DQRs for Session: 117404 User:ben1forebaCompleted: 02-07-2009

Data Quality Reports for Session: 117404 User: ben1foreba Completed: 02/07/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D000608.18	TWP/C2/Sonde Missing Data	twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.a0, twpsondewnpnC2.a1
D021206.1	TWP/SONDE/C2 - Broken Temperature Sensor	twpsondewnpnC2.a1, twpsondewnpnC2.b1
D030419.1	TWP/SONDE/C2 - Bad RH Data (AIRS Validation Sonde)	twpsondewnpnC2.a1, twpsondewnpnC2.b1
D030608.4	TWP/SONDE/C2 - Failure of RH sensor	twpsondewnpnC2.a1, twpsondewnpnC2.b1

DQRID : D000608.18

Start Date	Start Time	End Date	End Time
12/22/1998	0000	03/03/1999	2359

Subject:	TWP/C2/Sonde Missing Data
DataStreams:	twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.a0, twpsondewnpnC2.a1
Description:	There were no sondes launced during this period because there was no helium on site and the hydrogen generator was not working. The hydrogen generator was repaired and launches resumed.
Measurements:	twpsondeC2.00: null(Raw data stream - documentation not supported) twpsondewnpnC2.a0: base time(base_time) lon(lon) Wind Direction(deg) Ascent Rate(asc) Mean Wind Speed(wspd) Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry) Surface dew point temperature(dp) Wind Status(wstat) Dummy altitude for Zeb(alt) lat(lat) Retrieved pressure profile(pres) Time offset of tweaks from base_time(time_offset) twpsondewnpnC2.00: null(Raw data stream - documentation not supported) twpsondewnpnC2.a1: Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) U-component(u_wind) lon(lon) lat(lat) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Ascent Rate(asc) Wind Direction(deg) Surface dew point temperature(dp) Dummy altitude for Zeb(alt) Wind Status(wstat) base time(base_time) Mean Wind Speed(wspd) V-component(v_wind)

Start Date	Start Time	End Date	End Time
09/18/2002	1137	09/18/2002	1301
09/24/2002	0129	09/24/2002	0204
09/24/2002	0220	09/24/2002	0352
11/23/2002	2330	11/24/2002	0108
11/25/2002	2337	11/26/2002	0001
12/16/2002	1138	12/16/2002	1248
12/22/2002	0136	12/22/2002	0204
12/24/2002	2331	12/25/2002	0112
12/27/2002	2344	12/28/2002	0131
03/28/2003	0214	03/28/2003	0339
04/22/2003	2341	04/23/2003	0122
04/23/2003	1129	04/23/2003	1308
04/24/2003	2358	04/25/2003	0126
06/02/2003	1134	06/02/2003	1321
06/06/2003	2335	06/07/2003	0057
06/09/2003	2340	06/10/2003	0116
06/11/2003	2345	06/12/2003	0112
06/14/2003	1133	06/14/2003	1300
06/26/2003	2335	06/27/2003	0114
09/27/2003	2327	09/28/2003	0132

Subject:	TWP/SONDE/C2 - Broken Temperature Sensor
DataStreams:	twpsondewnpnC2.a1, twpsondewnpnC2.b1
Description:	The temperature sensors on these radiosondes broke at launch. All the temperature-related data are incorrect.
Measurements:	twpsondewnpnC2.b1: Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry) Surface dew point temperature(dp) twpsondewnpnC2.a1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

Start Date	Start Time	End Date	End Time
04/13/2003	0124	04/13/2003	0200

Subject:	TWP/SONDE/C2 - Bad RH Data (AIRS Validation Sonde)
DataStreams:	twpsondewnpnC2.a1, twpsondewnpnC2.b1
Description:	The RH sensor heating circuit failed on this sonde. This results in oscillation of reported RH between reasonable values and values near zero. This was an AIRS validation sounding.
Measurements:	twpsondewnpnC2.b1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) twpsondewnpnC2.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

Start Date	Start Time	End Date	End Time
06/03/2003	2339	06/04/2003	0016

Subject:	TWP/SONDE/C2 - Failure of RH sensor
DataStreams:	twpsondewnpnC2.a1, twpsondewnpnC2.b1
Description:	It appears that the RH sensor heating circuit failed during this sounding. 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: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) twpsondewnpnC2.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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