DQRs for Session: 111712 User:troyanCompleted: 04-28-2008

Data Quality Reports for Session: 111712 User: troyan Completed: 04/28/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D000606.1	SGP/MWR/C1 - IRT removed	sgpmwrlosC1.a1, sgpmwrlosC1.b1
D020620.22	SGP/SMOS/E13 - E13 SMOS lowered to surface to install counterweights	sgp1440smosE13.a0, sgp1smosE13.00, sgp1smosE13.a0, sgp30smosE13.a1, sgpsmosE13.01
D020905.3	SGP/MWR/C1 - IRT not insulated	sgpmwrlosC1.a1, sgpmwrlosC1.b1
D030312.10	SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures	sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1
D040318.8	SGP/SMOS/E13 - 6-month Calibration Checks	sgp1440smosE13.a0, sgp1smosE13.a0, sgp30smosE13.a1
D040824.1	SGP/MWR/C1 - Wet window flag "on" more frequently than expected	sgpmwrlosC1.a1, sgpmwrlosC1.b1
D080103.2	SGP/MWR/C1 - Missing data	sgpmwrlosC1.b1
D980126.1	Incorrect radiosonde serial numbers	sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980126.2	Incorrect surface temperature and humidity	sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980506.1	Incorrect surface values	sgpsondewrpnC1.a1
D980507.1	SGP/MWR/C1 - IRT lens replaced	sgpmwrlosC1.a1, sgpmwrlosC1.b1
D980507.4	Incorrect surface pressure	sgpsondewrpnC1.a1
D980511.2	Incorrect surface pressure	sgpsondewrpnC1.a1
D980716.1	Bad sounding	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980917.1	Incorrect surface readings	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D980917.2	Incorrect surface RH	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D981204.1	SGP/MWR/C1 - Erroneous internal temperature	sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1
D990106.1	SGP/MWR/B1/B4/B6/C1 - software change	sgpmwrlosB1.a0, sgpmwrlosB1.a1, sgpmwrlosB4.a0, sgpmwrlosB4.a1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB6.a0
D990113.1	SGP/MWR/B1/B4/B5/B6/C1 - software upgrade (version 3.27)	sgpmwrlosB1.a1, sgpmwrlosB4.a1, sgpmwrlosB5.a1, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB5.a0, sgpmwrtipB6.a0
D990124.2	SGP/SONDE - Dry bias in sonde RH	DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1, DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondeptuB1.00, DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, sgpsondeB1.00, sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1, sgpsondeB5.00, sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondeptuC1.00, sgpsondewnpnB1.a0, sgpsondewnpnB1.a1, sgpsondewnpnB4.a0, sgpsondewnpnB4.a1, sgpsondewnpnB5.a0, sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1, sgpsondewnpnC1.a0, sgpsondewnpnC1.a1, sgpsondewnprC1.a0, sgpsondewnprC1.a1, sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.00, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.00, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1, sgpsondewrprB1.00, sgpsondewrprB1.a0, sgpsondewrprB1.a1, sgpsondewrprB4.00, sgpsondewrprB4.a0, sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0, sgpsondewrprB5.a1, sgpsondewrprC1.00, sgpsondewrprC1.a0, sgpsondewrprC1.a1
D990210.1	SGP/SONDE - Wrong cal tape	sgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990303.1	SGP/SONDE - Pressure jump at launch	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990329.1	Incorrect surface RH	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D990513.1	SGP/SONDE - RH probably biased low in several soundings	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D991109.11	SG/SMOS/E13 - E13 SMOS down for tower replacement	sgp1440smosE13.a0, sgp1smosE13.00, sgp1smosE13.a0, sgp30smosE13.a1, sgpsmosE13.01
D991109.20	SGP/SMOS/E13 - E13 SMOS lowered to surface to install counterweights	sgp1440smosE13.a0, sgp1smosE13.00, sgp1smosE13.a0, sgp30smosE13.a1, sgpsmosE13.01
D991221.1	SGP/SONDE - Incorrect surface temperature	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D991228.1	SGP/SONDE - Incorrect surface temperature	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1

DQRID : D000606.1

Start Date	Start Time	End Date	End Time
10/19/1999	2230	11/17/1999	2025

Subject:	SGP/MWR/C1 - IRT removed
DataStreams:	sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:	There were no IRT data during this period because MWR #10, upon which the IRT is mounted, was returned to the vendor for upgrades and replaced with spare MWR #33 which does not have the mounting hardware or the electronics to accept the IRT.
Measurements:	sgpmwrlosC1.b1: Sky Infra-Red Temperature(sky_ir_temp) sgpmwrlosC1.a1: Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D020620.22

Start Date	Start Time	End Date	End Time
09/24/1999	1300	09/24/1999	1320

Subject:	SGP/SMOS/E13 - E13 SMOS lowered to surface to install counterweights
DataStreams:	sgp1440smosE13.a0, sgp1smosE13.00, sgp1smosE13.a0, sgp30smosE13.a1, sgpsmosE13.01
Description:	The E13 SMOS was lowered to the surface on 24 SEP 1999 between 1300 and 1320 GMT while counterweights were installed. All wind speed and direction data are incorrect during this period.
Measurements:	sgp1440smosE13.a0: Time of Minimum Wind Speed(time_min_wspd) Minimum of Wind speed(min_wspd) Time of Maximum Wind Speed(time_max_wspd) maximum wind speed (gusts)(max_wspd) sgp30smosE13.a1: Standard Deviation of wind direction(sd_deg) Standard Deviation of Wind Speed(sd_wspd) Wind Speed (vector averaged)(wspd_va) Mean Wind Speed(wspd) Unit Vector Wind Direction(wdir) sgp1smosE13.00: null(Raw data stream - documentation not supported) sgpsmosE13.01: null(Raw data stream - documentation not supported) sgp1smosE13.a0: Mean Wind Speed(wspd) Unit Vector Wind Direction(wdir) Wind Speed (vector averaged)(wspd_va) Standard Deviation of wind direction(sd_deg)

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DQRID : D020905.3

Start Date	Start Time	End Date	End Time
01/19/1994	0000	11/27/1998	1930

Subject:	SGP/MWR/C1 - IRT not insulated
DataStreams:	sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:	The downwelling IRT was insufficiently insulated to maintain an internal reference temperature above 0 degrees C (P971213.1). Measurements of sky temperature were over-estimated when instrument was below freezing.
Measurements:	sgpmwrlosC1.b1: Sky Infra-Red Temperature(sky_ir_temp) sgpmwrlosC1.a1: Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D030312.10

Start Date	Start Time	End Date	End Time
11/17/1999	1800	07/31/2002	2034

Subject:	SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures
DataStreams:	sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:	Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program.
Measurements:	sgp5mwravgC1.c1: Averaged total liquid water along LOS path(liq) Sky brightness temperature at 23.8 GHz(tbsky23) MWR column precipitable water vapor(vap) Sky brightness temperature at 31.4 GHz(tbsky31) sgpmwrlosC1.b1: Sky brightness temperature at 31.4 GHz(tbsky31) Averaged total liquid water along LOS path(liq) MWR column precipitable water vapor(vap) Sky brightness temperature at 23.8 GHz(tbsky23) sgp1mwravgC1.c1: Sky brightness temperature at 23.8 GHz(tbsky23) Averaged total liquid water along LOS path(liq) MWR column precipitable water vapor(vap) Sky brightness temperature at 31.4 GHz(tbsky31) sgpmwrlosC1.a1: MWR column precipitable water vapor(vap) Sky brightness temperature at 23.8 GHz(tbsky23) Sky brightness temperature at 31.4 GHz(tbsky31) Averaged total liquid water along LOS path(liq)

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DQRID : D040318.8

Start Date	Start Time	End Date	End Time
06/17/1994	1415	06/17/1994	1615
11/18/1994	2000	11/18/1994	2100
05/05/1995	1942	05/05/1995	2030
10/06/1995	1800	10/06/1995	1858
05/03/1996	1850	05/03/1996	2100
11/18/1996	2130	11/19/1996	0030
04/20/1997	0000	04/20/1997	2359
10/10/1997	1515	10/10/1997	1845
05/07/1998	2030	05/07/1998	2115
12/04/1998	1600	12/04/1998	1621
04/09/1999	1730	04/09/1999	2100
10/07/1999	1900	10/07/1999	1945
04/20/2000	1727	04/20/2000	1927
05/04/2000	1844	05/04/2000	1910
10/19/2000	1915	10/19/2000	2020

Subject:	SGP/SMOS/E13 - 6-month Calibration Checks
DataStreams:	sgp1440smosE13.a0, sgp1smosE13.a0, sgp30smosE13.a1
Description:	During the time periods specified, the SMOS.E13 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution.
Measurements:	sgp1440smosE13.a0: Minimum Temperature(min_temp) Time of Minimum Wind Speed(time_min_wspd) Maximum Barometric Pressure(max_bar_pres) Time of Maximum Relative Humidity(time_max_rh) Time of Minimum Barometric Pressure(time_min_bar_pres) Time of Maximum Temperature(time_max_temp) Minimum Vapor Pressure(min_vap_pres) Maximum Temperature(max_temp) Maximum Relative Humidity(max_rh) Time of Maximum Barometric Pressure(time_max_bar_pres) Minimum Relative Humidity(min_rh) Time of Minimum Vapor Pressure(time_min_vap_pres) Time of Maximum Vapor Pressure(time_max_vap_pres) Maximum Vapor Pressure(max_vap_pres) Time of Minimum Temperature(time_min_temp) Time of Minimum Relative Humidity(time_min_rh) Minimum of Wind speed(min_wspd) Time of Maximum Wind Speed(time_max_wspd) Minimum Barometric Pressure(min_bar_pres) maximum wind speed (gusts)(max_wspd) sgp30smosE13.a1: Standard Deviation of Relative Humidity(sd_rh) Relative humidity inside the instrument enclosure(rh) Vapor Pressure (kiloPascals)(vap_pres) Beam 0 Temperature(temp) Mean Wind Speed(wspd) Standard Deviation of Barometric Pressure(sd_bar_pres) barometric pressure(bar_pres) Standard Deviation of wind direction(sd_deg) Standard Deviation of Vapor Pressure(sd_vap_pres) Standard Deviation of Air Temperature(sd_temp) Standard Deviation of Wind Speed(sd_wspd) Wind Speed (vector averaged)(wspd_va) Unit Vector Wind Direction(wdir) sgp1smosE13.a0: Beam 0 Temperature(temp) Relative humidity inside the instrument enclosure(rh) Unit Vector Wind Direction(wdir) Standard Deviation of wind direction(sd_deg) Vapor Pressure (kiloPascals)(vap_pres) Mean Wind Speed(wspd) Wind Speed (vector averaged)(wspd_va) barometric pressure(bar_pres)

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DQRID : D040824.1

Start Date	End Date	End Time
12/01/1999	12/21/1999	2359
11/10/2000	12/08/2000	2359
01/26/2001	03/05/2001	2359
12/18/2001	12/31/2001	2359
02/11/2002	02/28/2002	2359
02/19/2003	03/26/2003	2359
10/15/2003	11/03/2003	2359

Subject:	SGP/MWR/C1 - Wet window flag "on" more frequently than expected
DataStreams:	sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:	The wet window flag was set "on" more frequently than expected during the time periods specified. This indicates the heater has been running more than necessary. In most instances the moisture sensitivity was adjusted at the end of these periods.
Measurements:	sgpmwrlosC1.b1: Sky brightness temperature at 31.4 GHz(tbsky31) MWR column precipitable water vapor(vap) Sky brightness temperature at 23.8 GHz(tbsky23) Water on Teflon window (1=WET, 0=DRY)(wet_window) Averaged total liquid water along LOS path(liq) sgpmwrlosC1.a1: Averaged total liquid water along LOS path(liq) Water on Teflon window (1=WET, 0=DRY)(wet_window) MWR column precipitable water vapor(vap) Sky brightness temperature at 31.4 GHz(tbsky31) Sky brightness temperature at 23.8 GHz(tbsky23)

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DQRID : D080103.2

Start Date	Start Time	End Date	End Time
07/21/1993	1809	07/23/1993	1541
08/07/1993	2143	08/09/1993	1308
08/14/1993	2233	08/16/1993	1300
08/29/1993	1207	08/31/1993	1206
09/17/1993	2158	09/20/1993	1311
10/02/1993	1612	10/04/1993	1338
10/09/1993	0741	10/11/1993	1319
11/12/1993	1207	11/15/1993	1413
11/19/1993	2027	11/21/1993	1957
12/14/1993	2300	03/21/1994	1759
03/28/1994	1459	03/30/1994	2225
05/16/1994	1900	05/19/1994	2018
06/22/1994	1600	07/11/1994	1859
07/16/1994	0300	07/19/1994	2006
09/03/1994	1647	09/05/1994	1341
09/09/1994	2325	09/11/1994	1543
12/17/1994	0049	12/19/1994	1441
01/05/1995	0000	01/05/1995	2359
01/28/1995	0054	01/30/1995	1443
04/01/1995	0000	04/03/1995	1610
05/09/1995	2200	05/11/1995	2350
06/24/1995	0903	06/26/1995	0159
07/07/1995	1625	07/10/1995	1409
07/19/1995	1741	07/21/1995	1906
07/28/1995	1900	07/31/1995	1918
08/22/1995	1616	08/25/1995	2359
12/01/1995	1434	01/11/1996	2214
01/12/1996	2000	01/23/1996	2030
01/23/1996	2332	02/08/1996	2359
08/06/1996	0000	08/06/1996	2359
09/04/1996	1910	09/08/1996	2359
09/14/1996	0700	09/16/1996	1759
09/30/1996	0000	09/30/1996	2359
12/01/1996	0000	12/01/1996	2359
07/01/1997	0000	07/01/1997	2359
02/20/1998	2339	02/22/1998	0042
05/04/1998	0000	05/04/1998	2359
07/18/1998	0337	07/20/1998	1355
09/28/1998	0000	09/28/1998	2359
10/10/1998	2359	10/12/1998	1959
10/17/1998	1705	10/19/1998	1535
12/25/1998	2233	12/28/1998	2026
02/06/1999	1235	02/08/1999	1652
03/13/1999	2048	03/15/1999	2040
07/23/1999	2059	07/26/1999	1408
12/04/1999	0800	12/06/1999	1821
01/07/2000	1446	02/02/2000	2224
05/24/2000	1455	05/31/2000	1505
06/06/2000	1620	06/14/2000	1451
09/01/2000	2200	09/05/2000	1526
09/15/2000	2057	09/18/2000	1339
09/23/2000	1236	09/25/2000	1430
01/13/2001	2011	01/16/2001	1647
02/24/2001	0230	02/26/2001	1508
03/03/2001	0701	03/05/2001	1546
03/10/2001	0702	03/12/2001	1535
03/17/2001	0702	03/19/2001	1422
03/24/2001	0703	03/26/2001	1516
03/30/2001	2038	04/02/2001	1423
05/05/2001	1042	05/07/2001	1514
05/18/2001	1534	05/21/2001	1451
06/22/2001	2200	06/25/2001	1438
06/30/2001	0616	07/02/2001	1435
07/28/2001	1944	07/30/2001	1357
08/24/2001	1348	08/27/2001	1751
09/07/2001	1842	09/10/2001	1439
09/15/2001	1533	09/17/2001	1459
10/13/2001	0033	10/15/2001	1526
11/03/2001	0840	11/05/2001	1613
11/10/2001	0558	11/13/2001	1518
11/16/2001	1701	11/19/2001	1706
12/21/2001	2153	12/24/2001	1442
01/30/2002	0845	02/11/2002	1632
03/02/2002	0339	03/04/2002	1533
03/09/2002	0340	03/11/2002	1621
06/26/2002	1639	06/28/2002	2057
09/01/2002	1002	09/03/2002	1332
12/21/2002	1124	12/23/2002	1510
01/04/2003	0703	01/06/2003	1529
08/09/2003	0037	08/11/2003	1456
08/23/2003	2101	08/25/2003	1456
10/12/2003	2025	10/14/2003	1414
11/29/2003	1840	12/01/2003	1502
01/24/2004	0743	01/26/2004	1505
02/14/2004	2316	02/17/2004	1520
09/04/2004	0250	09/07/2004	1419
10/09/2004	0745	10/11/2004	1739
10/16/2004	2250	10/18/2004	1355
11/13/2004	1849	11/15/2004	1521
12/03/2004	1940	12/06/2004	1454
01/15/2005	0652	01/18/2005	1446
01/22/2005	1449	01/24/2005	1444
06/10/2005	2118	06/13/2005	1603
08/05/2005	1701	08/30/2005	2001
10/07/2005	1658	11/16/2005	1945
11/18/2005	1801	11/21/2005	1521
11/23/2005	2201	11/25/2005	1550
11/26/2005	0101	11/28/2005	1543
12/03/2005	1043	12/05/2005	1559
01/14/2006	1822	01/17/2006	1512
01/21/2006	0708	01/23/2006	1515
02/03/2006	1903	02/06/2006	1533
02/25/2006	0730	02/27/2006	1420
07/01/2006	2225	07/03/2006	1413
11/28/2006	2143	12/01/2006	1911
06/09/2007	1150	06/11/2007	1300
07/07/2007	1642	07/09/2007	1304
08/03/2007	1601	11/19/2007	2135
12/22/2007	2112	12/24/2007	1504

Subject:	SGP/MWR/C1 - Missing data
DataStreams:	sgpmwrlosC1.b1
Description:	Data are missing and unrecoverable.
Measurements:	sgpmwrlosC1.b1: 31.4 GHz sky signal(sky31) Water on Teflon window (1=WET, 0=DRY)(wet_window) Dummy altitude for Zeb(alt) (tknd) 31.4 GHz blac2body+noise injection signal(bbn31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31) 23.8 GHz sky signal(sky23) 23.8 GHz blackbody+noise injection signal(bbn23) Sky brightness temperature at 31.4 GHz(tbsky31) lon(lon) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Averaged total liquid water along LOS path(liq) 31.4 GHz blackbody(bb31) Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23) Temperature correction coefficient at 31.4 GHz(tc31) Blackbody kinetic temperature(tkbb) Sky Infra-Red Temperature(sky_ir_temp) MWR column precipitable water vapor(vap) Ambient temperature(tkair) 23.8 GHz Blackbody signal(bb23) Sky brightness temperature at 23.8 GHz(tbsky23) Mixer kinetic (physical) temperature(tkxc) Temperature correction coefficient at 23.8 GHz(tc23) lat(lat) Time offset of tweaks from base_time(time_offset) base time(base_time)

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DQRID : D980126.1

Start Date	Start Time	End Date	End Time
01/01/1998	0000	12/31/1999	2359

Subject:	Incorrect radiosonde serial numbers
DataStreams:	sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	Radiosondes manufactured at Vaisala's Woburn, MA factory during the first of January 1998 have incorrect serial numbers. Instead of being numbered 8012XXXXX these sondes are numbered 7012XXXXX. Vaisala has been informed of this, has confirmed the problem, and has corrected their numbering for all subsequent sondes. 163 incorrectly numbered sondes were shipped to ARM on 1/9/98. Some have been used at the CF since 1/19/98:1430.
Measurements:	sgpsondewrpnC1.a0: Mean Wind Speed(wspd) Ascent Rate(asc) lon(lon) Surface dew point temperature(dp) lat(lat) Dummy altitude for Zeb(alt) Time offset of tweaks from base_time(time_offset) Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry) Wind Status(wstat) Wind Direction(deg) base time(base_time) sgpsondewrpnB5.a1: Ascent Rate(asc) Dry bulb temperature(tdry) Retrieved pressure profile(pres) base time(base_time) Wind Direction(deg) Time offset of tweaks from base_time(time_offset) Dummy altitude for Zeb(alt) lat(lat) V-component(v_wind) Mean Wind Speed(wspd) Surface dew point temperature(dp) lon(lon) U-component(u_wind) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) sgpsondewrpnB4.a0: Time offset of tweaks from base_time(time_offset) Dry bulb temperature(tdry) Retrieved pressure profile(pres) Mean Wind Speed(wspd) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Status(wstat) Ascent Rate(asc) lon(lon) base time(base_time) Surface dew point temperature(dp) Wind Direction(deg) lat(lat) sgpsondewrpnB1.a0: Wind Direction(deg) lat(lat) Ascent Rate(asc) Mean Wind Speed(wspd) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Retrieved pressure profile(pres) Wind Status(wstat) base time(base_time) Time offset of tweaks from base_time(time_offset) Surface dew point temperature(dp) lon(lon) sgpsondewrpnB6.a0: lat(lat) base time(base_time) Wind Direction(deg) Surface dew point temperature(dp) Mean Wind Speed(wspd) lon(lon) Time offset of tweaks from base_time(time_offset) Dummy altitude for Zeb(alt) Ascent Rate(asc) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Dry bulb temperature(tdry) sgpsondewrpnB5.a0: Time offset of tweaks from base_time(time_offset) Wind Direction(deg) base time(base_time) Dry bulb temperature(tdry) Dummy altitude for Zeb(alt) Ascent Rate(asc) Surface dew point temperature(dp) Wind Status(wstat) lat(lat) Relative humidity inside the instrument enclosure(rh) lon(lon) Retrieved pressure profile(pres) Mean Wind Speed(wspd) sgpsondewrpnB4.a1: Wind Status(wstat) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Surface dew point temperature(dp) lat(lat) Wind Direction(deg) Mean Wind Speed(wspd) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Dry bulb temperature(tdry) Ascent Rate(asc) lon(lon) U-component(u_wind) Dummy altitude for Zeb(alt) base time(base_time) sgpsondewrpnB6.a1: Mean Wind Speed(wspd) Relative humidity inside the instrument enclosure(rh) lon(lon) Dummy altitude for Zeb(alt) Retrieved pressure profile(pres) Wind Status(wstat) base time(base_time) V-component(v_wind) Time offset of tweaks from base_time(time_offset) Dry bulb temperature(tdry) U-component(u_wind) Wind Direction(deg) Surface dew point temperature(dp) Ascent Rate(asc) lat(lat) sgpsondewrpnC1.a1: Relative humidity inside the instrument enclosure(rh) lat(lat) lon(lon) U-component(u_wind) Dry bulb temperature(tdry) base time(base_time) Surface dew point temperature(dp) Ascent Rate(asc) Dummy altitude for Zeb(alt) Wind Direction(deg) V-component(v_wind) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Retrieved pressure profile(pres) Mean Wind Speed(wspd) sgpsondewrpnB1.a1: Wind Direction(deg) Dry bulb temperature(tdry) Wind Status(wstat) Ascent Rate(asc) U-component(u_wind) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) Retrieved pressure profile(pres) lon(lon) lat(lat) V-component(v_wind) Dummy altitude for Zeb(alt) Mean Wind Speed(wspd) Relative humidity inside the instrument enclosure(rh) base time(base_time)

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DQRID : D980126.2

Start Date	Start Time	End Date	End Time
01/19/1998	1130	01/19/1998	1130

Subject:	Incorrect surface temperature and humidity
DataStreams:	sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	Incorrect values of surface temperature and relative humidity were entered by the operator. The surface temperature was entered as 17.5 degC; the first value reported by the sonde was -3.6 degC. The surface humidity was entered as 26; the first value reported by the sonde was 81%. It appears that the operator used the inside temperature/humidity rather than the sonde-reported outside temperature/humidity. Only the first few samples of the sounding will be affected. Note that the delta-check QC flag is set by this error.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D980506.1

Start Date	Start Time	End Date	End Time
04/29/1998	1431	04/29/1998	1431

Subject:	Incorrect surface values
DataStreams:	sgpsondewrpnC1.a1
Description:	The surface pressure, temperature, and relative humidity are incorrect for this soundings. The values in the sounding netCDF file (975.6, 3.2, 86) are different from the surface observations in the site ops log (978.9, 9.1, and 83) and from the values in the raw radiosonde data file at the moment just before ascent (978.7, 9.5, 83). The reason for the differences are unknown, but insofar as the surface values are manually entered by the operator into both the log (where they are correct) and into the sounding file (where they are incorrect) an operator miscue is a possibility. The major effect of this problem will be incorrect absolute altitude.
Measurements:	sgpsondewrpnC1.a1: Wind Status(wstat) lon(lon) Relative humidity inside the instrument enclosure(rh) V-component(v_wind) Ascent Rate(asc) Dummy altitude for Zeb(alt) Time offset of tweaks from base_time(time_offset) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D980507.1

Start Date	Start Time	End Date	End Time
04/01/1998	0000	04/30/1998	2042

Subject:	SGP/MWR/C1 - IRT lens replaced
DataStreams:	sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:	During my recent trip to the SGP I noticed that the IRT was reading too high (about 250 K for clear sky with less than 2 cm PWV). The anti-reflective coating on the lens appeared to have deteriorated significantly. Because I observed no change in the measurements after cleaning the lens, I replaced it with the original lens which had been saved as a spare. The measured sky temperature fell to 232 K, which appeared more reasonable. The next morning I realized that I had forgotten to clean the lens after replacing it. After cleaning the IR temperature fell from 219 to 213 K with about 1.2 cm PWV. This appeared to be in agreement with Martin Platt's radiometer which measures the same passband (10 micrometers.) Upon returning to Ames, I compared the IRT with AERI for April 1998. It appears that at least as far back as 1 April the IRT data are bad.
Measurements:	sgpmwrlosC1.b1: Sky Infra-Red Temperature(sky_ir_temp) sgpmwrlosC1.a1: Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D980507.4

Start Date	Start Time	End Date	End Time
05/06/1998	0832	05/06/1998	0832

Subject:	Incorrect surface pressure
DataStreams:	sgpsondewrpnC1.a1
Description:	The operator transposed the digits of the surface pressure entering 976.3 instead of 967.3. The ops log shows 967.3 for the sonde and 968.3 for the THWAPS. Analysis of the absolutely raw sonde data shows 968.0 at the system-identified launch time. Note that because the output pressure data are smoothed, under the assumption that the surface data value is true, the first value reported by the sonde after launch 970.4 also is incorrect. The raw value corresponding to the sample after launch is 966.6. The absolute pressure values will be incorrect for the first few samples of the sounding, as will be the ascent rates for the first 30 seconds. The absolute altitude values also will be in error.
Measurements:	sgpsondewrpnC1.a1: Wind Status(wstat) lon(lon) Relative humidity inside the instrument enclosure(rh) V-component(v_wind) Ascent Rate(asc) Dummy altitude for Zeb(alt) Time offset of tweaks from base_time(time_offset) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D980511.2

Start Date	Start Time	End Date	End Time
05/09/1998	1431	05/09/1998	1431

Subject:	Incorrect surface pressure
DataStreams:	sgpsondewrpnC1.a1
Description:	The operator entered 960.2 for the surface pressure in both the log and the system. The first reading from the sonde is 950.9. Examination of the absolutely raw data shows that the sonde pressure before launch was 952.3. The THWAPS reading was 964.2. From the raw data it appears that either the system was not reset before this sounding or that a second sonde was started without resetting the system. The sonde pressure may be low in absolute terms or the operator may have mis-entered the actual sonde reading. In either case the absolute altitude will be wrong in this sounding and the ascent rates will be incorrect for the first 30 seconds.
Measurements:	sgpsondewrpnC1.a1: Wind Status(wstat) lon(lon) Relative humidity inside the instrument enclosure(rh) V-component(v_wind) Ascent Rate(asc) Dummy altitude for Zeb(alt) Time offset of tweaks from base_time(time_offset) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D980716.1

Start Date	Start Time	End Date	End Time
07/14/1998	2346	07/14/1998	2346

Subject:	Bad sounding
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	Data from this sounding look very fragmented as if only a few actual points were collected and intermediate points were intepolated. In a general sense this sounding looks 'weird' and should not be trusted. I do not yet have access to r1 so I can't look at the raw data, but I doubt that it will shed much light on the situation.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D980917.1

Start Date	Start Time	End Date	End Time
05/09/1998	2029	05/09/1998	2029

Subject:	Incorrect surface readings
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	It appears that the operator entered an incorrect set of surface data for the subject sounding. The sounding has surface PTU as 975.6 hPa, 20.0 degC, and 93% RH - the corresponding THWAPS readings are 969.7 hPa, 19.9 degC, and 72.1 %RH. The OMIS log for the subject souding shows sonde surface values of 969.2 hPa, 17.6 degC, and 70% RH.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D980917.2

Start Date	Start Time	End Date	End Time
05/07/1998	2329	05/07/1998	2329

Subject:	Incorrect surface RH
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	Because of what appears to be a typographical error, the operator entered 5% RH when the surface RH was 54% RH. The corresponding THWAPS reading is 50.1% RH and the OMIS log shows 54%RH.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D981204.1

Start Date	Start Time	End Date	End Time
10/21/1998	1900	11/12/1998	2200

Subject:	SGP/MWR/C1 - Erroneous internal temperature
DataStreams:	sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:	After the new internal temperature sensor was installed it was discovered that the scaling resistor was incorrect. (The 24.9 kohm 0.1% resistor had accidently been replaced with a 24.0 kohm resistor when the analog board was repaired by the manufacturer several years ago.) A resistor having the correct value was installed 981112.
Measurements:	sgpmwrtipC1.a1: Ambient temperature(tkair) sgpmwrlosC1.b1: Ambient temperature(tkair) sgpmwrlosC1.a1: Ambient temperature(tkair)

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DQRID : D990106.1

Start Date	Start Time	End Date	End Time
04/03/1995	0000	10/12/1998	1900

Subject:	SGP/MWR/B1/B4/B6/C1 - software change
DataStreams:	sgpmwrlosB1.a0, sgpmwrlosB1.a1, sgpmwrlosB4.a0, sgpmwrlosB4.a1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB6.a0
Description:	The MWR operating software was changed on 12 October 1998 to provide additional functionality as described below. This change affects the format of the raw and ingested data. NEW FEATURES 1. Faster sampling rate Standard line-of-sight (LOS) observations can now be acquired at 15-second intervals vs. 20-second intervals previously. (The standard LOS cycle is comprised of one sky sample per blackbody sample and gain update.) 2. More flexible sampling strategy Multiple sky observations can be acquired during a LOS cycle, up to 1024 per gain update. This permits sky samples to be acquired at intervals of 2.67 seconds for improved temporal resolution of cloud liquid water variations and better coordination with the millimeter cloud radar during IOPs. 3. Separation of zenith LOS observations from TIP data When the radiometer is in TIP mode, the zenith LOS observations are now extracted, the PWV and LWP computed and reported separately in the output file. This eliminates the periods of missing LOS data during calibration checks/updates. 4. Automatic self-calibration The software now permits the calibration to be updated at specified intervals or continuously. In the first case, LOS mode is automatically changed to TIP mode at user-specified intervals or whenever clear sky conditions occur, the tip data reduced, the calibration updated ,and the radiometer returned to LOS mode without operator intervention. In the second case, the radiometer is continuously is TIP mode until changed by the operator. 5. Graphical user display The graphical display is comprised of a status display, a message display, a temperature plot, a plot of the retrieved PWV and LWP, and (in TIP mode) a plot of the latest tip curves. Editor's Note: The SGP.C1 data were reprocessed in 2004 and enhancement #3 described above was applied to the data prior to Oct 1998. The SGP.BF data are queued for reprocessing as well.
Measurements:	sgpmwrtipB1.a0: Noise injection temp at 31.4 GHz derived from this tip(tnd31I) Noise injection temp at 23.8 GHz derived from this tip(tnd23I) sgpmwrlosB1.a1: Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Ambient temperature(tkair) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) (tknd) sgpmwrlosB4.a0: Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) (tknd) Ambient temperature(tkair) sgpmwrlosB6.a0: (tknd) Ambient temperature(tkair) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) sgpmwrlosC1.b1: (tknd) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Ambient temperature(tkair) sgpmwrtipB6.a0: Noise injection temp at 31.4 GHz derived from this tip(tnd31I) Noise injection temp at 23.8 GHz derived from this tip(tnd23I) sgpmwrlosB1.a0: (tknd) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Ambient temperature(tkair) sgpmwrtipB4.a0: Noise injection temp at 31.4 GHz derived from this tip(tnd31I) Noise injection temp at 23.8 GHz derived from this tip(tnd23I) sgpmwrlosC1.a1: Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) (tknd) Ambient temperature(tkair) sgpmwrlosB4.a1: Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Ambient temperature(tkair) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) (tknd) sgpmwrlosB6.a1: Ambient temperature(tkair) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) (tknd) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)

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DQRID : D990113.1

Start Date	Start Time	End Date	End Time
07/21/1993	1406	01/12/1999	2359

Subject:	SGP/MWR/B1/B4/B5/B6/C1 - software upgrade (version 3.27)
DataStreams:	sgpmwrlosB1.a1, sgpmwrlosB4.a1, sgpmwrlosB5.a1, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB5.a0, sgpmwrtipB6.a0
Description:	At 00:00 GMT on 7 January version 3.27 of the MWR operating program was installed and made operational at the SGP central facility (C1). No problems were noted over the next few days and the boundary facility MWRs (B1, B4, B5, B6) were upgraded at 20:00 GMT on 11 January. This version includes a beam width correction I developed as well as providing the capability to automatically level the elevation mirror (that is, to automatically detect and correct offsets in the elevation angle stepper motor position.) On 12 January I discovered that the '486-based MWR computers at B1, B4 and B6 were not executing the system command to move and rename the data files so that the ARM data system could retrieve them. Reducing the length of the storage arrays in the auto-leveling feature from 1000 to 250 resolved the problem. This results in the auto-leveling being based on only 4 hours of clear sky data rather than 16 hours at B5 and C1. This version of the program is 3.28. Version 3.27 (running at B5 and C1) can be installed if and when these computers are upgraded to Pentium-class machines. The improvement in the quality of the tip curves resulting from the auto-leveling has been dramatic: differences in the brightness temperatures at 3 airmasses (19.5 and 160.5 degrees) have been reduced from +/- 5 K to +/- 0.5 K. The goodness-of-fit coefficient for the tip curves has improved from about 0.995 to over 0.998. In order to take full advantage of this improvement to detect and reject cloudy tip curves, the minimum value of the goodness-of-fit coefficient for a valid tip curve has been increased from 0.995 to 0.998. Editor's Note: The SGP.C1 data were reprocessed in 2004 to produce a common DOD for all time. The 1996-1998 data reprocessing included beam width and mirror-leveling corrections, but the data prior to that range did not have these corrections applied.
Measurements:	sgpmwrtipB1.a0: 31.4 GHz sky signal(31tipsky) 23.8 GHz sky signal(23tipsky) sgpmwrlosB5.a1: 31.4 GHz sky brightness temperature(31tbsky) MWR column precipitable water vapor(vap) Averaged total liquid water along LOS path(liq) 23.8 GHz sky brightness temperature(23tbsky) sgpmwrtipB5.a0: 31.4 GHz sky signal(31tipsky) 23.8 GHz sky signal(23tipsky) sgpmwrlosB1.a1: 23.8 GHz sky brightness temperature(23tbsky) MWR column precipitable water vapor(vap) Averaged total liquid water along LOS path(liq) 31.4 GHz sky brightness temperature(31tbsky) sgpmwrlosC1.b1: Sky brightness temperature at 31.4 GHz(tbsky31) Averaged total liquid water along LOS path(liq) MWR column precipitable water vapor(vap) Sky brightness temperature at 23.8 GHz(tbsky23) sgpmwrtipB6.a0: 23.8 GHz sky signal(23tipsky) 31.4 GHz sky signal(31tipsky) sgpmwrtipB4.a0: 31.4 GHz sky signal(31tipsky) 23.8 GHz sky signal(23tipsky) sgpmwrlosC1.a1: Sky brightness temperature at 31.4 GHz(tbsky31) MWR column precipitable water vapor(vap) Sky brightness temperature at 23.8 GHz(tbsky23) Averaged total liquid water along LOS path(liq) sgpmwrlosB4.a1: 31.4 GHz sky brightness temperature(31tbsky) Averaged total liquid water along LOS path(liq) 23.8 GHz sky brightness temperature(23tbsky) MWR column precipitable water vapor(vap) sgpmwrlosB6.a1: Averaged total liquid water along LOS path(liq) 31.4 GHz sky brightness temperature(31tbsky) 23.8 GHz sky brightness temperature(23tbsky) MWR column precipitable water vapor(vap)

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DQRID : D990124.2

Start Date	Start Time	End Date	End Time
05/27/1992	0000	05/31/2002	2359

Subject:	SGP/SONDE - Dry bias in sonde RH
DataStreams:	DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1, DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondeptuB1.00, DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, sgpsondeB1.00, sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1, sgpsondeB5.00, sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondeptuC1.00, sgpsondewnpnB1.a0, sgpsondewnpnB1.a1, sgpsondewnpnB4.a0, sgpsondewnpnB4.a1, sgpsondewnpnB5.a0, sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1, sgpsondewnpnC1.a0, sgpsondewnpnC1.a1, sgpsondewnprC1.a0, sgpsondewnprC1.a1, sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.00, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.00, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1, sgpsondewrprB1.00, sgpsondewrprB1.a0, sgpsondewrprB1.a1, sgpsondewrprB4.00, sgpsondewrprB4.a0, sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0, sgpsondewrprB5.a1, sgpsondewrprC1.00, sgpsondewrprC1.a0, sgpsondewrprC1.a1
Description:	Vaisala has confirmed ARM findings of an apparent dry bias in the relative humidity measured by RS-80H radiosondes. The cause of the dry bias is thought to be contamination of the humidity sensor by volatile organic substances originating from some plastic parts of the radiosonde. The amount of contamination is a function of the time between the date of sonde manufacture and its use. All RS-80H sondes manufactured before week 34 of 1998 will show this bias. After week 34 of 1998 Vaisala changed its packaging to reduce, but not eliminate the contamination problem. Starting with RS-80 radiosonde manufactured in late June 2000 Vaisala enclosed the sensor boom in an inert plastic shield, thereby eliminating the contamination that caused the dry bias. Starting in May 2001 at the SGP, May 2002 at the TWP, and later 2002 at the NSA, ARM has moved to using RS-90 radiosondes. These sondes are not subject to the contaminatino that caused the dry bias. Vaisala is in the process of developing an algorithm that can be used to estimate the correct RH from knowledge of the sonde age. All of the ARM sounding data have sufficient metadata available to apply the correction. Additionally, ARM has funded a Science Team effort (Milosevich) to develop a 'best' correction algorithm for the RS-80 radiosonde humidity data. When completed this algorithm will allow us to reprocess the accumulated RS-80 data and produce a new data platform with what we hope will be more accurate data.
Measurements:	sgpsondeB4.00: null(Raw data stream - documentation not supported) DsgpsondeB5.00: (Development raw data stream - documentation not supported) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) DsgpsondeptuB6.00: (Development raw data stream - documentation not supported) DsgpsondenogcptucalcB1.c1: (Development data stream - documentation not supported) sgpsondewrpnB6.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) DsgpsondeptuC1.00: (Development raw data stream - documentation not supported) sgpsondewnprC1.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) DsgpsondenogcptucalcB5.c1: (Development data stream - documentation not supported) DsgpsondeptucalcC1.c1: (Development data stream - documentation not supported) sgpsondewnpnB4.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondeB6.00: null(Raw data stream - documentation not supported) sgpsondewrprB4.00: null(Raw data stream - documentation not supported) DsgpsondeptuB1.00: (Development raw data stream - documentation not supported) DsgpsondenogcptucalcC1.c1: (Development data stream - documentation not supported) sgpsondewrpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrpnB1.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrprC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnB1.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrprB5.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondeB5.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrprB5.00: null(Raw data stream - documentation not supported) DsgpsondeC1.00: (Development raw data stream - documentation not supported) sgpsondewrprB1.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondeB1.00: null(Raw data stream - documentation not supported) sgpsondeptuC1.00: null(Raw data stream - documentation not supported) DsgpsondenogcptucalcB4.c1: (Development data stream - documentation not supported) DsgpsondeB1.a0: (Development data stream - documentation not supported) DsgpsondeC1.a1: (Development data stream - documentation not supported) DsgpsondeptucalcB5.c1: (Development data stream - documentation not supported) sgpsondewrprB1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrpnB1.00: null(Raw data stream - documentation not supported) sgpsondeB1.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) DsgpsondeC1.a0: (Development data stream - documentation not supported) DsgpsondeB4.a1: (Development data stream - documentation not supported) DsgpsondeptuB4.00: (Development raw data stream - documentation not supported) sgpsondeB1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrprB5.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondeC1.00: null(Raw data stream - documentation not supported) sgpsondewnpnB1.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrpnB6.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrprC1.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondeC1.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrprC1.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) DsgpsondeptuB5.00: (Development raw data stream - documentation not supported) sgpsondewrpnB5.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrprB4.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) DsgpsondeB1.a1: (Development data stream - documentation not supported) sgpsondeB5.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewnpnB6.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) DsgpsondeB5.a1: (Development data stream - documentation not supported) DsgpsondenogcwrpnB1.c1: (Development data stream - documentation not supported) sgpsondewrprB1.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrpnB5.00: null(Raw data stream - documentation not supported) DsgpsondeB4.a0: (Development data stream - documentation not supported) DsgpsondenogcwrpnB4.c1: (Development data stream - documentation not supported) DsgpsondeB5.a0: (Development data stream - documentation not supported) sgpsondewnpnB4.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnprC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrpnB5.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewnpnB5.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) DsgpsondeB4.00: (Development raw data stream - documentation not supported) sgpsondewrpnB6.00: null(Raw data stream - documentation not supported) sgpsondewrprB4.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewnpnB1.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondeB4.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondeC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewrpnB4.00: null(Raw data stream - documentation not supported) DsgpsondenogcwrpnB5.c1: (Development data stream - documentation not supported) sgpsondewnpnC1.a0: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrpnB4.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) DsgpsondeB1.00: (Development raw data stream - documentation not supported) sgpsondeB4.a0: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnB6.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewrpnB4.a1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh) sgpsondewnpnB5.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) DsgpsondeptucalcB4.c1: (Development data stream - documentation not supported) DsgpsondenogcwrpnC1.c1: (Development data stream - documentation not supported) sgpsondeB5.00: null(Raw data stream - documentation not supported) DsgpsondeptucalcB1.c1: (Development data stream - documentation not supported)

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DQRID : D990210.1

Start Date	Start Time	End Date	End Time
02/09/1999	0834	02/09/1999	1016

Subject:	SGP/SONDE - Wrong cal tape
DataStreams:	sgpsondewndcalcC1.c1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	There is something wrong with this sounding, its not clear exactly what happened, however. The first values reported by the radiosonde are much different from those entered by the operator. My impression is that this is a calibration tape mixup. The raw data file shows that the sounding software was initialized twice for this sounding, the first time showing sonde 823360910, the second time showing sonde 819351814. There is no enties in the operations log that describe a problem with a sonde before launch.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewndcalcC1.c1: lat(lat) Flags for input v_wind values(v_wind_flags) Flags for input u_wind values(u_wind_flags) W-to-E Component of wind, calculated(u_wind_calc) base time(base_time) S-to-N Component of Wind, calculated(v_wind_calc) Retrieved pressure profile(pres) lon(lon) Time offset of tweaks from base_time(time_offset) Dummy altitude for Zeb(alt) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) U-component(u_wind) Dry bulb temperature(tdry) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D990303.1

Start Date	Start Time	End Date	End Time
03/02/1999	0828	03/02/1999	0828

Subject:	SGP/SONDE - Pressure jump at launch
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	The difference between the sonde-reported pressure at the surface (969.1 hPa) and the first pressure value reported after launch (963.5) is larger than expected. This may indicate that either the pressure sensor was jarred at launch, that the system failed to correctly identify the launch start time, or some other problem. The ascent rates during the first 30 seconds of the sounding will be incorrect as will the absolute altitudes during the sounding.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D990329.1

Start Date	Start Time	End Date	End Time
03/22/1999	0230	03/22/1999	0230

Subject:	Incorrect surface RH
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	The operator entered an incorrect value (7.5%) for the surface RH for this sounding. The correct value should have been 70%. The operator noticed the error after the sounding had been completed and reported it in his log.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D990513.1

Start Date	Start Time	End Date	End Time
05/10/1999	1130	05/11/1999	2041

Subject:	SGP/SONDE - RH probably biased low in several soundings
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	In the process of moving storage facilties, site operations uncovered some old radiosondes (vintage April 1998) that were used in several soundings starting on May 10 at 0530 and continuing at least through May 11 at 2040. Because these sondes are so old and pre-date Vaisala's repackaging they are likely subject to the sensor contamination problem that results in a dry bias in RH. The sondes in question have serial numbers 816XXXXXX.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D991109.11

Start Date	Start Time	End Date	End Time
04/14/1999	2100	05/03/1999	2055

Subject:	SG/SMOS/E13 - E13 SMOS down for tower replacement
DataStreams:	sgp1440smosE13.a0, sgp1smosE13.00, sgp1smosE13.a0, sgp30smosE13.a1, sgpsmosE13.01
Description:	The E13 SMOS was shut down from 14 APR 1999 at 2100 GMT until 3 MAY 1999 at 2055 GMT while the tower was replaced.
Measurements:	sgp1440smosE13.a0: Time of Minimum Wind Speed(time_min_wspd) Maximum Barometric Pressure(max_bar_pres) Time of Maximum Relative Humidity(time_max_rh) Time of Minimum Barometric Pressure(time_min_bar_pres) Time of Maximum Temperature(time_max_temp) Minimum Snow Depth(min_snow_depth) lat(lat) Maximum Temperature(max_temp) Maximum Relative Humidity(max_rh) Dummy altitude for Zeb(alt) Minimum Relative Humidity(min_rh) Time of Minimum Vapor Pressure(time_min_vap_pres) Time of Maximum Vapor Pressure(time_max_vap_pres) Minimum of Wind speed(min_wspd) Minimum Barometric Pressure(min_bar_pres) maximum wind speed (gusts)(max_wspd) Minimum Temperature(min_temp) Time of Minimum Snow Depth(time_min_snow) Minimum Vapor Pressure(min_vap_pres) Time of Maximum Barometric Pressure(time_max_bar_pres) Time offset of tweaks from base_time(time_offset) Maximum Snow Depth(max_snow) Maximum Vapor Pressure(max_vap_pres) Time of Maximum Snow Depth(time_max_snow) Time of Minimum Temperature(time_min_temp) base time(base_time) Time of Minimum Relative Humidity(time_min_rh) Time of Maximum Wind Speed(time_max_wspd) lon(lon) sgp30smosE13.a1: Standard Deviation of Relative Humidity(sd_rh) Relative humidity inside the instrument enclosure(rh) Snow Depth Sensor(snow_sen) Dummy altitude for Zeb(alt) Hourly precipitation(precip) Snow Depth(snow) barometric pressure(bar_pres) Standard Deviation of wind direction(sd_deg) Batter Voltage(vbat) Standard Deviation of Air Temperature(sd_temp) lon(lon) Standard Deviation of Wind Speed(sd_wspd) Unit Vector Wind Direction(wdir) Vapor Pressure (kiloPascals)(vap_pres) Beam 0 Temperature(temp) Mean Wind Speed(wspd) Standard Deviation of Barometric Pressure(sd_bar_pres) Time offset of tweaks from base_time(time_offset) Standard Deviation of Vapor Pressure(sd_vap_pres) lat(lat) Wind Speed (vector averaged)(wspd_va) base time(base_time) sgp1smosE13.00: null(Raw data stream - documentation not supported) sgpsmosE13.01: null(Raw data stream - documentation not supported) sgp1smosE13.a0: Hourly precipitation(precip) Relative humidity inside the instrument enclosure(rh) Unit Vector Wind Direction(wdir) base time(base_time) Dummy altitude for Zeb(alt) Standard Deviation of wind direction(sd_deg) Vapor Pressure (kiloPascals)(vap_pres) Mean Wind Speed(wspd) barometric pressure(bar_pres) Beam 0 Temperature(temp) lat(lat) lon(lon) Time offset of tweaks from base_time(time_offset) Wind Speed (vector averaged)(wspd_va)

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DQRID : D991109.20

Start Date	Start Time	End Date	End Time
09/24/1999	1300	09/24/1999	1320

Subject:	SGP/SMOS/E13 - E13 SMOS lowered to surface to install counterweights
DataStreams:	sgp1440smosE13.a0, sgp1smosE13.00, sgp1smosE13.a0, sgp30smosE13.a1, sgpsmosE13.01
Description:	The E13 SMOS was lowered to the surface on 24 SEP 1999 between 1300 and 1320 GMT while counterweights were installed. All temperature and humidity data are questionable during this period.
Measurements:	sgp1440smosE13.a0: Minimum Temperature(min_temp) Time of Maximum Relative Humidity(time_max_rh) Time of Maximum Temperature(time_max_temp) Maximum Temperature(max_temp) Minimum Vapor Pressure(min_vap_pres) Maximum Relative Humidity(max_rh) Minimum Relative Humidity(min_rh) Time of Minimum Vapor Pressure(time_min_vap_pres) Time of Maximum Vapor Pressure(time_max_vap_pres) Maximum Vapor Pressure(max_vap_pres) Time of Minimum Temperature(time_min_temp) Time of Minimum Relative Humidity(time_min_rh) sgp30smosE13.a1: Standard Deviation of Relative Humidity(sd_rh) Relative humidity inside the instrument enclosure(rh) Vapor Pressure (kiloPascals)(vap_pres) Beam 0 Temperature(temp) Standard Deviation of Vapor Pressure(sd_vap_pres) Standard Deviation of Air Temperature(sd_temp) sgp1smosE13.00: null(Raw data stream - documentation not supported) sgpsmosE13.01: null(Raw data stream - documentation not supported) sgp1smosE13.a0: Beam 0 Temperature(temp) Relative humidity inside the instrument enclosure(rh) Unit Vector Wind Direction(wdir) Vapor Pressure (kiloPascals)(vap_pres) Mean Wind Speed(wspd) Wind Speed (vector averaged)(wspd_va)

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DQRID : D991221.1

Start Date	Start Time	End Date	End Time
12/18/1999	0530	12/18/1999	0530

Subject:	SGP/SONDE - Incorrect surface temperature
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	The operator entered 20.0 degrees rather than the true temperature of 2.0 degrees.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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DQRID : D991228.1

Start Date	Start Time	End Date	End Time
12/22/1999	2330	12/22/1999	2330

Subject:	SGP/SONDE - Incorrect surface temperature
DataStreams:	sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:	The operator entered the surface temperature as 25 degC rather than the correct 2.5 deg C. This is the second time in a week this type of error has occurred. I have sent a separate e-mail to site ops.
Measurements:	sgpsondewrpnC1.a0: Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) lat(lat) Mean Wind Speed(wspd) Ascent Rate(asc) Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) lon(lon) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Time offset of tweaks from base_time(time_offset) base time(base_time) sgpsondewrpnC1.00: null(Raw data stream - documentation not supported) sgpsondewrpnC1.a1: lon(lon) V-component(v_wind) Ascent Rate(asc) Time offset of tweaks from base_time(time_offset) Wind Status(wstat) Relative humidity inside the instrument enclosure(rh) Dummy altitude for Zeb(alt) Wind Direction(deg) Retrieved pressure profile(pres) Dry bulb temperature(tdry) U-component(u_wind) base time(base_time) Surface dew point temperature(dp) Mean Wind Speed(wspd) lat(lat)

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