DQRs for Session: 118251 User:dmfoperCompleted: 03-17-2009

Data Quality Reports for Session: 118251 User: dmfoper Completed: 03/17/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D070912.1	SGP/IRT/E13 - Missing data	sgpirt200msE13.a1, sgpirtE13.b1
D071217.6	SGP/IRT/E15 - Instrument noise problem	sgpirt200msE15.a1, sgpirtE15.00, sgpirtE15.b1
D080131.1	SGP/IRT/E13 - Reprocess: Sky temperature bias	sgpirt200msE13.a1, sgpirtE13.b1
D081217.1	SGP/IRT/E13 - Reprocess: wrong units	sgpirt200msE13.a1, sgpirtE13.b1

DQRID : D070912.1

Start Date	Start Time	End Date	End Time
07/25/2007	2200	07/27/2007	1457
08/29/2007	1328	09/06/2007	2000
09/08/2007	0700	09/10/2007	1937
09/11/2007	0001	09/19/2007	1410
09/20/2007	0151	10/10/2007	2118
10/11/2007	0156	10/31/2007	1852
12/22/2007	1848	12/26/2007	2006
01/07/2008	0000	01/10/2008	1430
01/28/2008	1857	01/30/2008	1631
02/09/2008	2002	02/13/2008	1414
02/13/2008	2040	02/22/2008	1815
03/02/2008	0430	03/07/2008	1736
03/09/2008	2200	05/02/2008	2209
05/03/2008	1756	05/27/2008	1148
05/27/2008	1732	08/04/2008	0708
08/04/2008	1400	10/16/2008	2018

Subject:	SGP/IRT/E13 - Missing data
DataStreams:	sgpirt200msE13.a1, sgpirtE13.b1
Description:	Data are missing and unrecoverable.
Measurements:	sgpirt200msE13.a1: Internal Reference Infra Red Temperature(ref_ir_temp) base time(base_time) time(time) Dummy altitude for Zeb(alt) Time offset of tweaks from base_time(time_offset) Sky Infra-Red Temperature(sky_ir_temp) lon(lon) lat(lat) sgpirtE13.b1: Internal Reference Infra Red Temperature(ref_ir_temp) lat(lat) Sky Infra-Red Temperature(sky_ir_temp) Sky Infra Red Temperature Minima(sky_ir_temp_min) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std) base time(base_time) Number of Samples Averaged(samples_in_average) Dummy altitude for Zeb(alt) Sky Infra Red Temperature Maxima(sky_ir_temp_max) lon(lon) Time offset of tweaks from base_time(time_offset) Standard Deviation of Internal Reference Infra Red Temperature(ref_ir_temp_std) time(time)

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DQRID : D071217.6

Start Date	Start Time	End Date	End Time
07/12/2005	1530	03/28/2008	1722

Subject:	SGP/IRT/E15 - Instrument noise problem
DataStreams:	sgpirt200msE15.a1, sgpirtE15.00, sgpirtE15.b1
Description:	The data was much noisier than other nearby sites (a factor of 4-5 times more). The connections and communication and other settings were checked. The IRT was replaced on 1/29/2008 at 17:37 but the response time was incorrectly set to 0.01 s. This problem was corrected when the setting was changed to 0.10 s.
Measurements:	sgpirtE15.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra-Red Temperature(sky_ir_temp) sgpirt200msE15.a1: Sky Infra-Red Temperature(sky_ir_temp) sgpirtE15.00: Raw data stream - documentation not supported(raw)

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DQRID : D080131.1

Start Date	Start Time	End Date	End Time
01/11/2006	0000	07/25/2007	2315

Subject:	SGP/IRT/E13 - Reprocess: Sky temperature bias
DataStreams:	sgpirt200msE13.a1, sgpirtE13.b1
Description:	Measurements of sky temperature, especially those <250K,, were positively biased compared with AERI because there was no compensation for the effect of the emissivity and temperature of the gold mirror. The problem was corrected by changing the IRT emissivity from 1.000 to 0.987, adding an RTD and transmitter electronics to measure the temperature of the mirror, and changing the ambient temperature measurement for internal reference to external mirror temperature. Use sky temperature measurements less than 230K with caution. Biases as large as 30K have been observed when the actual temperature, as measured by AERI, is less than 210 K.
Measurements:	sgpirt200msE13.a1: Sky Infra-Red Temperature(sky_ir_temp) sgpirtE13.b1: Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Sky Infra Red Temperature Minima(sky_ir_temp_min)

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DQRID : D081217.1

Start Date	Start Time	End Date	End Time
09/12/2008	2110	10/27/2008	2030

Subject:	SGP/IRT/E13 - Reprocess: wrong units
DataStreams:	sgpirt200msE13.a1, sgpirtE13.b1
Description:	While diagnosing serial communication problems, the IRT configuration was reset to factory defaults so the temperature unit parameter was set to C instead of K.
Measurements:	sgpirt200msE13.a1: Internal Reference Infra Red Temperature(ref_ir_temp) Sky Infra-Red Temperature(sky_ir_temp) sgpirtE13.b1: Internal Reference Infra Red Temperature(ref_ir_temp) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Sky Infra Red Temperature Minima(sky_ir_temp_min)

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