DQRs for Session: 135005 User:anderbergCompleted: 05-20-2011

Data Quality Reports for Session: 135005 User: anderberg Completed: 05/20/2011

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D040205.1	SGP/SIRS/E1/E2/E3/E5/E8 - Snow on Radiometers	sgpsirsE1.00, sgpsirsE1.b1, sgpsirsE2.00, sgpsirsE2.b1, sgpsirsE3.00, sgpsirsE3.b1, sgpsirsE5.00, sgpsirsE5.b1, sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE1.a0, sgpsirs20sE2.a0, sgpsirs20sE3.a0, sgpsirs20sE5.a0, sgpsirs20sE8.a0
D040226.1	SGP/SIRS/E9 - PSP dome contamination	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
D040320.1	SGP/SIRS/E5 - anomalously low NIP readings	sgpsirsE5.00, sgpsirsE5.b1, sgpsirs20sE5.a0
D040320.2	SGP/SIRS/E8 - Possible Contamination of DS PSP instrument	sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE8.a0
D040405.2	SGP/SIRS/E7 - PSP dome contamination	sgpsirsE7.b1, sgpsirs20sE7.a0
D040420.2	SGP/SIRS/E5 - Dirt on PSP Dome	sgpsirsE5.00, sgpsirsE5.b1, sgpsirs20sE5.a0
D040621.3	SGP/SIRS/E7 - Reprocessed: Corrected downwelling longwave calibrations	sgpsirsE7.b1
D040831.2	SGP/SIRS/E7 - Reprocess: Incorrect shortwave radiometer calibration coefficients	sgpsirsE7.00, sgpsirsE7.b1
D040831.3	SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficients	sgpsirsE8.00, sgpsirsE8.b1
D050117.1	SGP/SIRS/E9 - Unknown -failed PSP ventilator fan	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
D050131.26	SGP/SIRS/E5 - Ice storm	sgpsirsE5.b1, sgpsirs20sE5.a0
D050131.27	SGP/SIRS/E6 - Ice storm	sgpsirsE6.b1, sgpsirs20sE6.a0
D050131.28	SGP/SIRS/E8 - Ice storm	sgpsirsE8.b1, sgpsirs20sE8.a0
D050131.29	SGP/SIRS/E9 - Ice storm	sgpsirsE9.b1, sgpsirs20sE9.a0
D050205.2	SGP/SIRS/E6 - Questionable data due to Ice Storm damage	sgpsirsE6.00, sgpsirsE6.b1, sgpsirs20sE6.a0
D050218.1	SGP/SIRS/E7 - Reprocessed: Corrected Downwelling Longwave calibrations	sgpsirsE7.b1
D050307.3	SGP/SIRS/E7 - Downwelling Shortwave incorrect	sgpsirsE7.00, sgpsirsE7.b1
D050414.2	SGP/SIRS/E9 - Downwelling Shortwave values low	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
D050606.1	SGP/SIRS/E7 - Downwelling longwave incorrect	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
D050621.1	SGP/SIRS/E9 - Sensor cable failure	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
D060630.11	SGP/SIRS/E3 - Reprocessed: Longwave Calibration error	sgpsirsE3.b1
D060630.12	SGP/SIRS/E4 - Reprocessed: Longwave Calibration error	sgpsirsE4.b1
D060630.13	SGP/SIRS/E5 - Reprocessed: Longwave Calibration error	sgpsirsE5.b1
D060630.14	SGP/SIRS/E6 - Reprocessed: Longwave Calibration error	sgpsirsE6.b1
D060630.15	SGP/SIRS/E7 - Reprocessed: Longwave Calibration error	sgpsirsE7.b1
D060630.16	SGP/SIRS/E8 - Reprocessed: Longwave Calibration error	sgpsirsE8.b1
D060630.17	SGP/SIRS/E9 - Reprocessed: Longwave Calibration error	sgpsirsE9.b1

DQRID : D040205.1

Start Date	Start Time	End Date	End Time
02/02/2004	1200	02/02/2004	2000

Subject:	SGP/SIRS/E1/E2/E3/E5/E8 - Snow on Radiometers
DataStreams:	sgpsirsE1.00, sgpsirsE1.b1, sgpsirsE2.00, sgpsirsE2.b1, sgpsirsE3.00, sgpsirsE3.b1, sgpsirsE5.00, sgpsirsE5.b1, sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE1.a0, sgpsirs20sE2.a0, sgpsirs20sE3.a0, sgpsirs20sE5.a0, sgpsirs20sE8.a0
Description:	A large discrepancy between the measured values of downwelling hemispheric shortwave radiation and the derived values occurred on 2/02 at the listed sites. The difference is on the order of 200 Wm^(-2) at E2 and to a lesser extent at the other affected stations. This problem most likely resulted from a previous day or night snow/ice accumulation on the Direct(NIP), Downwelling Sortwave(PSP) and/or Downwelling Diffuse(8-48) instruments. During the morning hours of 02/02, Approx 1300-2000GMT, snow/ice was covering one or more of these three instruments resulting in faulty readings and incorrect derived downwelling shortwave values as well. Instrument readings indicate the problem resolved itself later in the day through normal meltoff.
Measurements:	sgpsirs20sE3.a0: inst_diffuse inst_direct_normal inst_global sgpsirsE3.00: Raw data stream - documentation not supported sgpsirs20sE5.a0: inst_global inst_direct_normal inst_diffuse sgpsirs20sE1.a0: inst_global inst_direct_normal inst_diffuse sgpsirsE1.b1: down_short_hemisp_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) down_short_diffuse_hemisp_std Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) short_direct_normal_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) sgpsirs20sE8.a0: inst_direct_normal inst_diffuse inst_global sgpsirsE2.b1: down_short_hemisp_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_short_diffuse_hemisp_std Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) short_direct_normal_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) sgpsirsE1.00: Raw data stream - documentation not supported sgpsirsE8.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_diffuse_hemisp_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) short_direct_normal_std down_short_hemisp_std Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) sgpsirs20sE2.a0: inst_direct_normal inst_diffuse inst_global sgpsirsE8.00: Raw data stream - documentation not supported sgpsirsE3.b1: Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_short_diffuse_hemisp_std down_short_hemisp_std short_direct_normal_std Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) sgpsirsE5.b1: down_short_hemisp_std short_direct_normal_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_diffuse_hemisp_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) sgpsirsE2.00: Raw data stream - documentation not supported sgpsirsE5.00: Raw data stream - documentation not supported

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DQRID : D040226.1

Start Date	Start Time	End Date	End Time
02/20/2004	1600	02/23/2004	0500

Subject:	SGP/SIRS/E9 - PSP dome contamination
DataStreams:	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
Description:	Measured values of diffuse shortwave downwelling radiation fluctuated below derived values of downwelling shortwave radiation by 50 W/m^2 during the afternoon hours under clear conditions. SMOS precipitation and wind speed data reveals rain and wind the night before on 02/20/03 0100 GMT probably contaminated the PSP dome with dirt. Precipitation of .25mm on 02/23/04 0300 seems to have effectively cleared the PSP dome since PSP data on 02/24/04 compares correctly to direct and diffuse components.
Measurements:	sgpsirs20sE9.a0: inst_global sgpsirsE9.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) down_short_hemisp_std sgpsirsE9.00: Raw data stream - documentation not supported

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DQRID : D040320.1

Start Date	Start Time	End Date	End Time
03/17/2004	1843	03/28/2004	0300

Subject:	SGP/SIRS/E5 - anomalously low NIP readings
DataStreams:	sgpsirsE5.00, sgpsirsE5.b1, sgpsirs20sE5.a0
Description:	Direct normal (NIP instrument) irradiance readings fall anomalously on 3/17 18:43GMT to less than half the expected values during clear sky conditions. NIP readings returned to normal on 3/28/04 12:00. Maintenance on 3/29/04 19:48 revealed no unusual contaminents. Precipitation on 3/27 (measured by the SMOS system) probably cleared the NIP window of contaminents before scheduled maintenance.
Measurements:	sgpsirs20sE5.a0: inst_direct_normal sgpsirsE5.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) short_direct_normal_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) sgpsirsE5.00: Raw data stream - documentation not supported

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DQRID : D040320.2

Start Date	Start Time	End Date	End Time
03/15/2004	1500	03/31/2004	1200

Subject:	SGP/SIRS/E8 - Possible Contamination of DS PSP instrument
DataStreams:	sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE8.a0
Description:	Downwelling hemispheric shortwave values drop at about 1500 GMT under clear sky conditions, typically from about 14:00GMT to 16:00GMT. This may be due to a dirty PSP but maintenance on 03/23/04 18:11 GMT revealed no more than typical light dust. The problem was essentially undetectable by 03/31/04 12:00. The time of day that the problem exists appears to be an exagerated PSP cosine response. No obvious reason presents why the problem appeared and then disappeared within this two week period.
Measurements:	sgpsirsE8.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) down_short_hemisp_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) sgpsirsE8.00: Raw data stream - documentation not supported sgpsirs20sE8.a0: inst_global

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DQRID : D040405.2

Start Date	Start Time	End Date	End Time
03/30/2004	1430	04/06/2004	2100

Subject:	SGP/SIRS/E7 - PSP dome contamination
DataStreams:	sgpsirsE7.b1, sgpsirs20sE7.a0
Description:	Values of hemispheric downwelling shortwave radiation differed from derived values by 45 W/m^2 on 03/30 around 1430 GMT under clear sky conditions due to dirt on the dome. Maintenance reported cleaning heavy dust from dome on 04/06 2030 GMT.
Measurements:	sgpsirs20sE7.a0: inst_global sgpsirsE7.b1: Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_hemisp_std

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DQRID : D040420.2

Start Date	Start Time	End Date	End Time
04/11/2004	1200	05/05/2004	1645

Subject:	SGP/SIRS/E5 - Dirt on PSP Dome
DataStreams:	sgpsirsE5.00, sgpsirsE5.b1, sgpsirs20sE5.a0
Description:	The PSP dome was dirty. The magnitude of differences from derived vs. measured values of downwelling shortwave were about 75 W/m^2. Preventative maintenance on 4/21 cleaned instruments but they became dirty again immediately afterward and continued to be so until the next PM on 5/5.
Measurements:	sgpsirs20sE5.a0: inst_global inst_direct_normal sgpsirsE5.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_hemisp_std Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) short_direct_normal_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) sgpsirsE5.00: Raw data stream - documentation not supported

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DQRID : D040621.3

Start Date	Start Time	End Date	End Time
04/20/2004	1825	06/29/2004	1915

Subject:	SGP/SIRS/E7 - Reprocessed: Corrected downwelling longwave calibrations
DataStreams:	sgpsirsE7.b1
Description:	While attempting to correct calibration coefficients (see D040831.2) a new datalogger program was loaded which applied the wrong serial number and calibration coefficients to the downwelling longwave measurement. The data were reprocessed in September 2006 with the correct downwelling longwave calibrations and archived on 20061003.
Measurements:	sgpsirsE7.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) down_long_hemisp_shaded_std Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D040831.2

Start Date	Start Time	End Date	End Time
02/20/2004	1845	04/20/2004	1825

Subject:	SGP/SIRS/E7 - Reprocess: Incorrect shortwave radiometer calibration coefficients
DataStreams:	sgpsirsE7.00, sgpsirsE7.b1
Description:	During the pyrgeometer instrument (PIR) changout 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 each one minute irradiance value perform the following calculations by instrument: DD(corrected) = (DD/107.24)108.50 US(corrected) = (US/113.19)110.10 NIP(corrected)= (NIP/120.17)122.26 DS(corrected) = (DS/118.46)122.56
Measurements:	sgpsirsE7.b1: Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) short_direct_normal_std down_short_hemisp_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) down_short_diffuse_hemisp_std up_short_hemisp_std sgpsirsE7.00: Raw data stream - documentation not supported

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DQRID : D040831.3

Start Date	Start Time	End Date	End Time
02/10/2004	1825	04/20/2004	1825

Subject:	SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficients
DataStreams:	sgpsirsE8.00, sgpsirsE8.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 each one minute irradiance value perform the following calculations by instrument: DD(corrected) = (DD/107.24)116.37 US(corrected) = (US/113.19)121.78 NIP(corrected)= (NIP/120.17)122.47 DS(corrected) = (DS/118.46)122.34
Measurements:	sgpsirsE8.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_hemisp_std Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) short_direct_normal_std Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) down_short_diffuse_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) sgpsirsE8.00: Raw data stream - documentation not supported

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DQRID : D050117.1

Start Date	Start Time	End Date	End Time
12/23/2004	2315	01/25/2005	1800

Subject:	SGP/SIRS/E9 - Unknown -failed PSP ventilator fan
DataStreams:	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
Description:	Downwelling shortwave hemispheric (DSH) readings appear to have a slight to moderate negative offset from derived DSH values. At night, this negative offset causes qc flags (since values are below the minimum threshold of -10 W/m^2). Differences between derived and actual DSH values are sometimes on the order of 50 W/m^2 due to this offset. The offset was discovered to be due to a failed ventilator fan which is used to clear the dome of the PSP, the instrument which measures the DSH. The ventilator likely seized or was intermittent and heated the PSP base giving an erroneous DSH reading. Field techs replaced the fan on 01/25/2005 1745GMT. The DSH has been reading normally since that time.
Measurements:	sgpsirs20sE9.a0: inst_global sgpsirsE9.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) down_short_hemisp_std sgpsirsE9.00: Raw data stream - documentation not supported

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DQRID : D050131.26

Start Date	Start Time	End Date	End Time
01/04/2005	2202	01/12/2005	2002

Subject:	SGP/SIRS/E5 - Ice storm
DataStreams:	sgpsirsE5.b1, sgpsirs20sE5.a0
Description:	Data missing due to ice storm.
Measurements:	sgpsirs20sE5.a0: Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) inst_up_long_case_resist alt inst_global base_time inst_direct_normal lat inst_up_long_hemisp_tp inst_down_long_shaded_dome_resist inst_up_short_hemisp inst_down_long_shaded_case_resist time_offset inst_diffuse lon inst_up_long_dome_resist sgpsirsE5.b1: Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) down_short_hemisp_std up_long_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) short_direct_normal_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) vBatt Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) time_offset Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_long_hemisp_shaded_std down_short_diffuse_hemisp_std Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) inst_up_long_dome_temp Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) up_short_hemisp_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) lon inst_down_long_shaded_case_temp Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) inst_down_long_shaded_dome_temp base_time lat Upwelling Longwave Hemispheric Net Infrared(up_long_netir) inst_up_long_case_temp alt

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DQRID : D050131.27

Start Date	Start Time	End Date	End Time
01/05/2005	0202	01/09/2005	1630

Subject:	SGP/SIRS/E6 - Ice storm
DataStreams:	sgpsirsE6.b1, sgpsirs20sE6.a0
Description:	Data missing due to ice storm.
Measurements:	sgpsirsE6.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) down_short_diffuse_hemisp_std short_direct_normal_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) inst_down_long_shaded_dome_temp Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) inst_up_long_dome_temp Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) alt vBatt down_long_hemisp_shaded_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) base_time time_offset up_short_hemisp_std Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) lon Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) down_short_hemisp_std inst_down_long_shaded_case_temp Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) up_long_hemisp_std inst_up_long_case_temp Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) lat sgpsirs20sE6.a0: inst_direct_normal lat inst_down_long_shaded_dome_resist inst_up_long_dome_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) inst_up_long_hemisp_tp inst_up_short_hemisp inst_down_long_shaded_case_resist alt inst_global inst_up_long_case_resist inst_diffuse time_offset base_time lon

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DQRID : D050131.28

Start Date	Start Time	End Date	End Time
01/04/2005	2102	01/11/2005	1943

Subject:	SGP/SIRS/E8 - Ice storm
DataStreams:	sgpsirsE8.b1, sgpsirs20sE8.a0
Description:	Data missing due to ice storm.
Measurements:	sgpsirsE8.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) time_offset vBatt down_short_diffuse_hemisp_std Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) inst_up_long_dome_temp Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) inst_up_long_case_temp Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) short_direct_normal_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) base_time inst_down_long_shaded_case_temp down_long_hemisp_shaded_std up_long_hemisp_std lat down_short_hemisp_std Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) lon Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) up_short_hemisp_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) alt Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) inst_down_long_shaded_dome_temp Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) sgpsirs20sE8.a0: inst_up_short_hemisp inst_up_long_case_resist inst_down_long_shaded_case_resist inst_direct_normal lon alt base_time inst_diffuse inst_up_long_dome_resist time_offset inst_global inst_down_long_shaded_dome_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) lat inst_up_long_hemisp_tp

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DQRID : D050131.29

Start Date	Start Time	End Date	End Time
01/05/2005	0702	01/09/2005	1448

Subject:	SGP/SIRS/E9 - Ice storm
DataStreams:	sgpsirsE9.b1, sgpsirs20sE9.a0
Description:	Data missing due to ice storm.
Measurements:	sgpsirs20sE9.a0: base_time alt inst_diffuse lat inst_up_long_dome_resist lon inst_up_long_case_resist inst_up_long_hemisp_tp inst_direct_normal Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) inst_up_short_hemisp inst_global time_offset inst_down_long_shaded_dome_resist inst_down_long_shaded_case_resist sgpsirsE9.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) inst_down_long_shaded_case_temp Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) inst_down_long_shaded_dome_temp Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) time_offset inst_up_long_dome_temp vBatt Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) short_direct_normal_std Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) base_time Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) alt Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) down_long_hemisp_shaded_std inst_up_long_case_temp Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) up_long_hemisp_std lon down_short_hemisp_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) lat Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) down_short_diffuse_hemisp_std

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DQRID : D050205.2

Start Date	Start Time	End Date	End Time
01/13/2005	1200	02/10/2005	1700

Subject:	SGP/SIRS/E6 - Questionable data due to Ice Storm damage
DataStreams:	sgpsirsE6.00, sgpsirsE6.b1, sgpsirs20sE6.a0
Description:	Several SIRS readings at E6 readings have appeared questionable since the ice storm in early January. Starting on 01/13 maintenance found the E6 tracker inoperative. It was reset and put back into serivice. Shortly after, on 01/16 data from the DSH instrument (PSP) became questionable possibly due to obstructed or failed ventilator fan. On 02/10 1645 GMT maintenance found the DSH instrument ventilator fan failed - the fan was replaced, the E6 tracker was also realigned. Due to early january ice storms, the tracker alignment issues and a failed ventilator fan - All tracker mounted and global DS instrument measurements are suspect for this time frame.
Measurements:	sgpsirsE6.00: Raw data stream - documentation not supported sgpsirsE6.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) down_short_diffuse_hemisp_std short_direct_normal_std Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) down_short_hemisp_std inst_down_long_shaded_dome_temp inst_down_long_shaded_case_temp Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) down_long_hemisp_shaded_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) sgpsirs20sE6.a0: inst_direct_normal inst_down_long_shaded_dome_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) inst_diffuse inst_down_long_shaded_case_resist inst_global

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DQRID : D050218.1

Start Date	Start Time	End Date	End Time
11/02/2004	2045	02/22/2005	2050

Subject:	SGP/SIRS/E7 - Reprocessed: Corrected Downwelling Longwave calibrations
DataStreams:	sgpsirsE7.b1
Description:	Incorrect DIR calibration coeffs and serial numbers were applied to the data from 11/02/2004 when the shortwave instruments were changed out. Field techs corrected the program during longwave instrument replacement on 2/22/2005. The data were reprocessed in September 2006 to apply the correct calibrations. The reprocessed data were archived in October 2006.
Measurements:	sgpsirsE7.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) down_long_hemisp_shaded_std inst_down_long_shaded_dome_temp Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) inst_down_long_shaded_case_temp Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D050307.3

Start Date	Start Time	End Date	End Time
03/03/2005	2200	04/05/2005	1950

Subject:	SGP/SIRS/E7 - Downwelling Shortwave incorrect
DataStreams:	sgpsirsE7.00, sgpsirsE7.b1
Description:	Downwelling shortwave values dropped off to unrealistic values frequently at this site (usually between 1600 GMT and 0000 GMT). SGP techs found this was due to a bad multiplexer and it was replaced 04/05/2005 1950GMT along with the downwelling shortwave cable.
Measurements:	sgpsirsE7.b1: Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_hemisp_std sgpsirsE7.00: Raw data stream - documentation not supported

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DQRID : D050414.2

Start Date	Start Time	End Date	End Time
03/30/2005	0103	04/19/2005	1720

Subject:	SGP/SIRS/E9 - Downwelling Shortwave values low
DataStreams:	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
Description:	Downwelling Shortwave Hemispheric (DSH) irradiance values from the pyranometer instrument were frequently below the MIN value of -10 W/m^2 at night. DSH values also frequently disagreed with derived readings (at times well over 50 W/m^2 difference) during the daylight hours, especially in the morning. Field techs performed maintenance but could not find obvious instrument or connection problems. The low DSH values during nighttime were on the threshold of acceptable. Largest offsets acceptable with these pyranometers is typically -10 W/m2. The large derived vs. actual DSH differences during the daylight hours are the subject of ongoing ARM investigation. No instrument problems could be identified.
Measurements:	sgpsirs20sE9.a0: inst_global sgpsirsE9.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) down_short_hemisp_std sgpsirsE9.00: Raw data stream - documentation not supported

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DQRID : D050606.1

Start Date	Start Time	End Date	End Time
04/05/2005	1950	04/19/2005	2100

Subject:	SGP/SIRS/E7 - Downwelling longwave incorrect
DataStreams:	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
Description:	During maintenance to correct a problem with the downwelling shortwave data, the downwelling longwave instrument wiring was not properly fastened resulting in incorrect downwelling longwave hemispheric data.
Measurements:	sgpsirs20sE7.a0: inst_down_long_shaded_dome_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) inst_down_long_shaded_case_resist sgpsirsE7.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) down_long_hemisp_shaded_std inst_down_long_shaded_dome_temp Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) inst_down_long_shaded_case_temp Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) sgpsirsE7.00: Raw data stream - documentation not supported

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DQRID : D050621.1

Start Date	Start Time	End Date	End Time
06/13/2005	2115	06/20/2005	2200

Subject:	SGP/SIRS/E9 - Sensor cable failure
DataStreams:	sgpsirsE9.00, sgpsirsE9.b1, sgpsirs20sE9.a0
Description:	The short_direct_normal measurements from the normal incident pyrheliometer (NIP) instrument were missing beginning 6/13/2005 2115GMT. On 6/20/2005 technicians found the NIP instrument cable broken, replaced it, and returned the instrument to service at 2200GMT.
Measurements:	sgpsirs20sE9.a0: inst_direct_normal sgpsirsE9.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) short_direct_normal_std Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) sgpsirsE9.00: Raw data stream - documentation not supported

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DQRID : D060630.11

Start Date	Start Time	End Date	End Time
03/10/2004	1715	02/08/2006	1730

Subject:	SGP/SIRS/E3 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE3.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in March 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:	sgpsirsE3.b1: Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)

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DQRID : D060630.12

Start Date	Start Time	End Date	End Time
03/10/2004	1720	02/22/2006	1615

Subject:	SGP/SIRS/E4 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE4.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in March 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:	sgpsirsE4.b1: Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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DQRID : D060630.13

Start Date	Start Time	End Date	End Time
03/10/2004	2030	02/22/2006	1817

Subject:	SGP/SIRS/E5 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE5.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in March 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:	sgpsirsE5.b1: Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D060630.14

Start Date	Start Time	End Date	End Time
03/11/2004	1610	02/09/2006	1553

Subject:	SGP/SIRS/E6 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE6.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in March 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:	sgpsirsE6.b1: Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)

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DQRID : D060630.15

Start Date	Start Time	End Date	End Time
02/20/2004	2000	02/07/2006	2005

Subject:	SGP/SIRS/E7 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE7.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:	sgpsirsE7.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D060630.16

Start Date	Start Time	End Date	End Time
02/10/2004	1845	02/21/2006	1840

Subject:	SGP/SIRS/E8 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE8.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 instanteous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in September 2006.
Measurements:	sgpsirsE8.b1: Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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DQRID : D060630.17

Start Date	Start Time	End Date	End Time
12/17/2003	1640	02/07/2006	1730

Subject:	SGP/SIRS/E9 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE9.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in December 2003. 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 instanteous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006.
Measurements:	sgpsirsE9.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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