DQR ID: D030114.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 01-14-2003 DQR SUBJECT: SGP/SONDE/C1 - Bad RH Data SUGGESTIONS: Near zero RH values are incorrect and the other RH values obtained during the first 15 minutes 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 15 minutes 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. I have informed Vaisala of the problem and provided raw data files to them for analysis. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh sgpsondewnpnC1.b1 dp rh START DATE/TIME: 01/11/2003 05:36 GMT END DATE/TIME:01/11/2003 05:51 GMT ---------------------------------------- LINK(S): none
DQR ID: D030122.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 01-22-2003 DQR SUBJECT: SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The radiosonde temperature sensor apparently broke during launch. This results in bad temperature, dew point, and rh data. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 01/19/2003 11:34 GMT END DATE/TIME:01/19/2003 12:59 GMT ---------------------------------------- LINK(S): none
DQR ID: D030206.5 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 02-06-2003 DQR SUBJECT: SGP/SONDE/C1 - Bad temperature/RH SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The temperature sensor broke shortly after launch. All temperature and RH-related data are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 02/02/2003 17:32 GMT END DATE/TIME:02/02/2003 18:32 GMT ---------------------------------------- LINK(S): none
DQR ID: D030330.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 03-30-2003 DQR SUBJECT: SGP/Sonde/C1 - Bad temperature, RH SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: These three soundings all show the effects of a temperature sensor broken at launch. The temperature, RH, dew-point values all are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 03/18/2003 11:32 GMT END DATE/TIME:03/18/2003 13:22 GMT START DATE/TIME: 03/20/2003 11:31 GMT END DATE/TIME:03/20/2003 11:40 GMT START DATE/TIME: 03/20/2003 17:31 GMT END DATE/TIME:03/20/2003 19:04 GMT ---------------------------------------- LINK(S): none
DQR ID: D030409.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-09-2003 DQR SUBJECT: SGP/Sonde/C1 - Bad RH in sounding SUGGESTIONS: Either ignore this part of the sounding or edit the data to use only the maximum RH values reported in every 10 minute period during that portion of the sounding. The probably correct values might be recovered from the raw data files, but this would be a lot of work. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The RH sensor heating circuit was out of synch from about 400 sec after launch until the circuit was turned off whent he sounding temperature reached approximately 233 degK (-40 degC) about 1500 sec after launch. During this time period the reported RH oscillates between reasonable values and near-zero values. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh sgpsondewnpnC1.b1 dp rh START DATE/TIME: 04/06/2003 11:44 GMT END DATE/TIME:04/06/2003 12:03 GMT ---------------------------------------- LINK(S): none
DQR ID: D030411.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-11-2003 DQR SUBJECT: SGP/Sonde/C1 - Sondes launched an hour early SUGGESTIONS: Not a real problem, just a curiousity. QUALITY COLOR: Transparent - Does not affect quality PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: It looks like someone forgot to set his/her clock ahead. The sounding that should have been done at 23:30 UTC on 4/6 was done at 22:38 and the following sounding, which should have been done at 0530 on 4/7 was done at 04:31. The subsequent soundings all are done at the correct times. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.00 Raw data stream - documentation not supported sgpsondewnpnC1.a1 alt asc base_time deg dp lat lon pres rh tdry time_offset u_wind v_wind wspd wstat sgpsondewnpnC1.b1 alt asc base_time deg dp lat lon pres rh tdry time_offset u_wind v_wind wspd wstat START DATE/TIME: 04/06/2003 22:00 GMT END DATE/TIME:04/07/2003 07:00 GMT ---------------------------------------- LINK(S): none
DQR ID: D030411.2 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-11-2003 DQR SUBJECT: SGP/Sonde/C1 - Incorrect surface temperature on CF sounding SUGGESTIONS: Ignore or replace first point with reasonable value QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: It appears that the operator entered an incorrect value for surface temperature. Rather than 43.2 degC in the file, the value is most likely 19. degC (thwaps reading 19.4, first sonde reading aloft 18.6). ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 tdry sgpsondewnpnC1.b1 tdry START DATE/TIME: 04/06/2003 22:38 GMT END DATE/TIME:04/06/2003 22:38 GMT ---------------------------------------- LINK(S): none
DQR ID: D030411.3 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-11-2003 DQR SUBJECT: SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems SUGGESTIONS: Data are missing and unrecoverable. QUALITY COLOR: Black - Missing PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: These sonde launches where unsuccessful due to problems with the antenna configuration resulting in signal loss before the launch. ---------------------------------------- DQR DATASTREAM(S): sgplssondeC1.c1 alt base_time lat lon pres rh tdry time_offset sgpsondeC1.00 Raw data stream - documentation not supported sgpsondewnpnC1.a1 alt asc base_time deg dp lat lon pres rh tdry time_offset u_wind v_wind wspd wstat sgpsondewnpnC1.b1 alt asc base_time deg dp lat lon pres rh tdry time_offset u_wind v_wind wspd wstat START DATE/TIME: 04/01/2003 17:30 GMT END DATE/TIME:04/01/2003 19:30 GMT START DATE/TIME: 04/02/2003 05:30 GMT END DATE/TIME:04/02/2003 07:30 GMT START DATE/TIME: 04/02/2003 11:30 GMT END DATE/TIME:04/02/2003 13:30 GMT ---------------------------------------- LINK(S): PIF ID: P030403.1 - SGP/SONDE/C1 - Missing launches
DQR ID: D030419.2 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-19-2003 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 as a result all variables that are affected by temperature are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 04/15/2003 23:32 GMT END DATE/TIME:04/16/2003 01:24 GMT ---------------------------------------- LINK(S): none
DQR ID: D030427.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 04-27-2003 DQR SUBJECT: SGP/SONDE/C1 - Broken temperature sensor SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The temperature sensor on this radiosonde broke after launch. All temperature-related variables (dp, tdry, rh) are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 04/18/2003 11:30 GMT END DATE/TIME:04/18/2003 13:10 GMT ---------------------------------------- LINK(S): none
DQR ID: D030507.3 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 05-07-2003 DQR SUBJECT: SGP/SONDE/C1 - Broken temperature sensors SUGGESTIONS: No fix. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The temperature sensors broke at launch on both of these soundings. All of the temperature-related data (tdry, rh, dp) are incorrect. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 05/04/2003 11:30 GMT END DATE/TIME:05/04/2003 11:45 GMT START DATE/TIME: 05/04/2003 23:30 GMT END DATE/TIME:05/05/2003 01:16 GMT ---------------------------------------- LINK(S): none
DQR ID: D030614.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 06-14-2003 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.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 06/09/2003 17:30 GMT END DATE/TIME:06/09/2003 17:37 GMT ---------------------------------------- LINK(S): none
DQR ID: D030707.7 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 07-07-2003 DQR SUBJECT: SGP/SONDE/C1 - Incorrect surface RH value. SUGGESTIONS: Change 0% to 52% at the 0 min 0 sec sample. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: The surface RH value, reported as 0%RH should be 52%. This resulted from a typographical error by the operator when entering the surface data. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp rh sgpsondewnpnC1.b1 dp rh START DATE/TIME: 06/22/2003 23:31 GMT END DATE/TIME:06/22/2003 23:31 GMT ---------------------------------------- LINK(S): none
DQR ID: D030722.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 07-22-2003 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.a1 dp rh tdry sgpsondewnpnC1.b1 dp rh tdry START DATE/TIME: 07/19/2003 17:30 GMT END DATE/TIME:07/19/2003 19:30 GMT ---------------------------------------- LINK(S): none
DQR ID: D030807.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 08-07-2003 DQR SUBJECT: SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding SUGGESTIONS: Only the first bad temperature reading will trigger a standard mentor QC flag. I suggest interpolating the temperature values from 2 sec though 14 sec using the surface value and the value at 16 sec as endpoints. QUALITY COLOR: Red - Incorrect PRB REVIEWED: Y ---------------------------------------- DQR DESCRIPTION: I've never seen this before. The temperature reported by the radiosonde dropped over 30 degC just after launch (usually a symptom of a broken temperature sensor), but then recovered after 14 seconds of bad readings. The temperatures from 2 seconds through 14 seconds after launch are incorrect, the remainder of the sounding looks fine. I have sent the data files to Vaisala for their consideration. ---------------------------------------- DQR DATASTREAM(S): sgpsondewnpnC1.a1 dp tdry sgpsondewnpnC1.b1 dp tdry START DATE/TIME: 08/02/2003 17:25 GMT END DATE/TIME:08/02/2003 17:26 GMT ---------------------------------------- LINK(S): none
DQR ID: D031112.1 DQR SUBMITTER: Barry Lesht DATE SUBMITTED: 11-12-2003 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: 11/01/2003 11:33 GMT END DATE/TIME:11/01/2003 13:15 GMT ---------------------------------------- LINK(S): none