DQRs for Session: 105085 User:kcwangCompleted: 04-09-2007

Data Quality Reports for Session: 105085 User: kcwang Completed: 04/09/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D030917.19	SGP/SIRS/E2 - Missing data due to Ice storm and clock problems	sgpsirsE2.00, sgpsirsE2.a2, sgpsirsE2.b1, sgpsirs20sE2.a0, sgpsirs60sE2.a1, sgp1swfanalsirs1longE2.c1, sgp15swfanalsirs1longE2.c1
D030922.5	SGP/SIRS/E2 - Ventilator Fan Failure	sgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.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
D040227.3	SGP/SIRS/E2 - Reprocess: Incorrect shortwave radiometer calibration coefficients	sgpsirsE2.00, sgpsirsE2.b1
D050131.25	SGP/SIRS/E2 - Ice storm	sgpsirsE2.b1, sgpsirs20sE2.a0
D050205.3	SGP/SIRS/E2 - Tracker mis-alignment	sgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
D050303.1	SGP/SIRS/E2 - Reprocessed: Incorrect DIR calibration coefficients	sgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
D060630.10	SGP/SIRS/E2 - Reprocessed: Longwave Calibration error	sgpsirsE2.b1

DQRID : D030917.19

Start Date	Start Time	End Date	End Time
03/09/2002	2104	03/10/2002	2004
03/13/2002	1805	03/14/2002	1605

Subject:	SGP/SIRS/E2 - Missing data due to Ice storm and clock problems
DataStreams:	sgpsirsE2.00, sgpsirsE2.a2, sgpsirsE2.b1, sgpsirs20sE2.a0, sgpsirs60sE2.a1, sgp1swfanalsirs1longE2.c1, sgp15swfanalsirs1longE2.c1
Description:	Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems.
Measurements:	sgp15swfanalsirs1longE2.c1: Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z) Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured) Measured Downwelling Summed Shortwave Irradiance (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured) Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit) Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit) Estimated Average Fractional Sky Cover over the Hemispheric Dome (cf)(cloudfraction) altitude above sea levelaltunits(alt) Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured) Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured) Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured) north latitude for all the input platforms.(lat) Time offset of tweaks from base_time(time_offset) Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit) Number of 1-minute Cloud Fraction Estimates in the 15-minute Interval (Ncf)(nsamples_cloudfraction) Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured) Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect) Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit) Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured) Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect) Time offset from base_time(base_time) Time Offset from base_time_LST(time_offset_LST) Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance) Number of 1-minute Clear-sky Detections in the 15-minute Interval (Nclr)(nsamples_clearsky_detection) Site Identification(site) Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit) Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit) Number of 1-minute Measured Downwelling Summed Shortwave Irradiances in the 15-minute Interval (Nssw)(nsamples_sswfluxdn_measured) Ratio of Measured minus Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (di(difcloudeffect_normalized) Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements (calb)(albedosw_clearskyfit) east longitude for all the input platforms.(lon) Number of 1-minute Clear-sky Fit Downwelling Global Shortwave Irradiance Estimates in the 15-minute Interval (Ncsw)(nsamples_gswfluxdn_clearskyfit) Average over the interval of the standard deviation of difratiodn_measured computed using a 3-5 sample window centered at each 1-min sample(difratiodn_measured_stdev) Beginning Time of File (LST)(base_time_LST) Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect) sgpsirs60sE2.a1: Battery voltage(vBatt) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) 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) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Time offset of tweaks from base_time(time_offset) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(up_long_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Time offset from base_time(base_time) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) altitude above sea levelaltunits(alt) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(up_long_hemisp_min) north latitude for all the input platforms.(lat) east longitude for all the input platforms.(lon) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) sgpsirsE2.b1: Battery voltage(vBatt) east longitude for all the input platforms.(lon) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) altitude above sea levelaltunits(alt) Time offset of tweaks from base_time(time_offset) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_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) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(up_long_hemisp_std) Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(up_long_hemisp_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) Time offset from base_time(base_time) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) north latitude for all the input platforms.(lat) sgpsirsE2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirs20sE2.a0: Time offset from base_time(base_time) east longitude for all the input platforms.(lon) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_case_resist) Time offset of tweaks from base_time(time_offset) Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile Voltage(inst_up_short_hemisp) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_dome_resist) altitude above sea levelaltunits(alt) Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp) north latitude for all the input platforms.(lat) sgp1swfanalsirs1longE2.c1: Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured) Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect) Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect) Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit) north latitude for all the input platforms.(lat) Clear-sky Offset Coefficient c for Global minus Summed Shortwave Irradiance Difference (SCORc)(coef_clearsky_dsw_c) Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit) Clear-sky Fit Coefficient b to Summed Shortwave Irradiance (CSWb)(coef_clearsky_ssw_b) Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured) altitude above sea levelaltunits(alt) Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit) Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured) Clear-sky Fit Coefficient b to Global UVB Irradiance (UVBb)(coef_clearsky_guvb_b) Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance) Clear-sky Fit Coefficient a to Global UVB Irradiance (UVBa)(coef_clearsky_guvb_a) Time Offset from base_time_LST(time_offset_LST) Clear-sky Fit Coefficient a to Summed Shortwave Irradiance (CSWa)(coef_clearsky_ssw_a) Time offset of tweaks from base_time(time_offset) Clear-sky Fit Coefficient a to Albedo (Alba)(coef_clearsky_albedo_a) Measured Downwelling Summed Shortwave Irradiance (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured) Clear-sky Fit Coefficient b to Global Shortwave Irradiance (CSWb)(coef_clearsky_gsw_b) Clear-sky Fit Coefficient b to Diffuse Irradiance to Total Irradiance Ratio (DFRb)(coef_clearsky_difratio_b) Clear-sky Fit Coefficient a to Diffuse Irradiance to Total Irradiance Ratio (DFRa)(coef_clearsky_difratio_a) Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit) Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z) Clear-sky Detection Flag (clrf)(flag_clearsky_detection) Clear-sky Fit Coefficient b to Albedo (Albb)(coef_clearsky_albedo_b) Beginning Time of File (LST)(base_time_LST) Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit) Clear-sky Fit Coefficient a to Global Shortwave Irradiance (CSWa)(coef_clearsky_gsw_a) Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect) Clear-sky Fit Coefficient a to Global minus Summed Shortwave Irradiance Difference (SCORa)(coef_clearsky_dsw_a) Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured) Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit) Clear-sky Fit Coefficient b to Global minus Summed Shortwave Irradiance Difference (SCORb)(coef_clearsky_dsw_b) Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured) Site Identification(site) east longitude for all the input platforms.(lon) Date (YYMMDD LST) for which the Coefficients are Applicable(coef_date) Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured) Time offset from base_time(base_time) Daily Averaged Distance from the Earth to the Sun (auavg)(sun_earth_distance_dailyaverage) Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements (calb)(albedosw_clearskyfit) sgpsirsE2.a2: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) north latitude for all the input platforms.(lat) Time offset of tweaks from base_time(time_offset) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(up_long_hemisp_max) Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(up_long_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Time offset from base_time(base_time) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp) Battery voltage(vBatt) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) altitude above sea levelaltunits(alt) east longitude for all the input platforms.(lon) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)

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DQRID : D030922.5

Start Date	Start Time	End Date	End Time
09/14/2003	1000	09/25/2003	1543

Subject:	SGP/SIRS/E2 - Ventilator Fan Failure
DataStreams:	sgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
Description:	Measured downwelling shortwave data was very questionable, reporting nighttime values as low as -50 W/m^2, while differing from calculated downwelling shortwave by as much as 50 W/m^2 lower during the day. The first indication of a problem was around 10 UTC, 9/14, when measured DS values suddenly dropped below 10 W/m^2 for about a 2 hour period before sunrise, then were consistently lower than calculated DS by as much as 40 W/m^2 during the day. The problem got progressively worse with time until the ventilator fan was replace on 9/25. Ventilator fan failure changed the fundamental operating characteristics of this PSP and resulted in unpredictable biased measurements which cannot be corrected without additional empirical characterization of the radiometer in question.
Measurements:	sgpsirsE2.b1: 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) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) sgpsirs20sE2.a0: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) sgpsirsE2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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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)

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DQRID : D040227.3

Start Date	Start Time	End Date	End Time
02/12/2004	1612	03/25/2004	1600

Subject:	SGP/SIRS/E2 - Reprocess: Incorrect shortwave radiometer calibration coefficients
DataStreams:	sgpsirsE2.00, sgpsirsE2.b1
Description:	During the pyrgeometer instrument (PIR) changout a datalogger program was loaded with incorrect calibration coefficients for the shortwave instruments. The affected measurements were : downwelling diffuse (DD), upwelling shortwave(US), direct normal (NIP) and downwelling shortwave(DS) 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)118.11 US(corrected) = (US/113.19)118.21 NIP(corrected)= (NIP/120.17)119.08 DS(corrected) = (DS/118.46)117.33
Measurements:	sgpsirsE2.b1: Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) 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, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) sgpsirsE2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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DQRID : D050131.25

Start Date	Start Time	End Date	End Time
01/05/2005	0902	01/13/2005	1618

Subject:	SGP/SIRS/E2 - Ice storm
DataStreams:	sgpsirsE2.b1, sgpsirs20sE2.a0
Description:	Data missing due to ice storm.
Measurements:	sgpsirsE2.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(up_short_hemisp_max) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(up_short_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(up_long_hemisp_std) Battery voltage(vBatt) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp) Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) east longitude for all the input platforms.(lon) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(up_short_hemisp_min) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(up_long_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) altitude above sea levelaltunits(alt) 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) north latitude for all the input platforms.(lat) Time offset from base_time(base_time) Time offset of tweaks from base_time(time_offset) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(up_long_hemisp_max) sgpsirs20sE2.a0: Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_case_resist) Time offset of tweaks from base_time(time_offset) Time offset from base_time(base_time) Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile Voltage(inst_up_short_hemisp) Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_dome_resist) Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) north latitude for all the input platforms.(lat) east longitude for all the input platforms.(lon) altitude above sea levelaltunits(alt)

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DQRID : D050205.3

Start Date	Start Time	End Date	End Time
02/03/2005	1654	02/05/2005	2359

Subject:	SGP/SIRS/E2 - Tracker mis-alignment
DataStreams:	sgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
Description:	The solar tracker was not working correctly at this site from 2/3/2005 to 2/5/2005 2359GMT. After this time tracker mounted instruments appear to have been responding correctly. There was no maintenance intervention that rectified the tracking problem. This has happened in the past with the SGP SciTec trackers.
Measurements:	sgpsirsE2.b1: Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) 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(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) sgpsirs20sE2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) sgpsirsE2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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DQRID : D050303.1

Start Date	Start Time	End Date	End Time
02/10/2005	1620	03/10/2005	1600

Subject:	SGP/SIRS/E2 - Reprocessed: Incorrect DIR calibration coefficients
DataStreams:	sgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
Description:	During the DIR/UIR instrument changeout on 2/10/2005 the new datalogger program contained incorrect calibration coefficients for the DIR instrument. The program was corrected on 3/10/2005. These data were reprocessed and archived in September 2006.
Measurements:	sgpsirsE2.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_case_temp) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded Pyrgeometer(inst_down_long_shaded_dome_temp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) sgpsirsE2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsirs20sE2.a0: Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_case_resist)

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DQRID : D060630.10

Start Date	Start Time	End Date	End Time
02/12/2004	1630	02/23/2005	1615

Subject:	SGP/SIRS/E2 - Reprocessed: Longwave Calibration error
DataStreams:	sgpsirsE2.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:	sgpsirsE2.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp) Upwelling Longwave Hemispheric Net Infrared(up_long_netir) Downwelling Longwave Hemispheric Net Infrared(down_long_netir) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)

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