DQRs for Session: 115561 User:shermanCompleted: 11-07-2008

Data Quality Reports for Session: 115561 User: sherman Completed: 11/07/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D040831.4	SGP/SIRS/E10 - Reprocess: Incorrect shortwave radiometer calibration coefficients	sgpsirsE10.00, sgpsirsE10.b1
D041206.1	SGP/SIRS/E10 - tracker failure	sgpsirs20sE10.a0, sgpsirsE10.00, sgpsirsE10.b1
D060309.1	SGP/SIRS/E1 - Reprocess: incorrect calibration coefficients for US (upwelling shortwave) instrument	sgpsirsE1.00, sgpsirsE1.b1
D060331.2	SGP/SIRS/E1 - Intermittantly missing downwelling diffuse	sgpsirs20sE1.a0, sgpsirsE1.00, sgpsirsE1.b1
D060630.18	SGP/SIRS/E10 - Reprocessed: Longwave Calibration error	sgpsirsE10.b1
D060630.9	SGP/SIRS/E1 - Reprocessed: Longwave Calibration error	sgpsirsE1.b1

DQRID : D040831.4

Start Date	Start Time	End Date	End Time
02/20/2004	1630	04/21/2004	1425

Subject:	SGP/SIRS/E10 - Reprocess: Incorrect shortwave radiometer calibration coefficients
DataStreams:	sgpsirsE10.00, sgpsirsE10.b1
Description:	During the pyrgeometer instrument (PIR) changeout a datalogger program was loaded with incorrect calibration coefficients for the shortwave instruments. The affected measurements (instruments) were: downwelling diffuse (8-48), upwelling shortwave (PSP), direct normal (NIP) and downwelling shortwave (PSP) Recalculate irradiances by determining original mV signal and reapplying the correct calibration coefficients. For SGP/SIRS/E10 and each one minute irradiance value perform the following calculations by instrument: DD(corrected) = (DD/107.24)114.63 US(corrected) = (US/113.19)117.46 NIP(corrected)= (NIP/120.17)119.26 DS(corrected) = (DS/118.46)122.78
Measurements:	sgpsirsE10.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Down-welling unshaded pyranometer voltage(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) sgpsirsE10.00: null(Raw data stream - documentation not supported)

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DQRID : D041206.1

Start Date	Start Time	End Date	End Time
11/04/2004	1800	01/26/2005	1600

Subject:	SGP/SIRS/E10 - tracker failure
DataStreams:	sgpsirs20sE10.a0, sgpsirsE10.00, sgpsirsE10.b1
Description:	During the night of 11/05-06 2004 the tracker failed at this location. During CM on 12/01, power cycling returned the tracker to service. However, tracker was not properly tracking in the AM. Tracker failed again sometime near 01/01/2005. CM on reloaded the tracker program and realigned the tracker on 01/26/2005 1600GMT. It has been working correctly since this time.
Measurements:	sgpsirsE10.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) sgpsirsE10.00: null(Raw data stream - documentation not supported) sgpsirs20sE10.a0: Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal)

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DQRID : D060309.1

Start Date	Start Time	End Date	End Time
02/21/2006	2008	03/07/2006	1950

Subject:	SGP/SIRS/E1 - Reprocess: incorrect calibration coefficients for US (upwelling shortwave) instrument
DataStreams:	sgpsirsE1.00, sgpsirsE1.b1
Description:	During the changeover from 4 to 1 coefficient for the PIRs at SIRS/E1 (PIF) the datalogger program was programmed with the wrong calibration coefficient and serial number for the US PSP instrument measuring the Upwelling Hemispheric Shortwave radiation. The calibration coefficient was 114.43 W/m2/mV (instrument 30618F3) when it should have been 104.47W/m2/mV (instrument 29618F3)
Measurements:	sgpsirsE1.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) sgpsirsE1.00: null(Raw data stream - documentation not supported)

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DQRID : D060331.2

Start Date	Start Time	End Date	End Time
10/26/2005	1630	04/04/2006	2005

Subject:	SGP/SIRS/E1 - Intermittantly missing downwelling diffuse
DataStreams:	sgpsirs20sE1.a0, sgpsirsE1.00, sgpsirsE1.b1
Description:	Starting on or about 10/26/2005 the downwelling diffuse hemispheric irradiance (Eppley 8-48) instrument had intermittant missing values. Technicians found a loose wire on the instrument connector and repaired it on 4/4/2006. Use global shortwave hemispheric (PSP) component - normal incident component (CosZA*NIP) to calulate diffuse component. Comparison of absolute difference between actual and computed diffuse component values and diffuse standard deviations > 1-2 W/m2 can help filter the noisy diffuse data. There is no standard method.
Measurements:	sgpsirs20sE1.a0: Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) sgpsirsE1.b1: Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) sgpsirsE1.00: null(Raw data stream - documentation not supported)

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DQRID : D060630.18

Start Date	Start Time	End Date	End Time
02/20/2004	1730	02/07/2006	2130

Subject:	SGP/SIRS/E10 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE10.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in February 2004. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in August 2006.
Measurements:	sgpsirsE10.b1: Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D060630.9

Start Date	Start Time	End Date	End Time
02/10/2004	2055	02/21/2006	2007

Subject:	SGP/SIRS/E1 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE1.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in February 2004. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006.
Measurements:	sgpsirsE1.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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