Data Quality Reports for Session: 143015 User: chicobo329 Completed: 06/13/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030916.6SGP/BRS/C1 - low downwelling shortwave readingssgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2
D030917.6SGP/BRS/C1 - Missing data due to Ice storm and clock problemssgp15swfanalbrs1longC1.c1, sgp1swfanalbrs1longC1.c1, sgpbrs20sC1.a0, sgpbrs60sC1.a1,
sgpbrsC1.00, sgpbrsC1.a2
D040608.2SGP/BRS/C1 - NIP sensor failuresgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1
D050225.2SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficientssgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1
D050322.1SGP/BRS/C1 - low downwelling shortwave readingssgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1
D061102.1SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurementsgpbrs20sC1.a0, sgpbrsC1.b1
D110811.1SGP/BRS/C1 - SW Direct Normal incorrectsgpbrs20sC1.a0, sgpbrsC1.b1
D110902.4SGP/BRS/C1 - Tracker failuresgpbrs20sC1.a0, sgpbrsC1.b1
D120118.1SGP/BRS/C1 - Reprocess: Incorrect calibration coefficient for down_short_diffuse_hemispsgpbrs20sC1.a0, sgpbrsC1.b1


DQRID : D030916.6
Start DateStart TimeEnd DateEnd Time
03/05/2001000004/17/20032359
Subject:
SGP/BRS/C1 - low downwelling shortwave readings
DataStreams:sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2
Description:
Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are 
consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in 
clear-sky conditions. Corrective maintenance on 12/1/2004 corrected this offset.  It is not 
clear which CM action corrected the problem since the DS instrument cable was grounded to a 
new location and the DS ventilator fan was found in poor condition and was replaced.  
Either of these issues could have led to the problem observed in this instrument.
Measurements:sgpbrs60sC1.a1:
  • down_short_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
sgpbrs20sC1.a0:
  • inst_global
sgpbrsC1.00:
  • Raw data stream - documentation not supported
sgpbrsC1.a2:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_hemisp_std
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)

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DQRID : D030917.6
Start DateStart TimeEnd DateEnd Time
03/09/2002200003/10/20022348
03/13/2002180003/14/20021500
Subject:
SGP/BRS/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgp15swfanalbrs1longC1.c1, sgp1swfanalbrs1longC1.c1, sgpbrs20sC1.a0, sgpbrs60sC1.a1,
sgpbrsC1.00, sgpbrsC1.a2
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgp15swfanalbrs1longC1.c1:
  • site
  • base_time
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • solar_cos_z
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • sswfluxdn_cloudeffect
  • nsamples_clearsky_detection
  • time_offset
  • time_offset_LST
  • difratiodn_measured_stdev
  • gswfluxdn_cloudeffect
  • difcloudeffect_normalized
  • sswfluxdn_clearskyfit
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • guvbdn_measured
  • lon
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • difratiodn_clearskyfit
  • Clear-sky Fit Estimated Sfc. Albedo from Shortwave Irrad. Measurements (calb)(albedosw_clearskyfit)
  • lat
  • nsamples_cloudfraction
  • sswfluxdn_measured
  • difratiodn_measured
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (csw)(gswfluxdn_clearskyfit)
  • guvbdn_clearskyfit
  • sun_earth_distance
  • difswfluxdn_cloudeffect
  • nsamples_gswfluxdn_clearskyfit
  • base_time_LST
  • alt
  • nsamples_sswfluxdn_measured
  • Fractional Sky Cover(cloudfraction)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
sgpbrs60sC1.a1:
  • up_long_hemisp_std
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • vBatt
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • down_long_hemisp_shaded_std
  • alt
  • down_short_hemisp_std
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • up_short_hemisp_std
  • down_short_diffuse_hemisp_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • time_offset
  • lat
  • short_direct_normal_std
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • base_time
  • lon
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
sgp1swfanalbrs1longC1.c1:
  • difswfluxdn_cloudeffect
  • lat
  • coef_clearsky_guvb_b
  • coef_clearsky_guvb_a
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • solar_cos_z
  • guvbdn_measured
  • sswfluxdn_measured
  • coef_clearsky_albedo_a
  • coef_clearsky_albedo_b
  • Clear-sky Fit Estimated Sfc. Albedo from Shortwave Irrad. Measurements (calb)(albedosw_clearskyfit)
  • sswfluxdn_cloudeffect
  • coef_clearsky_ssw_a
  • coef_clearsky_ssw_b
  • coef_clearsky_difratio_b
  • coef_clearsky_difratio_a
  • sun_earth_distance
  • coef_clearsky_gsw_b
  • coef_clearsky_gsw_a
  • coef_clearsky_dsw_c
  • coef_clearsky_dsw_a
  • sun_earth_distance_dailyaverage
  • coef_clearsky_dsw_b
  • lon
  • base_time
  • flag_clearsky_detection
  • time_offset
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • difratiodn_clearskyfit
  • guvbdn_clearskyfit
  • coef_date
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • sswfluxdn_clearskyfit
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • base_time_LST
  • site
  • difratiodn_measured
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • time_offset_LST
  • alt
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (csw)(gswfluxdn_clearskyfit)
  • gswfluxdn_cloudeffect
sgpbrs20sC1.a0:
  • inst_diffuse
  • inst_down_long_shaded_dome_resist
  • lon
  • inst_up_long_dome_resist
  • alt
  • inst_up_short_hemisp
  • lat
  • base_time
  • time_offset
  • inst_global
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)
  • inst_down_long_shaded_case_resist
  • inst_up_long_hemisp_tp
  • inst_up_long_case_resist
  • inst_direct_normal
sgpbrsC1.00:
  • Raw data stream - documentation not supported
sgpbrsC1.a2:
  • down_long_hemisp_shaded_std
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • base_time
  • lat
  • inst_up_long_dome_temp
  • alt
  • up_long_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • lon
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • inst_down_long_shaded_case_temp
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • down_short_diffuse_hemisp_std
  • inst_up_long_case_temp
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • down_short_hemisp_std
  • time_offset
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • inst_down_long_shaded_dome_temp
  • short_direct_normal_std
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • up_short_hemisp_std
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • vBatt

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DQRID : D040608.2
Start DateStart TimeEnd DateEnd Time
06/02/2004173406/15/20042010
Subject:
SGP/BRS/C1 - NIP sensor failure
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1
Description:
Normal incidence values of downwelling shortwave radiation were
               reported as -9999 (missing).  The NIP instrument was damaged by
               lightning in the area near the time of failure.
Measurements:sgpbrsC1.b1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
sgpbrs20sC1.a0:
  • inst_direct_normal
sgpbrsC1.00:
  • Raw data stream - documentation not supported

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DQRID : D050225.2
Start DateStart TimeEnd DateEnd Time
08/05/2004150012/03/20041700
Subject:
SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1
Description:
Lightening strike on or near 6/2/2004 took the BRS NIP(31747E6) out of service, on or near 
6/15 the NIP was replaced and the datalogger program was changed to reflect the new 
NIP(31343E6). On 8/5/2004 the DIR (Downwelling longwave) instrument was changed out and a new 
program was loaded to reflect a new DIR.  The new program contained the original 
installed shortwave instrument calibration coefficients including NIP 31747E6. Thus from 8/5 to 
when the shortwave instruments were changed out on 12/3 the wrong s/n and calibration 
factor (i.e. 31747E6) was applied to the actual NIP(31343E6)installed at BRS C1.
Measurements:sgpbrsC1.b1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
sgpbrs20sC1.a0:
  • inst_direct_normal
sgpbrsC1.00:
  • Raw data stream - documentation not supported

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DQRID : D050322.1
Start DateStart TimeEnd DateEnd Time
04/18/2003000012/17/20042030
Subject:
SGP/BRS/C1 - low downwelling shortwave readings
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1
Description:
Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are 
consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in 
clear-sky conditions. Corrective maintenance on 12/17/2004 corrected this offset.  It is not 
clear which CM action corrected the problem since the DS instrument cable was grounded to 
a new location and the DS ventilator fan was found in poor condition and was replaced.  
Either of these issues could have led to the problem observed in this instrument.
Measurements:sgpbrsC1.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • down_short_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
sgpbrs20sC1.a0:
  • inst_global
sgpbrsC1.00:
  • Raw data stream - documentation not supported

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DQRID : D061102.1
Start DateStart TimeEnd DateEnd Time
12/11/2003192006/14/20042359
Subject:
SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
On 20031211 the Downwelling LW pyrgeometer was replaced but the calibrations were not 
updated.  Calibrations have been corrected in data beginning 20040615.
Measurements:sgpbrsC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • down_long_hemisp_shaded_std
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
sgpbrs20sC1.a0:
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)

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DQRID : D110811.1
Start DateStart TimeEnd DateEnd Time
06/12/2011000006/14/20111750
Subject:
SGP/BRS/C1 - SW Direct Normal incorrect
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
Apparent lightning strike in the instrument cluster area resulted in a failed NIP. Data 
are missing or incorrect.  

The SIRS was due for calibration change outs so the US, DS, DD and NIP were replaced. The 
updated program was loaded at approximately 06/14/2011 1739 GMT.

An estimate of direct normal values can be derived using the following formula:

short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle)
Measurements:sgpbrsC1.b1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
sgpbrs20sC1.a0:
  • inst_direct_normal

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DQRID : D110902.4
Start DateStart TimeEnd DateEnd Time
06/12/2011000006/13/20111610
Subject:
SGP/BRS/C1 - Tracker failure
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
Apparent lightning strike in the instrument cluster area resulted in a failed tracker. 
Site ops found the suntracker at home position, power cycled the suntracker and replaced 
fuse.
Measurements:sgpbrsC1.b1:
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpbrs20sC1.a0:
  • inst_diffuse

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DQRID : D120118.1
Start DateStart TimeEnd DateEnd Time
06/14/2011174012/18/20112359
Subject:
SGP/BRS/C1 - Reprocess: Incorrect calibration coefficient for down_short_diffuse_hemisp
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
Applied calibration coefficient and serial number for down_short_diffuse was incorrect for 
the specified period.

Perform the following calculation to correct the data, 
DD= downwelling diffuse instrument:
Old Calibration coefficient = 114.74[W/m2\mV]
New Calibration Coefficient = 109.51[W/m2\mV]   
DD(new)[W/m2]=( DD(old)[W/m2]/ 114.74 [W/m2\mV] )* 109.51 [W/m2/mV]
Measurements:sgpbrsC1.b1:
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpbrs20sC1.a0:
  • inst_diffuse

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