Data Quality Reports for Session: 103350 User: danahe Completed: 12/19/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030917.16SGP/SIRS/C1 - Missing data due to Ice storm and clock problemssgpsirsC1.00, sgpsirsC1.a2, sgpsirsC1.b1, sgpsirs20sC1.a0, sgpsirs60sC1.a1,
sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
D050420.3SGP/SIRS/C1 - Reprocess: Adjust Direct Normal IrradiancesgpsirsC1.00, sgpsirsC1.01, sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
D050502.2SGP/SIRS/C1 - SWFANAL Data description errorsgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1


DQRID : D030917.16
Start DateStart TimeEnd DateEnd Time
03/09/2002210103/10/20022125
03/13/2002180103/14/20021602
Subject:
SGP/SIRS/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgpsirsC1.00, sgpsirsC1.a2, sgpsirsC1.b1, sgpsirs20sC1.a0, sgpsirs60sC1.a1,
sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgp1swfanalsirs1longC1.c1:
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Clear-sky Fit Coefficient a to Albedo (Alba)(coef_clearsky_albedo_a)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Site Identification(site)
  • Clear-sky Fit Coefficient b to Global UVB Irradiance (UVBb)(coef_clearsky_guvb_b)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Clear-sky Fit Coefficient b to Albedo (Albb)(coef_clearsky_albedo_b)
  • Clear-sky Detection Flag (clrf)(flag_clearsky_detection)
  • Clear-sky Fit Coefficient b to Global Shortwave Irradiance (CSWb)(coef_clearsky_gsw_b)
  • Daily Averaged Distance from the Earth to the Sun (auavg)(sun_earth_distance_dailyaverage)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Clear-sky Fit Coefficient b to Summed Shortwave Irradiance (CSWb)(coef_clearsky_ssw_b)
  • Time Offset from base_time_LST(time_offset_LST)
  • Clear-sky Fit Coefficient a to Summed Shortwave Irradiance (CSWa)(coef_clearsky_ssw_a)
  • east longitude for all the input platforms.(lon)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Clear-sky Fit Coefficient a to Global Shortwave Irradiance (CSWa)(coef_clearsky_gsw_a)
  • Clear-sky Fit Coefficient b to Diffuse Irradiance to Total Irradiance Ratio
    (DFRb)(coef_clearsky_difratio_b)
  • Time offset of tweaks from base_time(time_offset)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • altitude above sea levelaltunits(alt)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Date (YYMMDD LST) for which the Coefficients are Applicable(coef_date)
  • Clear-sky Fit Coefficient a to Global UVB Irradiance (UVBa)(coef_clearsky_guvb_a)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Clear-sky Fit Coefficient b to Global minus Summed Shortwave Irradiance
    Difference (SCORb)(coef_clearsky_dsw_b)
  • Clear-sky Offset Coefficient c for Global minus Summed Shortwave Irradiance
    Difference (SCORc)(coef_clearsky_dsw_c)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Beginning Time of File (LST)(base_time_LST)
  • north latitude for all the input platforms.(lat)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Time offset from base_time(base_time)
  • 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 Coefficient a to Diffuse Irradiance to Total Irradiance Ratio
    (DFRa)(coef_clearsky_difratio_a)
  • Clear-sky Fit Coefficient a to Global minus Summed Shortwave Irradiance
    Difference (SCORa)(coef_clearsky_dsw_a)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)

sgpsirsC1.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • altitude above sea levelaltunits(alt)
  • 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, Standard Deviation(short_direct_normal_std)
  • Time offset from base_time(base_time)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • east longitude for all the input platforms.(lon)
  • 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(down_short_diffuse_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • north latitude for all the input platforms.(lat)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Battery voltage(vBatt)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Time offset of tweaks from base_time(time_offset)

sgpsirsC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsirs60sC1.a1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Time offset from base_time(base_time)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • east longitude for all the input platforms.(lon)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • north latitude for all the input platforms.(lat)
  • 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, Maxima(down_long_hemisp_shaded_max)
  • altitude above sea levelaltunits(alt)
  • 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)
  • Time offset of tweaks from base_time(time_offset)
  • Battery voltage(vBatt)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)

sgp15swfanalsirs1longC1.c1:
  • Beginning Time of File (LST)(base_time_LST)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_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)
  • east longitude for all the input platforms.(lon)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • Time offset of tweaks from base_time(time_offset)
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Number of 1-minute Measured Downwelling Summed Shortwave Irradiances in the
    15-minute Interval (Nssw)(nsamples_sswfluxdn_measured)
  • Estimated Average Fractional Sky Cover over the Hemispheric Dome (cf)(cloudfraction)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • north latitude for all the input platforms.(lat)
  • Ratio of Measured minus Clear-sky Fit Estimated Downwelling Diffuse Shortwave
    Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance
    (di(difcloudeffect_normalized)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • Time offset from base_time(base_time)
  • Time Offset from base_time_LST(time_offset_LST)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Number of 1-minute Clear-sky Fit Downwelling Global Shortwave Irradiance
    Estimates in the 15-minute Interval (Ncsw)(nsamples_gswfluxdn_clearskyfit)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Site Identification(site)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • Number of 1-minute Clear-sky Detections in the 15-minute Interval (Nclr)(nsamples_clearsky_detection)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Number of 1-minute Cloud Fraction Estimates in the 15-minute Interval (Ncf)(nsamples_cloudfraction)
  • altitude above sea levelaltunits(alt)

sgpsirs20sC1.a0:
  • north latitude for all the input platforms.(lat)
  • Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile
    Voltage(inst_up_short_hemisp)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • east longitude for all the input platforms.(lon)
  • 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 Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Time offset from base_time(base_time)
  • altitude above sea levelaltunits(alt)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)

sgpsirsC1.a2:
  • Time offset from base_time(base_time)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • 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)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • altitude above sea levelaltunits(alt)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • 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)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • 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)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Battery voltage(vBatt)
  • north latitude for all the input platforms.(lat)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)


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DQRID : D050420.3
Start DateStart TimeEnd DateEnd Time
08/03/2000130008/15/20011350
Subject:
SGP/SIRS/C1 - Reprocess: Adjust Direct Normal Irradiance
DataStreams:sgpsirsC1.00, sgpsirsC1.01, sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
Description:
Direct normal broadband shortwave irradiance measured by NIP s/n 30722E6 was found to have 
a 0.62%% negative bias when compared in-situ with absolute cavity radiometer 
measurements taken on August 21, 2000.  The estimated measurement uncertainty of the calibration of 
NIP s/n 30722E6 on July 18, 2000 was -2.6% to +4.8%.  

Data from NIP s/n 30722E6 can be adjusted according to the in-situ comparisons to reduce 
the apparent measurement bias.
Measurements:sgpsirsC1.01:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgp1swfanalsirs1longC1.c1:
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)

sgpsirsC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgp15swfanalsirs1longC1.c1:
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)


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DQRID : D050502.2
Start DateStart TimeEnd DateEnd Time
03/25/1997000012/10/20032359
Subject:
SGP/SIRS/C1 - SWFANAL Data description error
DataStreams:sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
Description:
The long name attribute for the cloud effect fields incorrectly
defines the cloud effect to be the difference between the 
clearskyfit and measured values:

"Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ;

The cloud effects are correctly calculated by subtracting the 
irradiance calculated in the clear sky fit from the measured 
irradiance.

"Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ;

NOTE: this is just a documentation error.  The data are correctly
calculated.
Measurements:sgp1swfanalsirs1longC1.c1:
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)

sgp15swfanalsirs1longC1.c1:
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)


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END OF DATA