DQR ID | Subject | Data Streams Affected |
---|---|---|
D030517.2 | NSA/SONDE/C1 - Broken temperature sensor | nsasondewnpnC1.a1, nsasondewnpnC1.b1 |
D040822.1 | NSA/SONDE/C1 - This is a test sounding done using an RS80H radiosonde | nsasondewnpnC1.b1 |
D041027.1 | NSA/MWRP/C1 - Missing data | nsamwrpC1.b1 |
D041130.1 | NSA/SONDE/C1 - Test sounding using RS80H | nsasondewnpnC1.b1 |
D041213.5 | NSA/SONDE/C1 - Incorrect surface altitude | nsasondewnpnC1.b1, nsasondeC1.00 |
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 |
D050321.4 | NSA/SONDE/C1 - Bad temperature | nsasondewnpnC1.b1 |
D050902.1 | NSA/MWRP/C1 - Blower assembly failure | nsamwrpC1.b1 |
D060419.5 | NSA/MWRP/C1 - Incorrect calibration | nsamwrpC1.b1 |
D060427.2 | NSA/MWRP/C1 - Bad calibration values | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
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 |
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 |
D060929.2 | NSA/MWRP/C1 - Reprocessed: Re-calibration | nsamwrpC1.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 |
D061205.3 | NSA/MWRP/C1 - Reprocessed: K-Band calibration drift | nsamwrpC1.b1 |
D070124.1 | NSA/SONDE/C1 - Incorrect surface RH value | nsasondewnpnC1.b1 |
D070209.1 | NSA/MWRP/C1 - Incorrect surface measurements | nsamwrpC1.b1 |
D070302.1 | NSA/SONDE/C1 - Temperature sensor broke at launch | nsasondewnpnC1.b1 |
D070416.3 | NSA/MWRP/C1 - Incorrect surface measurements | nsamwrpC1.b1 |
D070709.1 | NSA/MWRP/C1 - Reprocessed: 6-channel retrieval replaced by 5-channel retrieval | nsamwrpC1.b1 |
D080115.1 | NSA/MWRP/C1 - Radiometer thermally unstable | nsamwrpC1.b1 |
D080211.4 | NSA/MWRP/C1 - Radiometer thermally unstable | nsamwrpC1.b1 |
D080319.1 | NSA/MWRP/C1 - Hardware failure- Intermittent data | nsamwrpC1.b1 |
D080319.3 | NSA/MWRP/C1 - Thermal instability- TKnd test | nsamwrpC1.b1 |
D080331.1 | NSA/MWRP/C1 - V-band Noise diode unstable | nsamwrpC1.b1 |
D080331.2 | NSA/MWRP/C1 - V-band Noise diode failure | nsamwrpC1.b1 |
D080409.2 | NSA/MWRP/C1 - Spare radiometer installed | nsamwrpC1.b1, nsamwrprawC1.00, nsamwrpC1.00 |
D080421.1 | NSA/MWRP/C1 - Radiometer in mixed scanning-zenith mode | nsamwrpC1.b1 |
D080523.3 | NSA/MWRP/C1 - Intermittent data | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
D080523.4 | NSA/MWRP/C1 - Reprocessed: LN2 calibration | nsamwrpC1.b1 |
D080523.5 | NSA/MWRP/C1 - Increased RF intereference | nsamwrpC1.b1 |
D080710.2 | NSA/MWRP/C1 - Reprocessed: LN2 calibrations applied | nsamwrpC1.b1 |
D080922.2 | NSA/MWRP/C1 - V-band noise diode failure | nsamwrpC1.b1 |
D081107.1 | NSA/MWRP/C1 - Incorrect V-band data | nsamwrpC1.b1 |
D090407.1 | NSA/MWRP/C1 - Reprocessed: Negative bias in LWP | nsamwrpC1.b1 |
D090629.2 | NSA/SONDE/C1 - Wind data missing | nsasondewnpnC1.b1 |
D090720.2 | NSA/SONDE/C1 - Wind data missing | nsasondewnpnC1.b1 |
D090826.1 | NSA/MWRP/C1 - Reprocessed: V-band channels too cold | nsamwrpC1.b1 |
D100330.1 | NSA/MWRP/C1 - Reprocessed: LN2 calibration | nsamwrpC1.b1 |
D100623.1 | NSA/MWRP/C1 - IRT readings bias | nsamwrpC1.b1 |
D101109.1 | NSA/MWRP/C1 - Reprocessed: Incorrect calibration | nsamwrpC1.b1 |
D110201.2 | NSA/MWRP/C1 - Calibration drift | nsamwrpC1.b1 |
D110511.1 | NSA/MWRP/C1 - Incorrect brightness temperatures | nsamwrpC1.b1 |
D120130.1 | NSA/MWRP/C1 - Reprocess: Incorrect calibration coefficients | nsamwrpC1.b1 |
D120221.1 | NSA/MWRP/C1 - Rapid calibration drift | nsamwrpC1.b1 |
D120328.1 | NSA/MWRP/C1 - Calibration temperature dependence | nsamwrpC1.b1 |
D120521.1 | NSA/MWRP/C1 - Reprocessed: Incorrect calibration | nsamwrpC1.b1 |
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 |
---|---|---|---|
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 |
---|---|---|---|
09/04/2005 | 0531 | 09/06/2005 | 1857 |
09/10/2005 | 0052 | 09/12/2005 | 1830 |
09/21/2005 | 1805 | 10/12/2005 | 2311 |
06/23/2006 | 1800 | 08/08/2006 | 2250 |
08/11/2006 | 2359 | 08/14/2006 | 1454 |
10/09/2006 | 2101 | 10/11/2006 | 1733 |
01/05/2007 | 2358 | 01/08/2007 | 2019 |
02/28/2007 | 2309 | 03/05/2007 | 0027 |
07/13/2007 | 1838 | 12/08/2007 | 0125 |
01/04/2008 | 2357 | 01/06/2008 | 1903 |
02/16/2008 | 1818 | 02/21/2008 | 0006 |
02/23/2008 | 1005 | 02/26/2008 | 2320 |
03/12/2008 | 0143 | 04/09/2008 | 1540 |
04/10/2008 | 1840 | 04/14/2008 | 1657 |
04/18/2008 | 2258 | 04/21/2008 | 1422 |
04/27/2008 | 1846 | 04/29/2008 | 0525 |
05/01/2008 | 0328 | 05/28/2008 | 2241 |
10/14/2008 | 1659 | 02/13/2009 | 2234 |
02/01/2011 | 1800 | 04/04/2011 | 1300 |
04/09/2011 | 0000 | 04/11/2011 | 1400 |
04/28/2011 | 0000 | 10/19/2011 | 0000 |
04/10/2005 | 0000 | 04/11/2005 | 1622 |
11/20/2004 | 0039 | 11/22/2004 | 1851 |
10/07/2004 | 0859 | 10/27/2004 | 1237 |
02/21/2004 | 0925 | 02/23/2004 | 2238 |
Subject: | NSA/MWRP/C1 - Missing data |
DataStreams: | nsamwrpC1.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | nsamwrpC1.b1:
|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
08/29/2005 | 1900 | 09/21/2005 | 1804 |
Subject: | NSA/MWRP/C1 - Blower assembly failure |
DataStreams: | nsamwrpC1.b1 |
Description: | The MWRP had a problem with the ambient temperature sensor situated in the blower assembly. This caused corrupted data files and software crashes. The blower assembly was removed and sent to the vendor for repair on 9/21, and re-installed on 10/12. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/12/2006 | 1800 | 04/13/2006 | 2000 |
Subject: | NSA/MWRP/C1 - Incorrect calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | On 4/12 a calibration was attempted but the calibration was not successful. A new calibration was completed on 4/13 20:00 UTC. Data between the two calibration attempts are incorrect and should be disregarded. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/2006 | 1930 | 04/27/2006 | 1530 |
Subject: | NSA/MWRP/C1 - Bad calibration values |
DataStreams: | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
Description: | After calibration was completed on 4/26/2006 the last value in the V-band calibration file was corrupted. V-band data are wrong between 4/26 19:30 and 4/27 15:27 when the corrupted values were removed. |
Measurements: | nsamwrprawC1.00:
nsamwrpC1.b1:
nsamwrpC1.00:
|
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 |
---|---|---|---|
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 |
---|---|---|---|
08/08/2006 | 2200 | 09/06/2006 | 2150 |
Subject: | NSA/MWRP/C1 - Reprocessed: Re-calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | After being re-installed the radiometer was calibrated with liquid nitrogen. Data between 8/8 and 9/6 have been reprocessed to apply the revised calibrations. |
Measurements: | nsamwrpC1.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 |
---|---|---|---|
11/01/2006 | 0000 | 11/27/2006 | 2100 |
Subject: | NSA/MWRP/C1 - Reprocessed: K-Band calibration drift |
DataStreams: | nsamwrpC1.b1 |
Description: | At the beginning of November, the K-band channel calibration started to drift. The MWRP brightness temperatures were about 1.5 K higher than the MWR-measured brightness temperatures. By the half of the month the differences were more than 2 K to become about 4 K by the end of November. On Nov 27 new calibration coefficients were derived and uploaded. Data for 20061101-20061127 have been reprocessed with the revised calibrations and are available from the ARM Archive effective January 2007. |
Measurements: | nsamwrpC1.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 |
---|---|---|---|
02/08/2007 | 0400 | 02/13/2007 | 1700 |
Subject: | NSA/MWRP/C1 - Incorrect surface measurements |
DataStreams: | nsamwrpC1.b1 |
Description: | Surface measurements are spiking and not comparing well with the co-located METTWR measurements. On 2/13 site operators cleaned a filter in the heater housing resolving the problem. |
Measurements: | nsamwrpC1.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 |
---|---|---|---|
02/28/2007 | 0000 | 03/29/2007 | 2300 |
Subject: | NSA/MWRP/C1 - Incorrect surface measurements |
DataStreams: | nsamwrpC1.b1 |
Description: | The MWRP surface temperature and pressure readings were in disagreement with those from other instruments. The possible cause of the disagreement was ice buildup around the sensors. Readings returned to normal March 29. The temperature readings were more affected. Since the readings are erratic, with large oscillations, it is not possible to correct them. Disregard the surface temperature and humidity readings during this time. The wrong readings will affect the first layer of the temperature and humidity profiles as well. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2004 | 0214 | 06/02/2007 | 2359 |
Subject: | NSA/MWRP/C1 - Reprocessed: 6-channel retrieval replaced by 5-channel retrieval |
DataStreams: | nsamwrpC1.b1 |
Description: | Due to repeated failure of the V-band receiver and calibration problems, the 6-channel retrieval was retired and a new 5-channel retrieval which uses only the K-band channels was implemented. All data previously processed with the 6-channel retrieval have been reprocessed. Please note that the 7 channels (brightness temperatures) in the V-band range (51 to 60 GHz) should not be used. See D080331.1 and D080331.2. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/2007 | 0000 | 12/23/2007 | 0000 |
Subject: | NSA/MWRP/C1 - Radiometer thermally unstable |
DataStreams: | nsamwrpC1.b1 |
Description: | Between Dec 21 and Dec 23 the external temperature dropped to - 38 C. This caused a problem with the stability of the noise diode mount temperature and consequent problem with calibration. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2008 | 0000 | 01/31/2008 | 2300 |
Subject: | NSA/MWRP/C1 - Radiometer thermally unstable |
DataStreams: | nsamwrpC1.b1 |
Description: | During January the radiometer was thermally unstable during several days of cold weather. The worst days of thermal instability were between Jan 12 and Jan 17. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/29/2008 | 0000 | 03/12/2008 | 0000 |
Subject: | NSA/MWRP/C1 - Hardware failure- Intermittent data |
DataStreams: | nsamwrpC1.b1 |
Description: | Data are intermittent during this time due to a failure of the analog board. The calibration of V-band data may have slightly drifted due to power outages. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2008 | 0000 | 03/12/2008 | 0000 |
Subject: | NSA/MWRP/C1 - Thermal instability- TKnd test |
DataStreams: | nsamwrpC1.b1 |
Description: | During this time the radiometer was thermally unstable . The noise diode physical temperature had sudden drops of more than 5 degree in several ccasions between 2/1 and 2/11. On 2/12 the radiometer temperature set point was lowered of about 10 degree as a test. On 2/27 a new analog board was installed in the instrument. Data after 2/27 show a slight change in calibration. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2007 | 0000 | 03/15/2007 | 2300 |
Subject: | NSA/MWRP/C1 - V-band Noise diode unstable |
DataStreams: | nsamwrpC1.b1 |
Description: | Sometimes between Jan and March 2007 the V-band noise diode started to be unstable. V-band channels during this period show large discrepancies with model computations. The problem was evident during the month of January. During February and March the problem was less visible, however measurement model comparisons show an increased bias. The instrument was calibrated with LN2 on March 15 and the calibration results showed a large drift in the calibration parameters. The hardware failure will have consequences in the retrievals of temperature and relative humidity profiles. It is difficult to establish when the failure started. Disregard the V-band channels during this period. Vertical profiles of temperature and humidity are affected as well. Please note that this DQR only covers the 7 channels (brightness temperatures) in the V-band range (51 to 60 GHz). The 5 K-band channels (20-31 GHz) are not affected. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/2007 | 1900 | 07/13/2007 | 1900 |
Subject: | NSA/MWRP/C1 - V-band Noise diode failure |
DataStreams: | nsamwrpC1.b1 |
Description: | The LN2 calibration on 3/15 showed a large drift of the V-band calibration parameters. The radiometer was calibrated again in June and was sent out for repairs in July 2007. Between 3/15 and 7/13 2007 the V-band data are incorrect and should be disregarded. The failure affects the retrieved vertical profiles of temperature and humidity as well. Please note that the hardware failure affected the 7 V-band channels only (51-60 GHz). Channels in the frequency range between 20 and 30 GHz are not affected. Integrated liquid water (LWP) and water vapor (PWV) are not affected since they use K-band channels only. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/2008 | 1539 | 05/01/2008 | 0300 |
Subject: | NSA/MWRP/C1 - Spare radiometer installed |
DataStreams: | nsamwrpC1.b1, nsamwrprawC1.00, nsamwrpC1.00 |
Description: | A spare radiometer was provided by Radiometrics while they try to fix our MWRP. The spare radiometer is of the same family as the one we have in Barrow and it will stay at the site until our radiometer is repaired. A LN2 calibration will be performed next week. |
Measurements: | nsamwrprawC1.00:
nsamwrpC1.b1:
nsamwrpC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/08/2008 | 0000 | 04/21/2008 | 1420 |
Subject: | NSA/MWRP/C1 - Radiometer in mixed scanning-zenith mode |
DataStreams: | nsamwrpC1.b1 |
Description: | After installing the spare radiometer (D080409.2), the data started to be intermittent and the software froze several times. To test if the problem was due to the scanning procedure used with the other radiometer, the instrument was run with a zenith-only procedure at times and with the usual scanning procedure at restart. When restarted with the scanning procedure the software had problems, so it was decided to run the spare instrument only with the zenith-viewing mode until our instrument comes back. The quality of the data should be unaffected. The only difference is that only data collected at 90 degree angle will be available until our instrument comes back. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/2008 | 1539 | 05/01/2008 | 0300 |
Subject: | NSA/MWRP/C1 - Intermittent data |
DataStreams: | nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00 |
Description: | A spare radiometer was installed a the site to substitute the malfunctioning radiometer (see DQRs D080409.2 and D080421.1). During this time the spare radiometer had problems starting and was stopping collection suddenly. Data during this time are very intermittent with large gaps. |
Measurements: | nsamwrprawC1.00:
nsamwrpC1.b1:
nsamwrpC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/2008 | 1539 | 05/01/2008 | 0300 |
Subject: | NSA/MWRP/C1 - Reprocessed: LN2 calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | On 4/9 a spare radiometer was installed at the site. On 4/18 a LN2 calibration was conducted. Upon examination of the data it appeared that the LN2 calibration was generally successful, however the 30-GHz channel was not calibrated properly. New calibration coefficients for all K-band channels were derived and data for the whole month should be reprocessed with these newly derived coefficients. I will provide the new configuration file. An explanation of the effects of the poor calibration is given in the Instrument Mentor Monthly Summary report. The poor calibration affected the LWP in particular. Re-calibration will correct the problem. Data reprocessed 20080610. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/2008 | 1539 | 05/01/2008 | 0300 |
Subject: | NSA/MWRP/C1 - Increased RF intereference |
DataStreams: | nsamwrpC1.b1 |
Description: | The spare radiometer experienced increased levels of RF interference. The interference is prominent on the 30-GHz channel and LWP retrievals that appear particularly noisy. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2008 | 0000 | 07/18/2008 | 1950 |
Subject: | NSA/MWRP/C1 - Reprocessed: LN2 calibrations applied |
DataStreams: | nsamwrpC1.b1 |
Description: | The V-band measurements were incorrect. The quantities affected were the temperature and humidity profiles. The instrument was re-calibrated on July 18. The new calibrations have been applied to the data for this time period. The reprocessed data were archived in January 2009. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/05/2008 | 0000 | 10/14/2008 | 1700 |
Subject: | NSA/MWRP/C1 - V-band noise diode failure |
DataStreams: | nsamwrpC1.b1 |
Description: | The V-band noise diode is showing signs of instability. Starting about August 5 the comparison of brightness temperatures with model showed an increased divergence resulting from a downward trend in the brightness temperatures of frequencies > 50 GHz. Disregard brightness temperatures and retrieved products associated with the V-band channels. These include all profiles. Integrated water vapor and liquid water path are not affected. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/28/2008 | 2200 | 06/30/2008 | 2359 |
Subject: | NSA/MWRP/C1 - Incorrect V-band data |
DataStreams: | nsamwrpC1.b1 |
Description: | The V-band channels show a drift during this time. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/13/2009 | 0000 | 04/15/2009 | 1950 |
Subject: | NSA/MWRP/C1 - Reprocessed: Negative bias in LWP |
DataStreams: | nsamwrpC1.b1 |
Description: | After the radiometer was installed at the site following extensive refurbishing the retrieved LWP had a large negative bias (~-0.07 mm). The calibration coefficients were modified and that resolved the problem. Data for February, March and part of April were reprocessed with the revised calibrations and archived in July. |
Measurements: | nsamwrpC1.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 |
---|---|---|---|
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 |
---|---|---|---|
07/20/2009 | 1817 | 08/26/2009 | 1950 |
Subject: | NSA/MWRP/C1 - Reprocessed: V-band channels too cold |
DataStreams: | nsamwrpC1.b1 |
Description: | The calibrations of 7/20 and 7/29 were slightly affected by high humidity at the site. As a result the V-band channels were calibrated too cold. On 8/26 the mentor modified the configuration file and reinstated the calibration coefficients derived on 3/20/2009. Data were reprocessed 20100118. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2010 | 0000 | 03/05/2010 | 2200 |
Subject: | NSA/MWRP/C1 - Reprocessed: LN2 calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | The instrument was calibrated on 3/5/2010. These latest calibration coefficients have been applied to February data as well to mitigate the high bias in LWP observed in February. Reprocessed data were archived April 2010. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/07/2010 | 0700 | 06/16/2010 | 1845 |
Subject: | NSA/MWRP/C1 - IRT readings bias |
DataStreams: | nsamwrpC1.b1 |
Description: | The MWRP IRT appeared to not be reaching its lower limit (-50 C / 223.15 K). The readings stayed around 230 K although the sky was clear. On 6/16 the site technicians noticed that the gold mirror was scratched and appeared to have a deposit on it. The mirror was replaced and on 6/17 the lens was cleaned. These actions solved the problem. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/2010 | 0000 | 11/15/2010 | 2113 |
Subject: | NSA/MWRP/C1 - Reprocessed: Incorrect calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | The calibration of the MWRP drifted starting on September 21. The drift caused a negative LWP. On 10/21 I modified the calibration of the 30 GHz channel in an attempt to correct for the negative bias in LWP. The change in the calibration however caused an excessive increase in the PWV retrievals. The original calibration values were reinstated on 10/29. I then recomputed the temperature coefficients as well as the noise diode injection temperature from tip curves and uploaded the new values on Nov 15 2010. Reprocess the data from 9/21 to 11/15 with the newly computed coefficients. Reprocessing completed 20110111. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/2010 | 0000 | 02/01/2011 | 1800 |
Subject: | NSA/MWRP/C1 - Calibration drift |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer showed increased drift in the K-band calibration. Several attempts to correct for the drift did not return the expected result. Instrument was removed from service 20110201 and returned to vendor for repair. Data are erratic; data use during the indicated time is not recommended. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/04/2011 | 1300 | 04/27/2011 | 1100 |
Subject: | NSA/MWRP/C1 - Incorrect brightness temperatures |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer was reinstalled on 4/3/2011 but the 30 GHz data immediately appeared extremely noisy. The problem appears related to noise diode instability. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/19/2011 | 0000 | 01/14/2012 | 0600 |
Subject: | NSA/MWRP/C1 - Reprocess: Incorrect calibration coefficients |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer data need to be reprocessed with new calibrations. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/2012 | 0600 | 02/03/2012 | 2300 |
Subject: | NSA/MWRP/C1 - Rapid calibration drift |
DataStreams: | nsamwrpC1.b1 |
Description: | The radiometer calibration was rapidly drifting. Brightness temperatures as well as retrievals are incorrect. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/26/2012 | 0000 | 03/23/2012 | 2359 |
Subject: | NSA/MWRP/C1 - Calibration temperature dependence |
DataStreams: | nsamwrpC1.b1 |
Description: | The calibration was showing a noticeable temperature dependence that was not corrected by the calibration coefficients. Between 2/26 and 3/23 the quality of the data and of the retrievals is degraded. |
Measurements: | nsamwrpC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2012 | 1822 | 04/25/2012 | 1608 |
Subject: | NSA/MWRP/C1 - Reprocessed: Incorrect calibration |
DataStreams: | nsamwrpC1.b1 |
Description: | The LN2 calibration was only partially successful, some the K-band channels did not calibrate properly. On 4/25 new coefficients were derived from tip curves and were uploaded. The data for 4/13-4/25 were reprocessed to apply the 4/25 calibrations. Reprocessed data were archived in July 2012. |
Measurements: | nsamwrpC1.b1:
|