DQR ID | Subject | Data Streams Affected |
---|---|---|
D031008.1 | TWP/SONDE/C2 - Strange problem with data - | twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.b1 |
D031231.1 | TWP/SONDE/C2 - RH sensor bad | twpsondewnpnC2.b1 |
D040127.3 | TWP/SONDE/C2 - Broken temperature sensors | twpsondewnpnC2.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/02/2003 | 0232 | 10/02/2003 | 0300 |
Subject: | TWP/SONDE/C2 - Strange problem with data - |
DataStreams: | twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.b1 |
Description: | This is very strange. The data has what appears to be a pressure jump at launch (from 1007.2 to 956.5 hPa) but the sounding temperature and RH data clearly look to be interpolated between the surface and tropopause. By examining the absolutely raw data, I found that the system assigned an elapsed time of 408 seconds (since system start up) to the launch point, but there is no raw data between 410 and 532 seconds. The raw pressure value at 410 seconds is 1007.6 hPa and that at 532 seconds is 40.9 hPa! Unless this sounding was done by using a rocket-powered balloon (maybe even then), it would be impossible for the sonde to get to 40.9 hPa in 2 minutes. Because the apparent gap is only two minutes, the system was able to interpolate but is not sophisticated enough to understand that the limits of the interpolation are unreasonable. I can't imagine what went wrong - I've not seen anything like this before. |
Measurements: | twpsondeC2.00:
twpsondewnpnC2.b1:
twpsondewnpnC2.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/22/2003 | 0025 | 10/22/2003 | 0155 |
10/22/2003 | 2340 | 10/23/2003 | 0121 |
Subject: | TWP/SONDE/C2 - RH sensor bad |
DataStreams: | twpsondewnpnC2.b1 |
Description: | It appears that the RH sensor heating circuits failed during these soundings. The RH oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems to stop when the temperature is below ~35 degC. According to Vaisala these are symptoms of failure in the ASIC (application specific integrated circuit) that controls the heating. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0040 | 10/13/2003 | 0203 |
11/08/2003 | 2335 | 11/09/2003 | 0215 |
11/18/2003 | 1205 | 11/18/2003 | 1340 |
11/19/2003 | 1156 | 11/19/2003 | 1346 |
11/21/2003 | 0044 | 11/21/2003 | 0113 |
12/20/2003 | 1225 | 12/20/2003 | 1408 |
12/21/2003 | 0056 | 12/21/2003 | 0126 |
12/21/2003 | 1155 | 12/21/2003 | 1344 |
12/23/2003 | 0042 | 12/23/2003 | 0212 |
12/23/2003 | 1137 | 12/23/2003 | 1259 |
12/23/2003 | 2342 | 12/24/2003 | 0132 |
01/08/2004 | 1135 | 01/08/2004 | 1309 |
01/09/2004 | 1157 | 01/09/2004 | 1342 |
01/09/2004 | 1359 | 01/09/2004 | 1537 |
01/12/2004 | 2342 | 01/13/2004 | 0214 |
01/16/2004 | 1409 | 01/16/2004 | 1548 |
01/16/2004 | 2337 | 01/17/2004 | 0109 |
01/18/2004 | 1135 | 01/18/2004 | 1256 |
01/19/2004 | 0223 | 01/19/2004 | 0346 |
01/19/2004 | 2329 | 01/20/2004 | 0157 |
01/21/2004 | 1252 | 01/21/2004 | 1400 |
01/22/2004 | 0052 | 01/22/2004 | 0227 |
01/23/2004 | 1137 | 01/23/2004 | 1319 |
01/26/2004 | 1202 | 01/26/2004 | 0146 |
02/17/2004 | 1406 | 02/17/2004 | 1536 |
02/26/2004 | 1221 | 02/26/2004 | 1350 |
03/09/2004 | 1145 | 03/09/2004 | 1315 |
03/14/2004 | 1131 | 03/14/2004 | 1300 |
03/22/2004 | 1134 | 03/22/2004 | 1300 |
03/29/2004 | 2332 | 03/30/2004 | 0047 |
03/30/2004 | 2334 | 03/31/2004 | 0059 |
04/11/2004 | 2348 | 04/12/2004 | 0120 |
05/01/2004 | 2335 | 05/02/2004 | 0110 |
05/02/2004 | 2336 | 05/03/2004 | 0109 |
05/13/2004 | 2334 | 05/14/2004 | 0112 |
05/14/2004 | 1406 | 05/14/2004 | 1411 |
06/07/2004 | 0224 | 06/07/2004 | 0351 |
06/25/2004 | 1146 | 06/25/2004 | 1328 |
07/02/2004 | 0059 | 07/02/2004 | 0217 |
07/20/2004 | 0220 | 07/20/2004 | 0358 |
07/24/2004 | 1235 | 07/24/2004 | 1355 |
08/22/2004 | 1144 | 08/22/2004 | 1207 |
09/08/2004 | 1425 | 09/08/2004 | 1605 |
09/08/2004 | 2338 | 09/08/2004 | 2345 |
10/18/2004 | 2346 | 10/19/2004 | 0128 |
11/29/2004 | 2321 | 11/30/2004 | 0105 |
12/08/2004 | 1143 | 12/08/2004 | 1306 |
12/30/2004 | 1130 | 12/30/2004 | 1239 |
Subject: | TWP/SONDE/C2 - Broken temperature sensors |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The temperature sensors on these radiosondes broke after launch. All temperature-related data are incorrect. |
Measurements: | twpsondewnpnC2.b1:
|