNDRAD/C1 - Missing data | nsagndrad60sC1.b1 |
D071025.3 | NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D080904.5 | NSA/GNDRAD/C1 - Upwelling PIR ventilator fan failure | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D080919.1 | NSA/GNDRAD/C1 - Net radiometer removed | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D090209.3 | NSA/GNDRAD/C2 - Reprocess: IRT insufficiently heated | nsagndrad60sC2.b1 |
D090629.2 | NSA/SONDE/C1 - Wind data missing | nsasondewnpnC1.b1 |
D090629.5 | NSA/RWP/C1 - Missing data blocks | nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindspecC1.a0, nsa915rwpwindmomC1.a0 |
D090720.2 | NSA/SONDE/C1 - Wind data missing | nsasondewnpnC1.b1 |
D110817.5 | NSA/GNDRAD/C1 - Reprocessed: Miscalibrated upwelling SW | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D110902.2 | NSA/GNDRAD/C1 - Incorrect data during power outage | nsagndrad20sC1.a0, nsagndrad60sC1.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.b1, nsamettwrC1.a1 |
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 |
---|---|---|---|
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.b1, nsamettwrC1.a1 |
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.b1, nsamettwrC1.a1 |
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.b1, nsaorgC1.a1, nsapwsC1.a1, nsamettwrC1.b1, nsamettwrC1.a1, nsapwsC1.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:
nsamettwrC1.b1:
nsapwsC1.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: | nsamettwrC1.b1, nsaorgC1.b1, nsaorgC1.a1, nsapwsC1.a1, nsamettwrC1.a1, nsapwsC1.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:
nsamettwrC1.b1:
nsapwsC1.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.b1, nsamettwrC1.a1 |
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 |
---|---|---|---|
06/13/2001 | 2100 | 06/13/2001 | 2200 |
Subject: | NSA/GNDRAD/C1 - Instrument Maintenance |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Tip tower was lowered for instrument maintenance. Data taken during this period are corrupt. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/13/2001 | 2300 | 06/21/2001 | 1800 |
Subject: | NSA/GNDRAD/C1 - PSP erroneously replaced by B&W |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The PSP was erroneously replaced with a B&W on 6/13 and then changed back to the PSP on 6/21. Data should still be good since appropriate calibration factors were applied. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/21/2001 | 1800 | 06/21/2001 | 1830 |
Subject: | NSA/GNDRAD/C1 - Instrument maintenance |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The tip tower was lowered for instrument maintenance. Data recorded are garbage. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/08/2001 | 0100 | 11/09/2001 | 0300 |
Subject: | NSA/GNDRAD/C1 - Bad calibrations applied |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Bad data due to erroneous calibration constant in configuration file |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/2001 | 2100 | 11/07/2001 | 2105 |
Subject: | NSA/GNDRAD/C1 - PSP Data corrupted by brief spike |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Large unreasonable narrow spike in PSP data; cause not known. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/24/2002 | 1725 | 11/16/2002 | 0003 |
Subject: | NSA/GNDRAD/C1 - No power to IRT |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The data logger failed to supply power to the IRT. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
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 |
---|---|---|---|
05/12/2003 | 2300 | 05/13/2003 | 0045 |
Subject: | NSA/SONDE/C1 - Broken temperature sensor |
DataStreams: | nsasondewnpnC1.a1, nsasondewnpnC1.b1 |
Description: | It appears that the temperature sensor on this radiosonde broke after launch. There is a sudden drop of 12 degC in 2 seconds and the remaining tdry values seem to be about 30 degC low. |
Measurements: | nsasondewnpnC1.b1:
nsasondewnpnC1.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 |
---|---|---|---|
05/27/2003 | 1400 | 09/11/2003 | 1906 |
Subject: | NSA/GNDRAD/C1 - IRT cable failure |
DataStreams: | nsagndrad60sC1.b1 |
Description: | The IRT signal became very noisy and the problem was traced to the cable (after the instrument was returned to the vendor for diagnosis). The problem started occurring when ice surrounding the cable began to melt. The cable was repaired and the instrument reinstalled. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/11/2003 | 1906 | 10/15/2003 | 0015 |
Subject: | NSA/GNDRAD/C1 - IRT returned to vendor |
DataStreams: | nsagndrad60sC1.b1 |
Description: | The IRT was returned to the vendor for diagnosis. It was found to be operating as expected and the signal noise problem was traced to the cable. The cable was repaired and the instrument reinstalled. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2004 | 2309 | 05/27/2004 | 1500 |
Subject: | NSA/GNDRAD/C2 - Upwelling PIR measurement - spikes in thermopile signal |
DataStreams: | nsagndrad20sC2.a1, nsagndrad60sC2.b1, nsagndradC2.00 |
Description: | ULH measurements have many spikes at this site. On 2/03, the anomalous spikes become frequent and are very noticeable from 0027 - 0445 UTC. Negative and positive spikes occur on seemingly random days until 5/27/2004. Extensive troublshooting could not resolve problem, including a datalogger changout on 4/22. Problem seems to have resolved itself with the last spikes occuring on 5/27/2004 approximately 1500GMT. No problems with upwelling PIR noise are evident up until and after the conversion from Zeno to Campbell dataloggers on 11/22/2004. |
Measurements: | nsagndrad60sC2.b1:
nsagndradC2.00:
nsagndrad20sC2.a1:
|
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 |
---|---|---|---|
08/20/2004 | 1844 | 08/20/2004 | 1925 |
Subject: | NSA/SONDE/C1 - This is a test sounding done using an RS80H radiosonde |
DataStreams: | nsasondewnpnC1.b1 |
Description: | This was a sounding done using an RS80H radiosonde to test a special operational procedure. There is nothing wrong with the data, though users should be aware that the sounding was not done using the current ARM standard RS90 radiosonde. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/15/2004 | 0000 | 09/22/2004 | 0552 |
Subject: | NSA/GNDRAD/C1 - IRT power failure |
DataStreams: | nsagndrad60sC1.b1 |
Description: | After performing corrective maintenance which involved turning off power to the GNDRAD instruments and data logger, power to the IRT was not restored. The problem was corrected by replacing the data logger. |
Measurements: | nsagndrad60sC1.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 |
---|---|---|---|
10/09/2004 | 0000 | 10/15/2004 | 2359 |
Subject: | NSA/GNDRAD/C1 - Frosting/Condensation |
DataStreams: | nsagndrad20sC1.a1, nsagndrad60sC1.b1, nsagndradC1.00 |
Description: | The GNDRAD PIR and IRT comparison was showing the IRT 2-4 W/m^2 greater than the PIR. Suspected snow or frost on the instrument(s). Corrective maintenance performed 10/15/04 at 21:30 UT. Optics of both instruments were cleaned. Upwelling longwave measurement agreement restored (+/- 5 W/^2). Although the relative performance (agreement) of the two instruments improved after corrective maintenance (+/- 2 W/m^2), no correction is suggested because the agreement remains with the estimated measurement uncertainty of +/- 4 W/m^2 (IRT) and +/-10 W/m^2 (Inverted PIR) |
Measurements: | nsagndrad60sC1.b1:
nsagndradC1.00:
nsagndrad20sC1.a1:
|
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 |
---|---|---|---|
10/05/2004 | 0101 | 02/28/2005 | 0101 |
Subject: | NSA/RWP/C1 - System problems |
DataStreams: | nsa915rwpC1.00, nsa915rwprawC1.00, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0 |
Description: | RWP PC experienced repeated lock-ups during system operations. Various components were swapped out and the loggerboard configuration was modified. |
Measurements: | nsa915rwprawC1.00:
nsa915rwpwindspecC1.a0:
nsa915rwpC1.00:
nsa915rwpwindconC1.a1:
nsa915rwptempmomC1.a0:
nsa915rwpwindmomC1.a0:
nsa915rwptempspecC1.a0:
nsa915rwptempconC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/29/2004 | 2303 | 11/30/2004 | 0023 |
Subject: | NSA/SONDE/C1 - Test sounding using RS80H |
DataStreams: | nsasondewnpnC1.b1 |
Description: | This is a test sounding done using an old RS80H radiosonde rather than the production RS90 version. Although the sonde functioned normally, the RH data may be subject to a dry bias caused by the age of the sensor and possible contamination. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2002 | 0000 | 02/13/2004 | 2359 |
Subject: | NSA/SONDE/C1 - Incorrect surface altitude |
DataStreams: | nsasondewnpnC1.b1, nsasondeC1.00 |
Description: | The value of the station altitude (relative to mean sea level) is incorrect in all NSA radiosonde files prior to 2/14/2004. The correct value is 8 m. The incorrect value can be different. Prior to 4/24/2002 (in platform nsaisssonde...) it was given as 12 m. From 4/24/2002 to 2/13/2004 (in platform nsasondewnpn...) it is almost always given as 27 m (sometimes [rarely] 17 m). |
Measurements: | nsasondewnpnC1.b1:
nsasondeC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/07/2003 | 0000 | 01/10/2005 | 0000 |
Subject: | NSA/RWP/C1 - Instrument problem, Data transfer problem |
DataStreams: | nsa915rwpwindconC1.a1 |
Description: | Problems with the coherent integration hardware resulted in repeated ingest failures when too many errors occurred. These cases involved occasions when there were no samples from a single axis (or more) during an averaging interval. If there were sufficient samples, the mean wind speed and direction were reported if normal data criteria were met. However, there were undoubtedly cases when only a few samples were obtained during an averaging interval. Thus the variability of the data is likely increased. The data are correct when reported. |
Measurements: | nsa915rwpwindconC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2004 | 1000 | 12/13/2004 | 2330 |
Subject: | NSA/C1 - Site-wide power failure |
DataStreams: | nsaaerich1C1.b1, nsaaerich2C1.b1, nsaaeriengineerC1.b1, nsaaerisummaryC1.b1, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0, nsamettwr4hC1.b1, nsammcrmomC1.b1, nsamplC1.a1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsamwrpC1.b1, nsatwrcam40mC1.a1, nsavceil25kC1.b1 |
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 |
---|---|---|---|
01/06/2005 | 2030 | 01/12/2005 | 1540 |
Subject: | NSA/GNDRAD/C2 - Incorrect calibration coefficients applied to upwelling(Gndrad)PIR |
DataStreams: | nsagndrad60sC2.b1, nsagndradC2.00 |
Description: | An insitu test comparing the Gndrad PIR and the Gndrad IRT at the NSA was performed from 6 Jan 2005 to 12 Jan 2005. The radiometer mentor requested the Eppley single calibration coefficient for the PIR replace the 4 coefficients method developed by NREL. The Grndrad PIR compared closer to the Gndrad IRT during this period. However, the radiometer mentor believes the 4 coefficient PIR irradiance measurements remains superior to the single coefficient Eppley PIR measurement method. Further questions should be directed to the radiometer instrument mentor. |
Measurements: | nsagndrad60sC2.b1:
nsagndradC2.00:
|
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 |
---|---|---|---|
03/08/2005 | 2300 | 03/09/2005 | 0033 |
Subject: | NSA/SONDE/C1 - Bad temperature |
DataStreams: | nsasondewnpnC1.b1 |
Description: | Because of strong winds, the radiosonde hit the ground after launch and the temperature sensor broke. The RH and pressure data also should be considered suspect. |
Measurements: | nsasondewnpnC1.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 |
---|---|---|---|
04/01/2005 | 0000 | 04/30/2005 | 2359 |
Subject: | NSA/GNDRAD/C1/C2 - Upwelling Shortwave data flagged bad are good. |
DataStreams: | nsagndrad60sC1.b1, nsagndrad60sC2.b1 |
Description: | The Upwelling Shortwave at both NSA facilites, C1 and C2, have been flagged red by the automatic tests because it is above empiical limits determined for a more southerly site (SGP) for this time of year. The data are good and should be flagged green. The test limits will be revised for NSA. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/24/2005 | 0030 | 08/24/2005 | 0030 |
Subject: | NSA/GNDRAD/C1 - Power Disconnected Briefly |
DataStreams: | nsagndrad60sC1.b1 |
Description: | Power to the Tip tower and Groundrad was disconnected briefly while ground resistance measurements were made. The following comments are from Inst. Mentor Tom Stoffel: The longwave and shortwave irradiances from GNDRAD were not effected by the temporary power disconnect. Data are good. This would have only stopped the ventilators for a brief time and the data do not show any signs of poor instrument responses. The "sfc_ir_temp" data were, however, impacted during the brief (2 readings?) interval. |
Measurements: | nsagndrad60sC1.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 |
---|---|---|---|
02/07/2006 | 0910 | 02/07/2006 | 2350 |
Subject: | NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1, nsagndradC1.00 |
Description: | During the power outage the upwelling global measurement from the PSP instrument shows a slight increase from -5 to +0 W/m2. This is due to removal of thermal offsets induced by the AC heater during the power outage. This heater is installed within the PSP ventilator - it is necessary for the NSA/C1 climate. The upwelling longwave PIR instrument is unaffected due to case and dome temperature corrections. The IRT is AC powered and was not operational during this time period. |
Measurements: | nsagndrad60sC1.b1:
nsagndradC1.00:
nsagndrad20sC1.a0:
|
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 |
---|---|---|---|
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 |
---|---|---|---|
11/04/2004 | 1600 | 12/21/2005 | 1855 |
Subject: | NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error |
DataStreams: | nsagndrad60sC1.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in December 2003. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/17/2004 | 0037 | 12/22/2005 | 2152 |
Subject: | NSA/GNDRAD/C2 - Reprocess: Longwave Calibration error |
DataStreams: | nsagndrad60sC2.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in December 2003. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields. |
Measurements: | nsagndrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/2006 | 0515 | 07/31/2006 | 0523 |
Subject: | NSA/SONDE/C1 - Noisy/Unstable RH and dew point data |
DataStreams: | nsasondewnpnC1.b1 |
Description: | The RH readings during the first 8 minutes of this sounding include three apparently incorrect oscillations to near-zero values. After checking the absolutely raw data, it seems as though this period was excessively noisy, resulting in many missing values. The noise abatted and the remaining sounding values are valid. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/30/2006 | 0522 | 07/30/2006 | 0523 |
08/01/2006 | 0520 | 08/01/2006 | 0521 |
08/04/2006 | 0532 | 08/04/2006 | 0533 |
08/06/2006 | 0528 | 08/06/2006 | 0529 |
08/08/2006 | 0517 | 08/08/2006 | 0518 |
08/09/2006 | 0527 | 08/09/2006 | 0528 |
08/11/2006 | 0525 | 08/11/2006 | 0526 |
08/15/2006 | 0534 | 08/15/2006 | 0535 |
08/17/2006 | 0535 | 08/17/2006 | 0536 |
08/18/2006 | 0516 | 08/18/2006 | 0517 |
08/19/2006 | 0538 | 08/19/2006 | 0539 |
08/19/2006 | 1745 | 08/19/2006 | 1746 |
08/20/2006 | 0532 | 08/20/2006 | 0533 |
08/20/2006 | 1729 | 08/20/2006 | 1730 |
08/21/2006 | 0530 | 08/21/2006 | 0531 |
08/22/2006 | 0524 | 08/22/2006 | 0525 |
Subject: | NSA/SONDE/C1 - Bad surface RH and temperature values |
DataStreams: | nsasondewnpnC1.b1 |
Description: | This is a subtle problem that might escape notice. For the identified sonde launches, the ground station lost its signal between the time it was removed from the ground check set and the time it was launched. As a result, the software, which automatically determines the launch time and surface conditions at time of launch mistakenly used values of temperature and RH representative of the ground check set and the GW rather than of the ambient conditions before launch. The bad values influenced only the first few samples and the remainder of the sounding values are correct. A procedural problem was identified and corrected. |
Measurements: | nsasondewnpnC1.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 | 1930 | 08/25/2006 | 1859 |
Subject: | NSA/GNDRAD/C1 - Incorrect calibration coefficients |
DataStreams: | nsagndrad20sC1.a0, nsagndrad20sC1.a1, nsagndrad60sC1.b1, nsagndradC1.00 |
Description: | BarrowC1, Gndrad. On Aug 11th the PSP-US was changed out and the Campbell program was changed to reflect this. However, an old program that uses the 4 coefficient PIR cal factors was used. The PIR-UIR was not changed out, however, the logger program coeffs reverted back to the 4 Coeffcients. The Eppley PIR-UIR coefficients for this S/N 30168F3 are : K0=0.0, K1(aka k)=.25253, K2= 1.0, K3=-4, Kr=0.0. |
Measurements: | nsagndrad60sC1.b1:
nsagndradC1.00:
nsagndrad20sC1.a1:
nsagndrad20sC1.a0:
|
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 |
---|---|---|---|
07/13/2006 | 0532 | 09/26/2006 | 2359 |
Subject: | NSA/SONDE/C1 - RH values offset due to error in ground check |
DataStreams: | nsasondewnpnC1.b1 |
Description: | Background: After installation of the latest software update , we began performing formal ground checks on RS92 radiosondes. By comparing the radiosonde readings with reference values in a controlled environment, the ground check is intended to ensure that the radiosonde sensors are in calibration before launch. The radisonde values during the ground check process are recorded automatically; the reference values are entered by the operator. If the radiosonde readings vary from the reference values, the system 'corrects' the radiosonde values. In the case of RH, the correction is applied as an offset (true RH = indicated RH + correction). Problem: Some operators misunderstood the ground-check procedure and entered the radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done during this period have RH values that are different from what they would be if the ground check procedure had been done correctly. Consequence: Because the RH corrections generally are small (averaging about 0.5% RH) and the precision of the reported RH data during this time period is 1% RH, some values will not be affected at all; others will be off by about 1% RH (still within the stated accuracy of the sensor). Furthermore, because entering the radiosonde value as the reference value results in a near zero 'correction,' one may view these soundings as being done without the ground check correction. Also note that the dew point value will be suspect as well. I am attaching below a listing of the soundings that were affected during the indicated time period. Users can see the magnitude of the problem and choose whether or not to apply an offset in RH. Note that application of the offset to the processed RH data (in the netCDF file) will not have the same effect of applying the correction to the absolutely raw data (before processing), but the differences should be insignificant. Also note that the corrections for each sounding are included in the netCDF header information. These attributes are named 'humidity_correction' and 'humidity_correction_2'. The values of RH indicated by the radiosonde while it is in the ground check set are in attributes 'humidity_gc_sonde' and 'humidity_gc_sonde_2.' There is an RH reading for each of the two RH sensors used in the RS92 radiosonde. Here is the list - RH1 and RH2 are the radiosonde readings in the ground check set. Ref is the reference value entered by the operator. The correcte reference value should be 0%. To obtain an approximation to the RH value that would have been recorded if the ground check had been done properly, subtract the Ref value from the indicated RH. YYYYMMDD HHMM SerialNo RH1 RH2 Ref 20060713 0532 B1924431 0.30 0.20 0.30 20060713 1751 B1854963 0.20 0.30 0.30 20060714 0521 B1924425 0.40 0.40 0.40 20060714 1739 B1854206 0.30 0.30 0.30 20060715 0522 B1715127 1.20 1.20 1.20 20060715 1737 B1854966 0.60 0.60 0.60 20060716 0508 B1715126 0.40 0.40 0.40 20060716 1732 B1844098 0.50 0.50 0.50 20060717 0517 B1914170 0.40 0.40 0.40 20060718 0516 B1914173 0.70 0.70 0.70 20060720 0523 B1854149 0.40 0.40 0.40 20060721 0517 B1914153 0.40 0.40 0.40 20060722 0521 B1844097 1.00 1.10 1.10 20060722 1730 B1914174 0.60 0.70 0.70 20060723 0537 B1714439 0.40 0.40 0.40 20060723 1734 B1734155 0.50 0.50 0.50 20060724 0529 B1134336 0.50 0.50 0.50 20060725 0525 B1754099 0.60 0.70 0.70 20060726 0541 B1844108 1.80 1.80 1.80 20060727 0520 B1714382 0.70 0.80 0.70 20060728 0531 B1854116 0.80 0.80 0.80 20060729 0527 B1724027 1.00 1.00 1.00 20060729 1726 B1714392 0.70 0.80 0.80 20060730 0522 B1854100 0.70 0.80 0.80 20060730 1724 B1854764 0.90 1.00 1.00 20060731 0515 B1664086 0.90 0.80 0.90 20060801 0520 B1724758 1.50 1.50 1.50 20060801 1729 B1754116 1.10 1.10 1.10 20060802 0518 B1724516 0.80 0.80 0.80 20060803 0523 B1674148 0.80 0.80 0.80 20060804 0532 B1754092 0.90 0.90 0.90 20060804 1727 B1844117 3.50 3.50 3.50 20060805 0531 B1714741 0.30 0.30 0.30 20060805 1728 B1754098 0.30 0.30 0.30 20060806 0528 B1844115 0.40 0.40 0.40 20060806 1728 B1914161 0.20 0.20 0.20 20060807 0530 B1714549 0.30 0.30 0.30 20060808 0517 B1844107 0.50 0.50 0.50 20060808 1744 B1914166 0.20 0.20 0.20 20060809 0527 B1914164 0.30 0.40 0.40 20060809 1736 B1914163 0.30 0.30 0.30 20060810 0521 B1914160 0.40 0.50 0.50 20060810 1745 B1744671 0.40 0.40 0.40 20060811 0525 B1854965 0.50 0.50 0.50 20060811 1753 B1724131 0.10 0.10 0.10 20060812 0527 B1754104 0.50 0.50 0.50 20060812 1740 B1854256 0.30 0.40 0.40 20060813 0522 B1854240 0.30 0.40 0.40 20060814 0525 B1714106 0.20 0.20 0.20 20060814 1742 B1854106 0.40 0.40 0.40 20060815 0534 B1914169 0.50 0.60 0.60 20060815 1734 B1854233 0.60 0.70 0.70 20060816 0539 B1724791 0.20 0.20 0.20 20060816 1732 B1914171 0.10 0.20 0.20 20060817 0535 B1354283 0.10 0.10 0.10 20060817 1740 B1354574 0.40 0.40 0.40 20060818 0516 B1354633 0.50 0.40 0.50 20060818 1744 B1364673 0.20 0.20 0.20 20060819 0538 B1364126 0.20 0.30 0.30 20060819 1745 B1354598 0.50 0.60 0.60 20060820 0532 B1354290 1.10 1.10 1.10 20060820 1729 B1354317 0.40 0.40 0.40 20060821 0530 B1354545 0.60 0.70 0.70 20060821 1728 B1354516 0.70 0.70 0.70 20060822 0524 B1354619 0.50 0.60 0.60 20060822 1728 B1364377 0.40 0.40 0.40 20060823 0533 B1354309 0.30 0.30 0.30 20060823 1730 B1354527 0.70 0.70 0.70 20060824 0533 B1354230 0.60 0.60 0.60 20060824 1812 B1354587 0.70 0.70 0.70 20060825 0517 B1354614 0.70 0.70 0.70 20060825 1730 B1354630 0.60 0.60 0.60 20060826 0537 B1334114 0.90 0.90 0.90 20060826 1734 B1354246 0.70 0.70 0.70 20060827 0508 B1354534 0.70 0.70 0.70 20060827 1729 B1354618 0.60 0.60 0.60 20060828 0517 B1354115 0.40 0.40 0.40 20060828 1738 B1354206 0.50 0.60 0.60 20060829 0516 B1354617 0.50 0.60 0.60 20060829 1717 B1354622 0.50 0.60 0.60 20060830 0511 B1354314 0.40 0.50 0.50 20060830 1732 B1354537 0.60 0.70 0.70 20060831 1802 B1354239 0.60 0.80 0.80 20060905 1724 B1354626 0.60 0.60 0.60 20060906 0522 B1354525 0.60 0.80 0.80 20060906 1734 B1354107 0.50 0.50 0.50 20060907 0537 B1354543 0.70 0.70 0.70 20060907 1803 B1354586 0.80 0.80 0.80 20060908 0531 B1354519 0.60 0.60 0.60 20060908 1728 B1354224 0.60 0.60 0.60 20060909 0534 B1354532 0.70 0.80 0.80 20060909 1732 B1354513 0.80 0.90 0.90 20060910 0516 B1354125 0.60 0.70 0.60 20060910 1727 B1354110 0.40 0.50 0.50 20060911 0528 B1354235 0.90 0.90 0.90 20060911 1849 B1354514 0.70 0.70 0.70 20060912 0525 B1354124 0.60 0.70 0.70 20060913 0534 B1344478 0.50 0.50 0.50 20060914 0520 B1354226 0.70 0.70 0.70 20060915 0529 B1344459 0.40 0.50 0.50 20060916 0532 B1344469 0.50 0.40 0.50 20060916 1732 B1354106 0.50 0.60 0.60 20060917 0527 B1354210 0.70 0.70 0.70 20060918 0533 B1354087 0.60 0.60 0.60 20060919 0526 B1354097 0.70 0.50 0.60 20060920 0516 B1344462 0.50 0.40 0.50 20060920 1810 B1354536 0.70 0.70 0.70 20060921 0534 B1354112 0.50 0.60 0.60 20060921 1800 B1344502 0.40 0.40 0.40 20060922 0525 B1354531 0.70 0.80 0.80 20060922 1736 B1354541 0.70 0.70 0.70 20060923 0519 B1354101 0.50 0.60 0.60 20060923 1738 B1354576 0.70 0.50 0.70 20060924 0536 B1354095 0.60 0.60 0.60 20060925 0536 B1354098 0.60 0.60 0.60 20060925 1755 B1354100 0.50 0.50 0.50 20060926 0531 B1334691 0.70 0.70 0.70 20060926 1742 B1354108 0.40 0.50 0.50 |
Measurements: | nsasondewnpnC1.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 |
---|---|---|---|
10/07/2006 | 0524 | 10/07/2006 | 0525 |
Subject: | NSA/SONDE/C1 - Incorrect surface values of T and RH |
DataStreams: | nsasondewnpnC1.b1 |
Description: | The radiosonde was launched too quickly after being removed from the ground check set. As a result, the system did not equilibrate with the local ground conditions and the automatically entered surface values are incorrect. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/2006 | 0532 | 10/28/2006 | 0710 |
Subject: | NSA/SONDE/C1 - RH sensor failure |
DataStreams: | nsasondewnpnC1.b1 |
Description: | It appears that one of the two RH sensors on this radiosonde was affected by ice after emerging from a low cold cloud. As a result the reported RH values oscillate by about 10 percent until the alternate heating cycle stops. I suspect the lower value is more close to correct, but can't be absolutely sure. |
Measurements: | nsasondewnpnC1.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 |
---|---|---|---|
12/29/2006 | 0517 | 12/29/2006 | 0518 |
Subject: | NSA/SONDE/C1 - Incorrect surface RH value |
DataStreams: | nsasondewnpnC1.b1 |
Description: | For an unknown reason the surface RH was reported a 0%. Becuase these values are entered automatically by the system, this is NOT likely an operator error. Examination of the raw data shows that the surface RH at launch time was approximately 81.2 %RH. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2007 | 1955 | 02/27/2007 | 2131 |
Subject: | NSA/SONDE/C1 - Temperature sensor broke at launch |
DataStreams: | nsasondewnpnC1.b1 |
Description: | The temperature sensor on this sonde broke at launch. As a result all the thermodynamic data are incorrect. The wind data are OK, though there will be some uncertainty in the altitude values. This sounding was done at a non-standard time and it isn't clear whether it was delayed for some reason or a RHUBC sounding. In either case, there is no fix. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/22/2007 | 2010 | 12/13/2007 | 2310 |
Subject: | NSA/RWP/C1 - Instrument problem |
DataStreams: | nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0 |
Description: | When data returned to ingest the windcon wind direction and wind speeds are not comparing well with the co-located sondes. Wind direction values are constant, with no changes. Problem is that the phase shifter wiring was bad when it was reinstalled. |
Measurements: | nsa915rwpwindspecC1.a0:
nsa915rwpwindconC1.a1:
nsa915rwpwindmomC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/02/2007 | 2300 | 10/04/2007 | 0145 |
Subject: | NSA/GNDRAD/C1 - Preventive maintenance |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | Preventive maintenance including ventilator repairs and instrument changeout during this time resulted in data that are not scientifically relevant. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/23/1999 | 0000 | 11/28/1999 | 2359 |
01/28/2000 | 0000 | 02/03/2000 | 2341 |
09/21/2000 | 1619 | 09/24/2000 | 2258 |
03/15/2002 | 2052 | 03/21/2002 | 1502 |
07/27/1999 | 2150 | 08/05/1999 | 2359 |
08/06/1999 | 1208 | 08/07/1999 | 2359 |
10/03/1999 | 0000 | 11/04/1999 | 2359 |
Subject: | NSA/GNDRAD/C1 - Missing data |
DataStreams: | nsagndrad60sC1.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/2007 | 0130 | 10/25/2007 | 2149 |
Subject: | NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | Installed Gndrad PSP (upwelling shortwave hemispheric irradiance) had calibration coefficient RS applied when it should have used Rsc. ARM is using IR corrected coefficients Rsc@45 and CFc@45 for PSPs deployed at all facilities. PSP #32012F3 should use RSc@45=109.39 and not Rs@45=110.97. Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by: US(new) = (US(old) / 110.97 ) * 109.39 Reprocessing completed March 2008. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2008 | 0330 | 09/15/2008 | 1930 |
Subject: | NSA/GNDRAD/C1 - Upwelling PIR ventilator fan failure |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | The PIR exhibited a positive bias of approximately 6 W/m2 compared to the upwelling IRT due to ventilator fan failure. Thus, the up_long_hemisp, data stream is high by about 6 W/m2. Bias is not consistent and depends on atmospheric conditions. Either disregard the up_long_hemisp data or use the IRT for an estimate of the up_long_hemisp values during this time period. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/03/2000 | 0000 | 03/03/2003 | 2359 |
Subject: | NSA/GNDRAD/C1 - Net radiometer removed |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The net radiometer was removed from the NSA.C1 GNDRAD instrument suite on Feb 3, 2000. Net rad variables were filled with garbage data until Sept 23, 2000 and with missing values (-9999) until 20041103. The net rad variables were removed from the netcdf files after 20041103. A reprocessing task (RID-526) has been submitted to the queue to address the need to add metadata to the NSA.C1 GNDRAD netcdf files documenting the missing data as well as to move toward a consistent datastream format throughout time. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2000 | 0000 | 06/19/2001 | 1830 |
Subject: | NSA/GNDRAD/C2 - Reprocess: IRT insufficiently heated |
DataStreams: | nsagndrad60sC2.b1 |
Description: | IRT had insufficient heating to maintain an internal reference temperature above 0 degrees C. Measurements of surface temperature were over-estimated when instrument was below freezing. Data will be reprocessed, but users can correct data using the following correction factor: If T_reference < -5?C, then IRT_corrected = (IRT_original - 32.993K)/0.87238 where T_reference can be estimated with the ambient temperature (e.g. inst_up_long_hemisp_dome_temp or inst_up_long_dome_temp) |
Measurements: | nsagndrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/21/2009 | 0500 | 06/24/2009 | 0500 |
Subject: | NSA/SONDE/C1 - Wind data missing |
DataStreams: | nsasondewnpnC1.b1 |
Description: | A GPS problem associated with Vaisala BBSS ground station software issues caused the ground stations to enter into an error state when using GPS wind finding. In some instances, the flight was aborted due to the error state and not data was collected. A workaround was developed to allow sondes to be launched without collecting wind data. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2009 | 1600 | 06/01/2009 | 1700 |
06/29/2009 | 1600 | 06/29/2006 | 1700 |
06/26/2009 | 1600 | 06/26/2009 | 1700 |
06/22/2009 | 1600 | 06/22/2009 | 1700 |
06/19/2009 | 1600 | 06/18/2009 | 1700 |
06/12/2009 | 1600 | 06/12/2009 | 1700 |
Subject: | NSA/RWP/C1 - Missing data blocks |
DataStreams: | nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindspecC1.a0, nsa915rwpwindmomC1.a0 |
Description: | The nsa915rwpC1 instrument was being re-booted at the end of the hour resulting in the unnecessary data loss. The time of re-boot was modified to the middle of the hour to avoid the 1-2 data loss period. |
Measurements: | nsa915rwpwindspecC1.a0:
nsa915rwpwindconC1.a1:
nsa915rwptempmomC1.a0:
nsa915rwpwindmomC1.a0:
nsa915rwptempspecC1.a0:
nsa915rwptempconC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/2009 | 0000 | 08/05/2009 | 0600 |
Subject: | NSA/SONDE/C1 - Wind data missing |
DataStreams: | nsasondewnpnC1.b1 |
Description: | After some power disruptions, the Power Supply board of the SPS220 ground station was damaged. The damage caused the supply to not have enough power to run the GPS board. Switching to the back up DigiCora II did not alleviate the problem as the fix for GPS failure to all Vaisala sonde products had not been installed. A different P/S was found and sent up to replace the failed one. |
Measurements: | nsasondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2011 | 2211 | 07/25/2011 | 1842 |
Subject: | NSA/GNDRAD/C1 - Reprocessed: Miscalibrated upwelling SW |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | On 7/20/2011 2211GMT Ops replaced the Gndrad upwelling shortwave instrument (PSP) but the calibration coefficients weren't changed until 07/25/2011 1842GMT. The up_short_hemisp data were reprocessed and archived in September 2011. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/27/2011 | 1700 | 05/02/2011 | 0100 |
Subject: | NSA/GNDRAD/C1 - Incorrect data during power outage |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | During a power outage the IRT data were incorrect. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|