DQRs for Session: 104931 User:kcwangCompleted: 03-23-2007

Data Quality Reports for Session: 104931 User: kcwang Completed: 03/23/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D031124.8	SGP/SIRS/E7 - Unknown problem with downwelling shortwave instrument (Eppley PSP)	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
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
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
D040621.3	SGP/SIRS/E7 - Reprocessed: Corrected downwelling longwave calibrations	sgpsirsE7.00, 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
D050131.28	SGP/SIRS/E8 - Ice storm	sgpsirsE8.b1, sgpsirs20sE8.a0
D050218.1	SGP/SIRS/E7 - Reprocessed: Corrected Downwelling Longwave calibrations	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
D050307.3	SGP/SIRS/E7 - Downwelling Shortwave incorrect	sgpsirsE7.00, sgpsirsE7.b1
D050606.1	SGP/SIRS/E7 - Downwelling longwave incorrect	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
D050801.1	SGP/SIRS/E8 - Downwelling Shortwave hemispheric (PSP) Dome Contamination	sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE8.a0
D060523.1	SGP/SIRS/E8 - Instrument cable problem	sgpsirsE8.b1, sgpsirs20sE8.a0
D060630.15	SGP/SIRS/E7 - Reprocessed: Longwave Calibration error	sgpsirsE7.b1
D060630.16	SGP/SIRS/E8 - Reprocessed: Longwave Calibration error	sgpsirsE8.b1
D061208.1	SGP/SIRS/E7 - Instrument noise	sgpsirsE7.b1, sgpsirs20sE7.a0

DQRID : D031124.8

Start Date	Start Time	End Date	End Time
11/21/2003	0317	12/03/2003	0000

Subject:	SGP/SIRS/E7 - Unknown problem with downwelling shortwave instrument (Eppley PSP)
DataStreams:	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
Description:	Beginning around 0317 UTC, 11/21, downwelling shortwave values became anamolously high during the night, when they should have been around zero. Values returned to normal after SGP technicians reseated this instruments connections at 1215UTC 12/02/2003. The following day's data appeared normal. Appears that a poor connection was the culprit this time.
Measurements:	sgpsirs20sE7.a0: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) sgpsirsE7.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) sgpsirsE7.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

Back To Table of Contents

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:	sgpsirs20sE5.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) sgpsirsE2.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) sgpsirsE1.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirsE2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirs20sE3.a0: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) sgpsirsE3.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) sgpsirs20sE1.a0: Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) sgpsirsE8.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirsE3.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirsE5.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) sgpsirsE1.b1: Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) sgpsirsE5.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirs20sE2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) sgpsirs20sE8.a0: Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) sgpsirsE8.b1: 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) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)

Back To Table of Contents

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:	sgpsirsE8.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirs20sE8.a0: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) sgpsirsE8.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std)

Back To Table of Contents

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: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) sgpsirsE7.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)

Back To Table of Contents

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:	sgpsirsE7.00, 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 Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)

Back To Table of Contents

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: Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) sgpsirsE7.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

Back To Table of Contents

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:	sgpsirsE8.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirsE8.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated 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) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)

Back To Table of Contents

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:	sgpsirs20sE8.a0: Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_dome_resist) north latitude for all the input platforms.(lat) altitude above sea levelaltunits(alt) Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile Voltage(inst_up_short_hemisp) Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp) Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) Time offset of tweaks from base_time(time_offset) Time offset from base_time(base_time) east longitude for all the input platforms.(lon) Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_case_resist) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) sgpsirsE8.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp) Time offset from base_time(base_time) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) east longitude for all the input platforms.(lon) Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(up_long_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(up_long_hemisp_max) north latitude for all the input platforms.(lat) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) altitude above sea levelaltunits(alt) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Battery voltage(vBatt) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Time offset of tweaks from base_time(time_offset) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(up_long_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)

Back To Table of Contents

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:	sgpsirsE7.00, sgpsirsE7.b1, sgpsirs20sE7.a0
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 Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp)

Back To Table of Contents

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: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) sgpsirsE7.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

Back To Table of Contents

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: Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_dome_resist) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_case_resist) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) sgpsirsE7.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp) sgpsirsE7.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

Back To Table of Contents

DQRID : D050801.1

Start Date	Start Time	End Date	End Time
07/27/2005	1930	08/09/2005	1940

Subject:	SGP/SIRS/E8 - Downwelling Shortwave hemispheric (PSP) Dome Contamination
DataStreams:	sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE8.a0
Description:	The downelling shortwave hemispheric instrument (Eppley PSP) dome at this site had dirt or a smudge on it. This was most noticeable during mid to late afternoon hours (around 2100 GMT). PM cleaned the dome on 8/9/05 1940, correcting the problem.
Measurements:	sgpsirsE8.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirs20sE8.a0: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) sgpsirsE8.b1: Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std)

Back To Table of Contents

DQRID : D060523.1

Start Date	Start Time	End Date	End Time
05/22/2006	1300	05/30/2006	2020

Subject:	SGP/SIRS/E8 - Instrument cable problem
DataStreams:	sgpsirsE8.b1, sgpsirs20sE8.a0
Description:	The short_direct_normal, down_short_diffuse_hemisp and up_short_hemisp data are missing or are spiking to negative numbers. On 20060530, technicians discovered cows had chewed on the instrument cables.
Measurements:	sgpsirs20sE8.a0: Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile Voltage(inst_up_short_hemisp) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) sgpsirsE8.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated 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) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)

Back To Table of Contents

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 Net Infrared(down_long_netir) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

Back To Table of Contents

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: Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

Back To Table of Contents

DQRID : D061208.1

Start Date	Start Time	End Date	End Time
10/31/2006	0600	12/12/2006	2105

Subject:	SGP/SIRS/E7 - Instrument noise
DataStreams:	sgpsirsE7.b1, sgpsirs20sE7.a0
Description:	Beginning around 10/31, the E7 UIR experienced an increasingly noisy signal. The thermopile signal was noisy, but case and dome thermistors are well behaved. Maintenance reseated the UIR cable connections on 12/12/2006 which effectively eliminated the UIR noise. The thermopile data from the upwelling pyrgeometer is noisy with resulting irradiance variations of up to 5 W/m2, but doesn't appear to have a bias.
Measurements:	sgpsirs20sE7.a0: Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp) Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist) Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist) sgpsirsE7.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(up_long_hemisp_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(up_long_hemisp_min) Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp) Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

Back To Table of Contents

END OF DATA