Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/02/2003 | 0232 | 10/02/2003 | 0300 | Incorrect |
Subject: | TWP/SONDE/C2 - Strange problem with data - |
DataStreams: | twpsondewnpnC2.b1, twpsondewnpnC2.00, twpsondeC2.00 |
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. |
Suggestions: | I'd call this one completely bad. It was an AIRS IOP sounding. |
Measurements: | twpsondewnpnC2.b1: more
twpsondeC2.00: more twpsondewnpnC2.00: more |