DQR ID | Subject | Data Streams Affected |
---|---|---|
D010504.2 | NSA/MWR/C2 - Missing data | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D021004.17 | TWP/MWR/C3 - Elevated Skybrightness Temperatures | twpmwrlosC3.a1, twpmwrlosC3.b1 |
D021004.18 | TWP/MWR/C3 - Wet Window Flag not correct | twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1 |
D021017.1 | NSA/MWR/C1 - MWR digital board failure | nsamwrlosC1.a1, nsamwrlosC1.b1 |
D030312.6 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | nsamwrlosC1.a1, nsamwrlosC1.b1 |
D030312.7 | NSA/MWR/C2 - Intermittent Negative Sky Brightness Temperatures | nsamwrlosC2.b1 |
D030312.8 | TWP/MWR/C3 - Intermittent Negative Sky Brightness Temperatures | twpmwrlosC3.b1, twpmwrlosC3.a1 |
D030312.9 | TWP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | twpmwrlosC1.b1 |
D030515.3 | NSA/MWR/C1 - no air temperature signal | nsamwrC1.00, nsamwrlosC1.b1, nsamwrtipC1.a1 |
D030724.1 | NSA/MWR/C2 - Thermally unstable | nsamwrlosC2.b1 |
D030822.11 | TWP/MWR/C3 - min/max/delta values incorrect | twpmwrlosC3.b1 |
D030822.7 | NSA/MWR/C1 - min/max/delta values incorrect | nsamwrlosC1.b1 |
D040102.4 | NSA/MWR/C2 - Heater problem | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D040116.1 | NSA/MWR/C1 - damaged window | nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaqmemwrcolC1.c1 |
D040211.4 | TWP/MWR/C2 - thermal instability | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D040220.1 | TWP/MWR/C1 - wrong azimuth | twpmwrlosC1.b1 |
D040920.1 | TWP/MWR/C2 - Data collection problem | twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.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 |
D050202.1 | NSA/MWR/C2 - no air temperature signal | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D050203.1 | NSA/MWR/C1 - poor air temperature values | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D050310.3 | TWP/MWR/C2 - Heater problem | twp5mwravgC2.c1, twpmwrlosC2.b1, twpmwrtipC2.a1 |
D050524.2 | TWP/MWR/C2 - mixer temperature | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D050725.10 | TWP/MWR/C2 - Reprocessed: Revised Retrieval Coefficients | twp5mwravgC2.c1, twpmwrlosC2.b1, twpqmemwrcolC2.c1 |
D050725.11 | TWP/MWR/C3 - Reprocess - Revised Retrieval Coefficients | twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1 |
D050725.7 | NSA/MWR/C1 - Reprocess: Revised Calibration Coefficients | nsa5mwravgC1.c1, nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaqmemwrcolC1.c1 |
D050725.8 | NSA/MWR/C2 - Reprocessed: Revised Retrieval Coefficients | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D050725.9 | TWP/MWR/C1 - Reprocessed: Revised Retrieval Coefficients | twp5mwravgC1.c1, twpmwrlosC1.b1, twpmwrtipC1.a1 |
D050809.2 | NSA/MWR/C1 - Possible loss of accuracy due to missing blower | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D050830.1 | NSA/MWR/C2 - Thermally unstable | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D050920.2 | NSA/MWR/C1 - Instrument problem, Heater problem | nsamwrlosC1.b1, nsamwrC1.00 |
D050928.1 | TWP/MWR/C1 - New software version (4.15) installed | twpmwrtipC1.a1, twpmwrlosC1.b1 |
D050928.2 | TWP/MWR/C2 - New software version (4.15) installed | twpmwrtipC2.a1, twpmwrlosC2.b1 |
D050928.3 | NSA/MWR/C1 - New software version (4.15) installed | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D050928.4 | NSA/MWR/C2 - New software version (4.15) installed | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D050928.5 | TWP/MWR/C3 - New software version (4.15) installed | twpmwrlosC3.b1, twpmwrtipC3.a1 |
D050930.1 | NSA/MWR/C1 - Reprocess: wrong calibration | nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1 |
D051020.1 | NSA/MWR/C1 - Incorrect time stamp | nsamwrC1.00, nsamwrlosC1.b1 |
D051114.2 | TWP/MWR/C3 - Instrument failure, Power outage | twpmwrtipC3.a1, twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrC3.00 |
D051214.1 | TWP/MWR/C3 - REPROCESS- Updated retrieval coefficients | twpmwrlosC3.b1, twpmwrtipC3.a1 |
D060223.1 | NSA/MWR/C2 - Frosting/Condensation | nsamwrC2.00, nsamwrlosC2.b1, nsamwrtipC2.a1 |
D060601.1 | TWP/MWR/C3 - Site shutdown | twpmwrC3.00, twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1 |
D060717.4 | NSA/MWR/C1 - TKAIR sensor failure | nsamwrlosC1.b1 |
D060818.12 | NSA/MWR/C2 - Spikes in air temperature readings | nsamwrlosC2.b1 |
D061002.1 | TWP/MWR/C2 - Missing data | twp5mwravgC2.c1, twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1 |
D061114.1 | NSA/MWR/C1 - Rain sensor always on | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D061114.2 | TWP/MWR/C1 - Radiometer failure | twpmwrC1.00, twpmwrlosC1.b1, twpmwrtipC1.a1 |
D061114.4 | TWP/MWR/C3 - Sun in field of view of radiometer | twpmwrlosC3.b1, twpmwrtipC3.a1 |
D061121.1 | TWP/MWR/C2 - Missing Data | twpmwrlosC2.b1 |
D061213.3 | TWP/MWR/C2 - Reprocessed: New Calibration coefficients | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D070105.1 | TWP/MWR/C1 - Missing data | twpmwrlosC1.b1, twpmwrtipC1.a1 |
D070412.3 | TWP/MWR/C1/C2 - Sun in the field of view | twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1 |
D070613.1 | TWP/MWR/C1 - Intermittent data | twpmwrlosC1.b1, twpmwrtipC1.a1 |
D071208.1 | TWP/MWR/C1 - Incorrect ambient temperature readings | twpmwrlosC1.b1, twpmwrtipC1.a1 |
D080512.1 | NSA/MWR/C1 - Spikes in air temperature readings | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D080512.2 | NSA/MWR/C2 - Possible bias on measurements | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D080623.1 | NSA/MWR/C1 - Missing surface air temperature data | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D080811.1 | NSA/MWR/C2 - Occasional thermal instability | nsa5mwravgC2.c1, nsamwrlosC2.b1, nsamwrtipC2.a1 |
D081013.2 | TWP/MWR/C1 - Short periods of wrong ambient temperature | twpmwrlosC1.b1, twpmwrtipC1.a1 |
D081216.1 | TWP/MWR/C2 - Incorrect ambient temperature during rain | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D090114.2 | NSA/MWR/C1 - Incorrect brightness temperatures and retrievals | nsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1 |
D090114.4 | TWP/MWR/C1 - Ambient temperature data missing | twpmwrlosC1.b1, twpmwrtipC1.a1 |
D090417.1 | NSA/MWR/C1 - RFI screening test | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D090417.3 | TWP/MWR/C2 - Intermittent data | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D090417.5 | NSA/MWR/C1 - High noise in 23.8-GHz channel | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D090611.1 | NSA/MWR/C1 - Intermittent air temperature readings | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D090611.2 | NSA/MWR/C1 - Air temperature readings missing | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D100224.5 | NSA/MWR/C2 - Radiometer unstable | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D100326.1 | NSA/MWR/C1 - Elevated noise | nsamwrlosC1.b1, nsamwrtipC1.a1 |
D100830.2 | NSA/MWR/C2 - Temperature instability | nsamwrlosC2.b1, nsamwrtipC2.a1 |
D101025.1 | NSA/MWR/C1 - Missing data | nsamwrtipC1.a1, nsamwrlosC1.b1 |
D110221.2 | TWP/MWR/C1 - Intermittent data due to computer problems | twpmwrtipC1.a1, twpmwrlosC1.b1 |
D110617.1 | TWP/MWR/C2 - Missing ambient temperature | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D111214.1 | TWP/MWR/C1 - Rain events not flagged | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/2002 | 0000 | 04/03/2002 | 0151 |
04/15/2002 | 2324 | 04/17/2002 | 0108 |
07/21/2002 | 1800 | 07/23/2002 | 0448 |
12/18/2002 | 2218 | 01/28/2003 | 2115 |
09/22/2005 | 1932 | 10/01/2005 | 1700 |
08/28/2006 | 2000 | 04/15/2008 | 1519 |
11/10/2008 | 1900 | 11/13/2008 | 2309 |
03/25/2009 | 1859 | 03/28/2009 | 2033 |
10/22/2009 | 0716 | 11/16/2009 | 1700 |
02/17/2003 | 1842 | 02/25/2003 | 2044 |
07/15/2001 | 1800 | 07/17/2001 | 1650 |
11/17/2001 | 0300 | 11/28/2001 | 2332 |
01/21/2002 | 2221 | 01/23/2002 | 0417 |
06/23/2001 | 0000 | 06/25/2001 | 1820 |
07/01/2001 | 2000 | 07/04/2001 | 1745 |
02/03/2001 | 0208 | 02/05/2001 | 0014 |
04/16/2000 | 1536 | 04/18/2000 | 0540 |
06/09/2000 | 0605 | 06/12/2000 | 0408 |
09/28/2000 | 0036 | 09/30/2000 | 0132 |
03/11/2000 | 0218 | 03/22/2000 | 0449 |
01/11/2000 | 0004 | 01/20/2000 | 0428 |
12/28/1999 | 0004 | 01/08/2000 | 0008 |
10/26/1999 | 0003 | 11/02/1999 | 0008 |
11/09/1999 | 0004 | 12/27/1999 | 0008 |
Subject: | NSA/MWR/C2 - Missing data |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/2002 | 2212 | 10/02/2002 | 2359 |
Subject: | TWP/MWR/C3 - Elevated Skybrightness Temperatures |
DataStreams: | twpmwrlosC3.a1, twpmwrlosC3.b1 |
Description: | For an unknown reason, the MWR began to exhibit elevated sky brightness temperatures. This problem was corrected when the instrument was power-cycled. |
Measurements: | twpmwrlosC3.b1:
twpmwrlosC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/28/2002 | 0000 | 10/02/2002 | 2359 |
Subject: | TWP/MWR/C3 - Wet Window Flag not correct |
DataStreams: | twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | The moisture sensor threshold voltage in the MWR configuration file was set to the wrong value for the new heater/blower assembly. This caused the wet window flag to not be set high during times of rain. |
Measurements: | twpmwrlosC3.b1:
twpmwrlosC3.a1:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2002 | 0824 | 03/16/2002 | 0056 |
Subject: | NSA/MWR/C1 - MWR digital board failure |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | A power failure at the site apparently damaged some of the components of the digital board. The MWR was replaced with a spare unit and returned to the manufacturer for repair. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/1999 | 1800 | 09/16/2002 | 1820 |
Subject: | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | Several related and recurring problems with the MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data, spikes in the data, negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program. Because these all initially appeared to be hardware-related problems, the instrument mentor and site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which did not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/15/2000 | 0600 | 09/16/2002 | 1900 |
Subject: | NSA/MWR/C2 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | nsamwrlosC2.b1 |
Description: | Several related and recurring problems with the MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data, spikes in the data, negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program. Because these all initially appeared to be hardware-related problems, the instrument mentor and site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which did not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | nsamwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2002 | 0151 | 10/02/2002 | 2359 |
Subject: | TWP/MWR/C3 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | twpmwrlosC3.b1, twpmwrlosC3.a1 |
Description: | Several related and recurring problems with the MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data, spikes in the data, negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program. Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which did not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program (MWR version 4.12). |
Measurements: | twpmwrlosC3.b1:
twpmwrlosC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2002 | 2200 | 10/31/2002 | 2220 |
Subject: | TWP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | twpmwrlosC1.b1 |
Description: | Several related and recurring problems with the MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data, spikes in the data, negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program. Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which did not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/2003 | 1906 | 01/15/2005 | 0054 |
Subject: | NSA/MWR/C1 - no air temperature signal |
DataStreams: | nsamwrC1.00, nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air temperature sensor failed to properly report. It was determined that the wires carrying the signal to the analog board did not conform to the standard expected by the upgraded blower. The problem was corrected by changing the wiring and modifying the MWR software to read the signal from the appropriate corresponding channel. |
Measurements: | nsamwrlosC1.b1:
nsamwrC1.00:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/19/2003 | 2324 | 07/21/2003 | 0824 |
Subject: | NSA/MWR/C2 - Thermally unstable |
DataStreams: | nsamwrlosC2.b1 |
Description: | The MWR became thermally unstable during periods when the ambient temperature exceeded about 28C. This situation was corrected when the mixer temperature was manually increased to about 35C. Data are suspect when the blackbody temperature, tkbb, exceeds 296 K. |
Measurements: | nsamwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2002 | 0152 | 02/09/2003 | 2359 |
Subject: | TWP/MWR/C3 - min/max/delta values incorrect |
DataStreams: | twpmwrlosC3.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | twpmwrlosC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/02/1998 | 0000 | 02/08/2003 | 2359 |
Subject: | NSA/MWR/C1 - min/max/delta values incorrect |
DataStreams: | nsamwrlosC1.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/23/2003 | 0000 | 01/09/2004 | 2030 |
Subject: | NSA/MWR/C2 - Heater problem |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | The MWR heater did not appear to operate when moisture was present. The heater sensitivity was adjusted. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/2004 | 2007 | 01/09/2004 | 0032 |
Subject: | NSA/MWR/C1 - damaged window |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaqmemwrcolC1.c1 |
Description: | The MWR dielectric window was damaged by snow from a snow blower and replaced. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
nsaqmemwrcolC1.c1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2004 | 1958 | 01/31/2004 | 2059 |
Subject: | TWP/MWR/C2 - thermal instability |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | The MWR required an unusually long time to reach thermal stability after a 4-day outage due to a power failure that damaged the blower/heater assembly. Also during this period, the heater, which had been replaced, appears to have been on continously, causing the data to be inappropriately flagged. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/1996 | 0000 | 02/18/2004 | 2250 |
Subject: | TWP/MWR/C1 - wrong azimuth |
DataStreams: | twpmwrlosC1.b1 |
Description: | The MWR was initially installed at an azimuth angle defined as 180 degrees but the value in the configuration file was not changed from the default of 0 degrees. In examining photos taken during the installation of the AWS tower, I noticed that the MWR was rotated opposite the normal orientation. The value in the configuration file was changed to reflect the actual azimuth of the instrument. |
Measurements: | twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/27/2004 | 2000 | 09/24/2004 | 0219 |
Subject: | TWP/MWR/C2 - Data collection problem |
DataStreams: | twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | Large, frequent data gaps occurred due to a failing laptop computer. The problem was corrected when a new computer was installed. |
Measurements: | twpmwrtipC2.a1:
twpmwrC2.00:
twpmwrlosC2.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: | 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 |
---|---|---|---|
02/25/2003 | 2044 | 11/18/2004 | 2304 |
Subject: | NSA/MWR/C2 - no air temperature signal |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air temperature sensor failed to properly report. It was determined that the wires carrying the signal to the analog board did not conform to the standard expected by the upgraded blower. The problem was corrected by modifying the MWR software to read the signal from the appropriate corresponding channel. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2005 | 0054 | 01/19/2005 | 1143 |
Subject: | NSA/MWR/C1 - poor air temperature values |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | After the air temperature sensor was rewired due to a change with the new blower (D030515.3), the measurement was initially incorrect. There is no apparent cause for the bad signal or its improvement. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2005 | 2340 | 03/14/2005 | 1650 |
Subject: | TWP/MWR/C2 - Heater problem |
DataStreams: | twp5mwravgC2.c1, twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | When the wiring of the air temperature sensor was checked the heater apparently began activating too often. |
Measurements: | twpmwrtipC2.a1:
twp5mwravgC2.c1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2005 | 2340 | 04/19/2005 | 0242 |
Subject: | TWP/MWR/C2 - mixer temperature |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | When the wiring of the air temperature sensor was checked the mixer temperature unexpectedly decreased 4 degrees. It increased to its normal value when the dielectric window was replaced. The problem was probably caused by a loose and/or corroded connection. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/27/2002 | 0600 | 06/30/2005 | 2100 |
Subject: | TWP/MWR/C2 - Reprocessed: Revised Retrieval Coefficients |
DataStreams: | twp5mwravgC2.c1, twpmwrlosC2.b1, twpqmemwrcolC2.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). The Rosenkranz-based retrieval coefficients became active at TWP.C2 20020427.0600. The MONORTM-based retrieval coefficients became active at TWP.C2 20050630.2100. Note: The TWP.C2 data for 19981028-20050630 have been reprocessed to apply the MONORTM-based retrievals for all time. The reprocessed data were archived 20061003. |
Measurements: | twpqmemwrcolC2.c1:
twp5mwravgC2.c1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2002 | 0151 | 06/30/2005 | 2100 |
Subject: | TWP/MWR/C3 - Reprocess - Revised Retrieval Coefficients |
DataStreams: | twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients was active at TWP.C3 from inception of the data, 20020227.0151. The MONORTM-based retrieval coefficients became active at TWP.C3 20050630.2100. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | twpmwrlosC3.b1:
twpmwrlosC3.a1:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2002 | 1900 | 06/29/2005 | 0000 |
Subject: | NSA/MWR/C1 - Reprocess: Revised Calibration Coefficients |
DataStreams: | nsa5mwravgC1.c1, nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaqmemwrcolC1.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active at NSA.C1 20020425.1900. The MONORTM-based retrieval coefficients became active at NSA.C1 20050629.0000. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | nsa5mwravgC1.c1:
nsamwrlosC1.a1:
nsamwrlosC1.b1:
nsaqmemwrcolC1.c1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/18/1999 | 0000 | 06/29/2005 | 0000 |
Subject: | NSA/MWR/C2 - Reprocessed: Revised Retrieval Coefficients |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid water absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). The Rosenkranz-based retrieval coefficients became active at NSA.C2 20020418.1700. The MONORTM-based retrieval coefficients became active at NSA.C2 20050629.0000. Note: The NSA.C2 MWRLOS data for 19991018-20050630 have been reprocessed to apply the MONORTM-based retrievals for all time. The reprocessed data were archived in March 2007. The TIP data have not been reprocessed. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/04/2002 | 0200 | 06/30/2005 | 2100 |
Subject: | TWP/MWR/C1 - Reprocessed: Revised Retrieval Coefficients |
DataStreams: | twp5mwravgC1.c1, twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). The Rosenkranz-based retrieval coefficients became active at TWP.C1 20020504.0200. The MONORTM-based retrieval coefficients became active at TWP.C1 20050630.2100. Note: The TWP.C1 data for 19961011-20050630 have been reprocessed to apply the |
Measurements: | twp5mwravgC1.c1:
twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/09/2005 | 2354 | 07/20/2005 | 0000 |
Subject: | NSA/MWR/C1 - Possible loss of accuracy due to missing blower |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | On 7/09 the MWR blower failed. The blower prevents snow and liquid drop from accumulating on the window. Accumulation of snow or liquid results in a loss of accuracy of the instrument. The loss of accuracy has consequencies on the retrieved liquid water path and precipitable water vapor. Usually there will be an overestimation of liquid and vapor. The blower was repaired and reinstalled on 7/20. Between 7/9 and 7/20 the tkair variable is unavailable as well. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/12/2005 | 1200 | 08/16/2005 | 2300 |
Subject: | NSA/MWR/C2 - Thermally unstable |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | Between 08/12 and 08/17 the instrument displayed some intermittent thermal instability. Measurement accuracy may be degraded during these time periods. Periods of thermal instability may be identified by checking the black body temperature Tkbb. If Tkbb > 303K (30 C) the instrument is unstable. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/13/2005 | 0000 | 10/18/2005 | 2000 |
Subject: | NSA/MWR/C1 - Instrument problem, Heater problem |
DataStreams: | nsamwrlosC1.b1, nsamwrC1.00 |
Description: | The heater of the MWR was ON all the time even when the moisture sensor was dry. Jim Liljegren suspected a problem with the relay that activates the heater. The suggested action was to send the faulty assembly to SGP for repair and get a spare unit from SGP. The spare unit was sent on 9/15 and was installed on 10/18. |
Measurements: | nsamwrlosC1.b1:
nsamwrC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2002 | 2200 | 09/13/2005 | 1854 |
Subject: | TWP/MWR/C1 - New software version (4.15) installed |
DataStreams: | twpmwrtipC1.a1, twpmwrlosC1.b1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in October 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software version (4.15) was installed on 9/13/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2002 | 2101 | 09/15/2005 | 1424 |
Subject: | TWP/MWR/C2 - New software version (4.15) installed |
DataStreams: | twpmwrtipC2.a1, twpmwrlosC2.b1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in November 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software version (4.15) was installed on 9/15/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/16/2002 | 1820 | 09/15/2005 | 1702 |
Subject: | NSA/MWR/C1 - New software version (4.15) installed |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in September 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software version (4.15) was installed on 9/15/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/2002 | 0251 | 09/15/2005 | 1722 |
Subject: | NSA/MWR/C2 - New software version (4.15) installed |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in September 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software version (4.15) was installed on 9/15/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/03/2002 | 0000 | 09/20/2005 | 2156 |
Subject: | TWP/MWR/C3 - New software version (4.15) installed |
DataStreams: | twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in October 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software version (4.15) was installed on 9/20/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | twpmwrlosC3.b1:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2005 | 1945 | 09/06/2005 | 1500 |
Subject: | NSA/MWR/C1 - Reprocess: wrong calibration |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | When MWR#20 was returned to service on 9/1/2005, the calibration had changed as a result of the repairs made by Radiometrics and the RF deck temperature had been set to 325K for testing. On 9/2, the temperature was decreased to 307K to prevent thermal instability in winter and the calibration was changed in the configuration file with the values supplied on the repair report. The data need to be reprocessed with the calibration coefficients that were automatically derived after these changes were put into affect. They are: tnd_nom23=185.621, tnd_nom31=158.801, tc23=-0.022, tc31=-0.039. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/2005 | 2200 | 09/30/2005 | 2000 |
Subject: | NSA/MWR/C1 - Incorrect time stamp |
DataStreams: | nsamwrC1.00, nsamwrlosC1.b1 |
Description: | On Sept 27 the motherboard of the MWR computer was replaced. Following the replacement, the date on the computer was not set to the correct time of day, therefore the date and time in the files were wrong. The time on the computer was reset on Sept. 30. Time stamps between Sept. 27 and Sept. 30 were later corrected based on gathered information, however they may have as much as 5 minutes of uncertainty. |
Measurements: | nsamwrlosC1.b1:
nsamwrC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/2005 | 0453 | 12/10/2005 | 0000 |
Subject: | TWP/MWR/C3 - Instrument failure, Power outage |
DataStreams: | twpmwrtipC3.a1, twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrC3.00 |
Description: | A lightning strike sent the MWR offline. The radiometer suffered extensive damage, was removed from the site and sent to the vendor for repair. A spare radiometer was sent to the TWP/C3 site and was installed on 12/07. However, some hardaware communication issues prevented data collection until 12/10. |
Measurements: | twpmwrlosC3.b1:
twpmwrlosC3.a1:
twpmwrC3.00:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2002 | 0000 | 12/12/2005 | 1600 |
Subject: | TWP/MWR/C3 - REPROCESS- Updated retrieval coefficients |
DataStreams: | twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | The statistical retrieval coefficients currently in use at the Darwin (TWP/C3) site were developed using radiosonde RS80 launched from Manus Island during the TOGA-COARE experiment. Data from Manus Island have minimal seasonality, therefore a single, annual set of coefficients was used at all three sites. Retrievals using these coefficients are sufficiently accurate especially during the local summer months (December-January). However, the Darwin site displays a summer/winter seasonality resulting in larger differences during the southern winter (May- June). Since we now have enough radiosonde soundings (RS80 and RS90) available at the Darwin site, the Darwin coefficients were modified to better reflect the local seasonality. |
Measurements: | twpmwrlosC3.b1:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2006 | 0000 | 02/24/2006 | 2359 |
Subject: | NSA/MWR/C2 - Frosting/Condensation |
DataStreams: | nsamwrC2.00, nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | Doug reported freezing winds and ice accumulation on the MWR cover and radome. This may affect data quality and calibration. On 2/24 Doug attempted to slowly thaw the cover and clear the window. From 2/22 to 2/24 the LWP and PWV reported by the MWR are near zero. These data are probably affected by the frost accumulated on the radiometer window. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
nsamwrC2.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/24/2006 | 0000 | 04/25/2006 | 2259 |
Subject: | TWP/MWR/C3 - Site shutdown |
DataStreams: | twpmwrC3.00, twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | On 4/24, the site was shutdown in preparation for a cyclone. Instruments were back up on 4/25 at 22:59 |
Measurements: | twpmwrlosC3.b1:
twpmwrlosC3.a1:
twpmwrC3.00:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/14/2006 | 0000 | 07/28/2006 | 0000 |
Subject: | NSA/MWR/C1 - TKAIR sensor failure |
DataStreams: | nsamwrlosC1.b1 |
Description: | Between 7/14 and 7/28 the tkair variable is missing most of the time and sometimes has large negative spikes. On 7/28, the sensor was cleaned of corrosion and the readings came back to normal. |
Measurements: | nsamwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/17/2006 | 0000 | 08/01/2006 | 2359 |
Subject: | NSA/MWR/C2 - Spikes in air temperature readings |
DataStreams: | nsamwrlosC2.b1 |
Description: | The tkair variable has occasional spikes due to sensor corrosion. On 8/1, the temperature sensor was replaced. |
Measurements: | nsamwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/14/2006 | 1500 | 11/27/2006 | 1900 |
Subject: | TWP/MWR/C2 - Missing data |
DataStreams: | twp5mwravgC2.c1, twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | The heater blower assembly was causing the fuse to blow. The instrument was taken offline until a replacement arrives. |
Measurements: | twpmwrtipC2.a1:
twp5mwravgC2.c1:
twpmwrC2.00:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2006 | 1100 | 10/23/2006 | 1600 |
Subject: | NSA/MWR/C1 - Rain sensor always on |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | The rain sensor was always on between 10/5 and 10/23 2006. The user should be aware that not all data flagged as rainy are actually rainy. The problem was caused by a shift in the sensitivity of the rain sensor and was corrected by changing the sensor threshold in the configuration file. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2006 | 1000 | 01/30/2007 | 0457 |
Subject: | TWP/MWR/C1 - Radiometer failure |
DataStreams: | twpmwrC1.00, twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | The instrument stopped responding and had to be powered off. Suspect cause of failure is a faulty digital board. |
Measurements: | twpmwrC1.00:
twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/20/2006 | 0000 | 11/09/2006 | 0400 |
10/15/2008 | 0000 | 11/08/2008 | 0000 |
10/15/2009 | 0000 | 11/10/2009 | 0000 |
02/01/2010 | 0000 | 03/01/2010 | 0000 |
02/01/2011 | 0000 | 03/01/2011 | 0000 |
10/15/2011 | 0000 | 11/10/2011 | 0000 |
Subject: | TWP/MWR/C3 - Sun in field of view of radiometer |
DataStreams: | twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | Each day around local noon (2-3 AM UTC), there is an increase in the brightness temperature due to the sun being in the field of view of the radiometer. |
Measurements: | twpmwrlosC3.b1:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/02/1998 | 2112 | 11/06/1998 | 2140 |
07/02/2000 | 2000 | 07/04/2000 | 0047 |
02/09/2002 | 2300 | 02/11/2002 | 2300 |
01/23/2004 | 1100 | 01/27/2004 | 1957 |
05/27/2005 | 1143 | 05/29/2005 | 2132 |
Subject: | TWP/MWR/C2 - Missing Data |
DataStreams: | twpmwrlosC2.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/27/2006 | 1900 | 11/30/2006 | 0700 |
Subject: | TWP/MWR/C2 - Reprocessed: New Calibration coefficients |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | On 11/27 a spare radiometer was installed to replace a faulty radiometer. Once the radiometer started to collect data it used the default calibration coefficients until it collected enough tip data to determine its own coefficients. The data were reprocessed to apply corrected calibrations and the reprocessed data were archived 20061222. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/1996 | 2338 | 12/11/1996 | 0003 |
01/05/2011 | 2300 | 01/07/2011 | 0310 |
02/25/2011 | 1300 | 03/07/2011 | 0400 |
03/16/2011 | 1900 | 03/31/2011 | 0100 |
10/22/2011 | 2200 | 10/25/2011 | 0400 |
10/20/1999 | 0500 | 10/22/1999 | 0600 |
01/14/2000 | 0800 | 01/16/2000 | 0342 |
01/14/2006 | 1258 | 01/16/2006 | 0638 |
10/01/1999 | 0900 | 10/18/1999 | 0000 |
02/28/1997 | 0118 | 06/27/1997 | 2048 |
11/06/1997 | 1959 | 11/12/1997 | 1800 |
01/05/1998 | 0204 | 01/08/1998 | 2048 |
04/21/1998 | 0017 | 04/29/1998 | 1803 |
09/13/1998 | 0759 | 09/20/1998 | 0900 |
11/20/1998 | 2226 | 11/27/1998 | 1026 |
02/27/1999 | 0600 | 03/02/1999 | 0159 |
03/06/1999 | 0800 | 03/09/1999 | 1807 |
09/03/1999 | 0300 | 09/10/1999 | 0400 |
Subject: | TWP/MWR/C1 - Missing data |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2007 | 0000 | 04/02/2007 | 2359 |
03/01/2008 | 0000 | 04/02/2008 | 2359 |
09/10/2008 | 0000 | 10/12/2008 | 0000 |
03/01/2009 | 0000 | 04/02/2009 | 2359 |
09/11/2009 | 0000 | 10/10/2009 | 2359 |
03/01/2010 | 0000 | 04/02/2010 | 2359 |
03/01/2011 | 0000 | 04/02/2011 | 2359 |
09/13/2011 | 0000 | 10/09/2011 | 0000 |
Subject: | TWP/MWR/C1/C2 - Sun in the field of view |
DataStreams: | twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1 |
Description: | Every day between around noon local time (usually between 1 and 2 AM UTC time) there is an increase in the brightness temperatures due to the sun in the field of view of the radiometer. The effect lasts less than an hour around local noon (usually between 1 and 2 AM UTC time). The effect appears as a smooth increase and decrease in brightness temperature. |
Measurements: | twpmwrtipC2.a1:
twpmwrtipC1.a1:
twpmwrlosC1.b1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2007 | 0700 | 06/13/2007 | 2000 |
06/16/2007 | 2100 | 06/17/2007 | 2100 |
Subject: | TWP/MWR/C1 - Intermittent data |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | After a computer change the MWR program did not restart properly. Data are intermittent between 6/12 and 6/17. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/21/2007 | 0000 | 12/11/2007 | 0355 |
Subject: | TWP/MWR/C1 - Incorrect ambient temperature readings |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | Starting on 11/21 the ambient temperature readings are intermittent and have spikes. Site operators replaced the dew-blower on 12/11 and readings came back to normal |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/2008 | 0000 | 06/04/2008 | 2200 |
Subject: | NSA/MWR/C1 - Spikes in air temperature readings |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | During this month there are occasional negative spikes in the Tkair variable. The problem may be corrosion in the temperature sensor or the infiltration of water from melting snow. The dewblower was replaced and a new sensor installed |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2008 | 1500 | 11/16/2009 | 1600 |
Subject: | NSA/MWR/C2 - Possible bias on measurements |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | This instrument was refurbished at the the vendor's facility in 2008 and then sent to the SGP for side-by-side comparison with another MWR. During the time the instrument was at the SGP, it was noticed that the 23.8-GHz measurements were slightly warmer than those from radiometer SN10 operating at the SGP Central Facility. A comparison with radiosonde measurements confirmed the slight change in the measurements. An explanation of the bias and comparison with radiosonde measurements and radiometer SN 10 is given in the mentor's monthly data review for the month of April 2008. Since there aren't radiosondes at NSA.C2, it is difficult to work around this problem. Based on comparison at the SGP, the bias in the 23.8-GHz channel was quantified to be ~1.5 K. Users can attempt to subtract this amount from the 23.8-GHz measurements. Alternatively, use the retrieved PWV and LWV keeping in mind that there is a possible overestimation of PWV of ~1 mm. On 11/16/2009 after a hardware failure of the radiometer a spare radiometer (SN15) was installed at the site. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2008 | 2200 | 06/20/2008 | 0200 |
Subject: | NSA/MWR/C1 - Missing surface air temperature data |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | Some wires in the dewblower were not correctly configured. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2008 | 0000 | 07/15/2008 | 0000 |
Subject: | NSA/MWR/C2 - Occasional thermal instability |
DataStreams: | nsa5mwravgC2.c1, nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | Between 7/1 and 7/15 the radiometer experienced a few days of thermal instability. From a review of the data it doesn't appear that the instability has had any major effect. It is not possible to quantify in detail the effect of the instability due to the lack of radiosonde sounding, however users are cautioned that a higher uncertainty may be affecting these data. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
nsa5mwravgC2.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2008 | 0000 | 09/30/2008 | 2359 |
Subject: | TWP/MWR/C1 - Short periods of wrong ambient temperature |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | During this month there are a few intermittent instances of bad ambient temperature readings. I will summarize here these short time ranges: 20080909 between 02:00 and 03:00 UTC 20080909 between 09:00 and 14:00 UTC Additionally the ambient temperature has short but frequent data gaps. The data gaps are very short (less than one hour). Users could interpolate missing data or use alternative sensors such as the surface meteorological data available for the site. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2008 | 0100 | 01/09/2009 | 0300 |
Subject: | TWP/MWR/C2 - Incorrect ambient temperature during rain |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | The ambient temperature was approximately 15 degree higher than what it should be when it was raining and the heater came. On Jan 9 2009 the dewblower was replaced which solved the problem. The increased ambient temperature (tkair) was happening during times of rain and users should always disregard MWR data during rain events. Therefore this DQR is colored transparent. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2008 | 0000 | 12/09/2008 | 1800 |
Subject: | NSA/MWR/C1 - Incorrect brightness temperatures and retrievals |
DataStreams: | nsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | The brightness temperatures and retrieved PWV and LWP show a sudden jump and have values that are too high. The suddenly jump back to normal at around 1800 UTC. All other parameters seem reasonable so the cause of the jump may just be due to accumulation of either snow or melting ice on the radome. |
Measurements: | nsa5mwravgC1.c1:
nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/2008 | 1900 | 02/06/2009 | 0530 |
Subject: | TWP/MWR/C1 - Ambient temperature data missing |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | The ambient temperature readings (tkair) suddenly failed. The sensor was replaced on Feb 6. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2009 | 2100 | 04/15/2009 | 2300 |
04/16/2009 | 1715 | 04/16/2009 | 2200 |
Subject: | NSA/MWR/C1 - RFI screening test |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | The instrument was covered with a shield to test the effect on the RF interference that is affecting the measurements since February. The test was performed on 4/15 and 4/16 for a few hours. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/2009 | 1600 | 03/14/2009 | 2200 |
Subject: | TWP/MWR/C2 - Intermittent data |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | There are several short data gaps (usually 2 to 7 hours) in the data due to computer malfunction. The problem was solved by replacing the computer. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/13/2009 | 0000 | 10/15/2009 | 1800 |
Subject: | NSA/MWR/C1 - High noise in 23.8-GHz channel |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | Starting approximately on February 13 the MWR experienced high level of noise in the 23.8 GHz channel. The spikes became more prominent around Feb 17 and increased after that date as well. The cause of the interference was identified as the nearby MWRP on Oct 13 and the instruments were realigned. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/23/2009 | 0000 | 05/26/2009 | 1900 |
Subject: | NSA/MWR/C1 - Intermittent air temperature readings |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | Starting on 5/23 the air temperature readings (tkair) were intermittent and had negative spikes |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/26/2009 | 1900 | 06/10/2009 | 2300 |
Subject: | NSA/MWR/C1 - Air temperature readings missing |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | The air temperature readings (tkair) dropped on 5/26. The signal was restored on 6/10. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2010 | 0000 | 01/14/2010 | 2300 |
Subject: | NSA/MWR/C2 - Radiometer unstable |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | The radiometer had problems maintaining the thermal stabilization between 1/6 and 1/14. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/2010 | 0000 | 02/20/2010 | 2359 |
Subject: | NSA/MWR/C1 - Elevated noise |
DataStreams: | nsamwrlosC1.b1, nsamwrtipC1.a1 |
Description: | The data have high noise levels. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/09/2010 | 0000 | 07/12/2010 | 2300 |
07/28/2010 | 0000 | 07/30/2010 | 2359 |
Subject: | NSA/MWR/C2 - Temperature instability |
DataStreams: | nsamwrlosC2.b1, nsamwrtipC2.a1 |
Description: | There was some temperature instability that could affect the calibration. Although the instability was brief users may find increased noise in the data or a slight deterioration of calibration accuracy during the indicated times. |
Measurements: | nsamwrlosC2.b1:
nsamwrtipC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/27/2011 | 1800 | 05/03/2011 | 1900 |
05/22/2011 | 1700 | 05/24/2011 | 0000 |
07/10/2004 | 2255 | 07/12/2004 | 1918 |
08/05/2005 | 1952 | 09/01/2005 | 1945 |
09/22/2005 | 0545 | 09/27/2005 | 2357 |
02/25/2006 | 0811 | 02/27/2006 | 1827 |
09/17/2009 | 2241 | 09/20/2009 | 1734 |
09/27/2010 | 0254 | 10/01/2010 | 1924 |
08/19/2002 | 1656 | 08/21/2002 | 1925 |
12/05/2002 | 2253 | 12/08/2002 | 2120 |
06/29/2003 | 1630 | 07/01/2003 | 2233 |
08/09/2003 | 0459 | 08/11/2003 | 1807 |
02/10/2004 | 0845 | 02/17/2004 | 0156 |
08/09/2001 | 0000 | 08/13/2001 | 0000 |
08/15/2001 | 0000 | 08/20/2001 | 0000 |
12/30/2001 | 2359 | 01/01/2002 | 0000 |
02/14/2002 | 2159 | 02/25/2002 | 2009 |
02/27/2002 | 0700 | 03/02/2002 | 0100 |
04/25/2002 | 1855 | 05/08/2002 | 2138 |
05/08/2002 | 2144 | 05/23/2002 | 1925 |
02/08/1998 | 1459 | 02/11/1998 | 2254 |
02/13/1998 | 1359 | 02/22/1998 | 2022 |
03/06/1998 | 1846 | 03/14/1998 | 0200 |
03/15/1998 | 2322 | 03/19/1998 | 0053 |
04/24/1998 | 1838 | 04/29/1998 | 2340 |
05/03/1998 | 1203 | 05/11/1998 | 2137 |
05/30/1998 | 1840 | 06/01/1998 | 1858 |
06/09/1998 | 2338 | 06/16/1998 | 2243 |
07/13/1998 | 0103 | 07/16/1998 | 1816 |
07/18/1998 | 1904 | 07/27/1998 | 2133 |
07/29/1998 | 0828 | 08/03/1998 | 1901 |
08/05/1998 | 0028 | 09/24/1998 | 2042 |
09/24/1998 | 2210 | 11/11/1998 | 1830 |
11/11/1998 | 1831 | 11/18/1998 | 1929 |
01/02/1999 | 0947 | 01/04/1999 | 1756 |
10/11/1999 | 2359 | 10/13/1999 | 2200 |
11/17/1999 | 0043 | 11/19/1999 | 0033 |
01/28/2000 | 1929 | 01/31/2000 | 1754 |
12/22/2000 | 2300 | 01/09/2001 | 2233 |
03/28/2001 | 2359 | 04/01/2001 | 0001 |
Subject: | NSA/MWR/C1 - Missing data |
DataStreams: | nsamwrtipC1.a1, nsamwrlosC1.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | nsamwrlosC1.b1:
nsamwrtipC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/2011 | 0311 | 01/09/2011 | 0500 |
Subject: | TWP/MWR/C1 - Intermittent data due to computer problems |
DataStreams: | twpmwrtipC1.a1, twpmwrlosC1.b1 |
Description: | Between 1/7 and 1/9 there are large segments of data missing because of a computer problem. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/2011 | 0000 | 06/14/2011 | 1400 |
Subject: | TWP/MWR/C2 - Missing ambient temperature |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | The tkair readings (ambient temperatures) is very intermittent and mostly missing for the month of May and June. On June 14 the dewblower was replaced. |
Measurements: | twpmwrtipC2.a1:
twpmwrlosC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/2011 | 0000 | 11/30/2011 | 2359 |
Subject: | TWP/MWR/C1 - Rain events not flagged |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | On some occasions the rain flag did not flag data during likely rain events. Users should carefully examine the data to ensure that they are not contaminated by rain. Also examine the brightness temperature qc variables. |
Measurements: | twpmwrtipC1.a1:
twpmwrlosC1.b1:
|