DQR ID: D040127.2 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 01-27-2004 DQR SUBJECT: SGP/SONDE/C1 - Bad RH Data SUGGESTIONS: Near zero RH values are incorrect and the other RH values obtained during the first part of the sounding are suspect. Because the problem is related to the heating circuit, we cannot recover the RH data when both RH sensors are heated. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The RH values during the first half of this sounding oscillate between reasonable values and near-zero values. The oscillation is irregular and seems to be related to failure of the RH sensor heating process. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 dp rh START DATE/TIME: 01/16/2004 20:15 GMT END DATE/TIME:01/16/2004 21:51 GMT ---------------------------------------- LINK(S): none
DQR ID: D040219.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 02-19-2004 DQR SUBJECT: SGP/SONDE/C1 - Bad RH Data SUGGESTIONS: Near zero RH values are incorrect and the other RH values obtained during the first part of the sounding are suspect. Data at reduced vertical resolution may be recovered by using the maximum RH values in the interval 0 - 7.5 km. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The RH values during the first part of this sounding oscillate between reasonable values and near-zero values. The oscillation seems to be related to failure of the RH sensor heating process. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 dp rh START DATE/TIME: 02/09/2004 05:30 GMT END DATE/TIME:02/09/2004 06:01 GMT ---------------------------------------- LINK(S): none
DQR ID: D040219.2 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 02-19-2004 DQR SUBJECT: SGP/SONDE/C1 - Surface pressure incorrect SUGGESTIONS: Recalculate altitudes from corrected pressure at surface. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: I think the operator inadvdertently transposed to digits when entering the surface pressure value. The value entered is 987.0 hPa but the value shown in the raw data file at launch is 978.0. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 alt asc START DATE/TIME: 02/02/2004 05:30 GMT END DATE/TIME:02/02/2004 08:26 GMT ---------------------------------------- LINK(S): none
DQR ID: D040223.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 02-23-2004 DQR SUBJECT: SGP/SONDE/C1 - Broken temperature sensor SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 02/19/2004 17:46 GMT END DATE/TIME:02/19/2004 19:46 GMT ---------------------------------------- LINK(S): none
DQR ID: D040301.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 03-01-2004 DQR SUBJECT: SGP/SONDE/C1 - Broken temperature sensor SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The temperature sensor broke shortly after launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 02/27/2004 05:31 GMT END DATE/TIME:02/27/2004 07:21 GMT ---------------------------------------- LINK(S): none
DQR ID: D040415.2 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-15-2004 DQR SUBJECT: SGP/SONDE/C1 - Temperature sensor broke high into the sounding SUGGESTIONS: Use the data below 16570m - equivalently those collected from time offset 0 s. to time offset 3382 s. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The temperature sensor on this radiosonde appeared to break 56 minutes and 22 seconds into the sounding at an altitude of 16570 m. All the data below this point are good; only the data above this point to the end of the sounding (88 minutes and 14 seconds) are bad. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 04/13/2004 12:29 GMT END DATE/TIME:04/13/2004 13:01 GMT ---------------------------------------- LINK(S): none
DQR ID: D041005.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 10-05-2004 DQR SUBJECT: SGP/SONDE/C1 - Incorrect surface temperature SUGGESTIONS: Discard the first 5 temperature and relative humidity measurements, subtract the integrated water vapor from this level from the total, or interpolate between the correct surface value and the 6th level recorded by the radiosonde. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The operator entered a the surface temperature incorrectly on this sounding. The sonde data file shows the temperature as 33.5 degC but the operations log shows it as 3.5 degC. The first temperature recorded by the sonde after launch is 3.7 degC, consistent with the typical early morning inversion. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 10/02/2004 11:30 GMT END DATE/TIME:10/02/2004 11:31 GMT ---------------------------------------- LINK(S): none
DQR ID: D041013.4 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 10-13-2004 DQR SUBJECT: SGP/SONDE/C1 - Scheduled Soundings Missed SUGGESTIONS: QUALITY COLOR: Black - Missing PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The following scheduled sonde launches were missed due to computer system failures: 20040116.2330 20040117.0530 20040117.1130 20040117.1730 20040118.0530 20040121.0530 ---------------------------------------- DQR DATASTREAM(S): sgpsondeC1.00 Raw data stream - documentation not supported sgpsondewnpnC1.b1 alt asc base_time deg dp lat lon pres rh tdry time_offset u_wind v_wind wspd wstat START DATE/TIME: 01/16/2004 23:30 GMT END DATE/TIME:01/17/2004 18:30 GMT START DATE/TIME: 01/18/2004 05:30 GMT END DATE/TIME:01/18/2004 06:30 GMT START DATE/TIME: 01/21/2004 05:30 GMT END DATE/TIME:01/21/2004 06:30 GMT ---------------------------------------- LINK(S): PIF ID: P040126.1 - SGP/SONDE/C1 - DigiCORAIII is down