DQRs for Session: 131686 User:ydingCompleted: 11-18-2010

Data Quality Reports for Session: 131686 User: yding Completed: 11/18/2010

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D070801.1	SGP/MWR/B1 - 23.8-GHz brightness temperature slightly high	sgpmwrlosB1.b1, sgpmwrtipB1.a1, sgp5mwravgB1.c1
D090202.4	SGP/MWR/B1 - Missing data	sgpmwrlosB1.b1
D090225.7	SGP/MWR/B1 - Noisy data	sgpmwrlosB1.b1, sgpmwrtipB1.a1
D090512.5	SGP/MWR/B1 - Increased noise level	sgpmwrlosB1.b1, sgpmwrtipB1.a1

DQRID : D070801.1

Start Date	Start Time	End Date	End Time
06/19/2007	1600	10/16/2009	0300

Subject:	SGP/MWR/B1 - 23.8-GHz brightness temperature slightly high
DataStreams:	sgpmwrlosB1.b1, sgpmwrtipB1.a1, sgp5mwravgB1.c1
Description:	The radiometer was refurbished and tested at the central facility in 2007. During testing the 23.8-GHz brightness temperature was found to be about 1.5 K higher than the measurements of the C1 radiometer. On 6/19/07 the radiometer was installed at BF1. A comparison with model calculation showed that the measured 23.8-GHz brightness temperature is slightly higher than the model. This offset will affect the PWV retrieval that is on an average about 1.3 mm higher than the radiosonde measurements. The rms error of the retrieved PWV is about 1 mm higher than specified in the netcdf file. On 10/16/2009 the radiometer was removed because of shut down of the boundary facility.
Measurements:	sgpmwrtipB1.a1: vaptip tbskytip23 sgp5mwravgB1.c1: Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23) Total water vapor along LOS path(vap) 23tbsky sgpmwrlosB1.b1: Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23) Total water vapor along LOS path(vap)

Start Date	Start Time	End Date	End Time
07/26/1999	1859	08/01/1999	1449
09/05/1999	0300	09/09/1999	1350
12/16/2000	0000	12/18/2000	2202
01/14/2001	1245	01/16/2001	1543
02/02/2001	1717	02/05/2001	1627
07/13/2001	2059	07/17/2001	1840
07/20/2001	1700	07/22/2001	1930
01/20/2003	0259	01/23/2003	1632
01/24/2003	1713	03/06/2003	2033
05/13/2003	0240	05/15/2003	1618
05/26/2003	0142	05/29/2003	1608
06/07/2003	0228	06/11/2003	1646
01/11/2004	0001	01/13/2004	1924
02/15/2004	0859	02/19/2004	1646
02/24/2004	1950	04/01/2004	1909
04/21/2004	2121	04/23/2004	1658
04/24/2004	2048	04/26/2004	1723
05/31/2005	2000	06/02/2005	1446
09/17/2005	1949	09/19/2005	1336
12/31/2005	0033	01/03/2006	1420
02/06/2006	0907	02/08/2006	1651
04/28/2006	1421	05/01/2006	1411
07/22/2006	0557	07/27/2006	1338
09/20/2006	1824	06/19/2007	1632
11/26/2007	1733	11/28/2007	2122
11/28/2007	2203	01/30/2008	1804
07/09/2008	0304	07/11/2008	1635
07/12/2008	0836	07/14/2008	1427
12/12/2008	1342	12/15/2008	1435
04/10/2009	0029	04/13/2009	1220
06/16/2009	0235	06/18/2009	1617

Subject:	SGP/MWR/B1 - Missing data
DataStreams:	sgpmwrlosB1.b1
Description:	Data are missing and unrecoverable.
Measurements:	sgpmwrlosB1.b1: Total liquid water along LOS path(liq) tkair sky23 tc23 bbn23 alt tc31 bb23 tnd31 Total water vapor along LOS path(vap) tnd_nom31 wet_window time_offset base_time tknd 31.4 GHz sky brightness temperature(tbsky31) lon Temperature, Sky Infra-Red(sky_ir_temp) bbn31 Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23) sky31 tkbb bb31 lat tnd_nom23 tkxc Temperature, brightness, longwave(ir_temp) tnd23

Start Date	Start Time	End Date	End Time
01/15/2009	1300	01/16/2009	0500

Subject:	SGP/MWR/B1 - Noisy data
DataStreams:	sgpmwrlosB1.b1, sgpmwrtipB1.a1
Description:	After a software crash data were very noisy.
Measurements:	sgpmwrtipB1.a1: vaptip tbskytip31 liqtip tipsky23 tbskytip23 tipsky31 sgpmwrlosB1.b1: Total liquid water along LOS path(liq) Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23) sky31 sky23 Total water vapor along LOS path(vap) 31.4 GHz sky brightness temperature(tbsky31)

Start Date	Start Time	End Date	End Time
04/05/2009	0000	09/01/2009	0000

Subject:	SGP/MWR/B1 - Increased noise level
DataStreams:	sgpmwrlosB1.b1, sgpmwrtipB1.a1
Description:	The radiometer was experiencing intermittent increase in the noise level of the two channels. Although it looks like the radiometer was still able to calibrate, the increased noise level may have resulted in a reduced number of tip curves collected. The increased noise was intermittent and lasted for a few hours at a time.
Measurements:	sgpmwrtipB1.a1: vaptip tbskytip31 liqtip tbskytip23 sgpmwrlosB1.b1: Total liquid water along LOS path(liq) Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23) Total water vapor along LOS path(vap) 31.4 GHz sky brightness temperature(tbsky31)

END OF DATA