Data Quality Reports for Session: 135043 User: anderberg Completed: 05/23/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040126.3SGP/SIRS/E21 - False signalsgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
D040205.1SGP/SIRS/E1/E2/E3/E5/E8 - Snow on RadiometerssgpsirsE1.00, 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
D040227.3SGP/SIRS/E2 - Reprocess: Incorrect shortwave radiometer calibration coefficientssgpsirsE2.00, sgpsirsE2.b1
D040229.2SGP/SIRS/E21 - Shadowband MisalignmentsgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
D040329.1SGP/SIRS/E21 - Instrument logger time problem, UnknownsgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
D040420.4SGP/SIRS/E27 - incorrect trackingsgpsirsE27.00, sgpsirsE27.b1, sgpsirs20sE27.a0
D040601.1SGP/SIRS/E21 - Dirt on domesgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
D040706.1SGP/SIRS/E22 - Failed NIP sensor cablesgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
D040712.3SGP/SIRS/E24 - NIP shaded near sunrisesgpsirsE24.b1, sgpsirs20sE24.a0
D050131.25SGP/SIRS/E2 - Ice stormsgpsirsE2.b1, sgpsirs20sE2.a0
D050205.3SGP/SIRS/E2 - Tracker mis-alignmentsgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
D050227.1SGP/SIRS/E24 - Erratic downwelling shortwave datasgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
D050303.1SGP/SIRS/E2 - Reprocessed: Incorrect DIR calibration coefficientssgpsirsE2.00, sgpsirsE2.b1, sgpsirs20sE2.a0
D050412.3SGP/SIRS/E24 - Dirt on domesgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
D050520.1SGP/SIRS/E22 - Intermittent upwelling longwave data losssgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
D060630.10SGP/SIRS/E2 - Reprocessed: Longwave Calibration errorsgpsirsE2.b1
D060630.26SGP/SIRS/E20 - Reprocessed: Longwave Calibration errorsgpsirsE20.b1
D060630.27SGP/SIRS/E21 - Reprocessed: Longwave Calibration errorsgpsirsE21.b1
D060630.28SGP/SIRS/E22 - Reprocessed: Longwave Calibration errorsgpsirsE22.b1
D060630.29SGP/SIRS/E24 - Reprocessed: Longwave Calibration errorsgpsirsE24.b1
D060630.30SGP/SIRS/E27 - Reprocessed: Longwave Calibration errorsgpsirsE27.b1
D080610.1SGP/SIRS/E20 - Missing datasgpsirsE20.b1, sgpsirs20sE20.a0


DQRID : D040126.3
Start DateStart TimeEnd DateEnd Time
10/19/2003000002/26/20042359
Subject:
SGP/SIRS/E21 - False signal
DataStreams:sgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
Description:
During clear-sky conditions, downwelling shortwave values spike downward approximately 50 
to 200 W/m^2 around 22:15 UTC for about 15 minutes. This problem occurs at about the same 
time for the same duration each day during the indicated period of the year.  This 
effect is due to a shadow from the Rotating Bird Deterrent (RBD) installed earlier in the year 
to prevent extensive bird droppings at the site.  The RBD is installed at such a 
location that it will partially shade the downwelling shortwave PSP from 19 October to 23 
February of the year.
Measurements:sgpsirs20sE21.a0:
  • inst_global
sgpsirsE21.00:
  • Raw data stream - documentation not supported
sgpsirsE21.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_hemisp_std

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DQRID : D040205.1
Start DateStart TimeEnd DateEnd Time
02/02/2004120002/02/20042000
Subject:
SGP/SIRS/E1/E2/E3/E5/E8 - Snow on Radiometers
DataStreams:sgpsirsE1.00, sgpsirsE1.b1, sgpsirsE2.00, sgpsirsE2.b1, sgpsirsE3.00, sgpsirsE3.b1,
sgpsirsE5.00, sgpsirsE5.b1, sgpsirsE8.00, sgpsirsE8.b1, sgpsirs20sE1.a0, sgpsirs20sE2.a0,
sgpsirs20sE3.a0, sgpsirs20sE5.a0, sgpsirs20sE8.a0
Description:
A large discrepancy between the measured values of downwelling hemispheric shortwave 
radiation and the derived values occurred on 2/02 at the listed sites.  The difference is on 
the order of 200 Wm^(-2) at E2 and to a lesser extent at the other affected stations.  
This problem most likely resulted from a previous day or night snow/ice accumulation on 
the Direct(NIP), Downwelling Sortwave(PSP) and/or  Downwelling Diffuse(8-48) instruments.  
During the morning hours of 02/02, Approx 1300-2000GMT, snow/ice was covering one or more 
of these three instruments resulting in faulty readings and incorrect derived 
downwelling shortwave values as well.  Instrument readings indicate the problem resolved itself 
later in the day through normal meltoff.
Measurements:sgpsirs20sE3.a0:
  • inst_diffuse
  • inst_direct_normal
  • inst_global
sgpsirsE3.00:
  • Raw data stream - documentation not supported
sgpsirs20sE5.a0:
  • inst_global
  • inst_direct_normal
  • inst_diffuse
sgpsirs20sE1.a0:
  • inst_global
  • inst_direct_normal
  • inst_diffuse
sgpsirsE1.b1:
  • down_short_hemisp_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • down_short_diffuse_hemisp_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • short_direct_normal_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
sgpsirs20sE8.a0:
  • inst_direct_normal
  • inst_diffuse
  • inst_global
sgpsirsE2.b1:
  • down_short_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • down_short_diffuse_hemisp_std
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • short_direct_normal_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
sgpsirsE1.00:
  • Raw data stream - documentation not supported
sgpsirsE8.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • short_direct_normal_std
  • down_short_hemisp_std
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpsirs20sE2.a0:
  • inst_direct_normal
  • inst_diffuse
  • inst_global
sgpsirsE8.00:
  • Raw data stream - documentation not supported
sgpsirsE3.b1:
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • down_short_diffuse_hemisp_std
  • down_short_hemisp_std
  • short_direct_normal_std
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
sgpsirsE5.b1:
  • down_short_hemisp_std
  • short_direct_normal_std
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
sgpsirsE2.00:
  • Raw data stream - documentation not supported
sgpsirsE5.00:
  • Raw data stream - documentation not supported

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DQRID : D040227.3
Start DateStart TimeEnd DateEnd Time
02/12/2004161203/25/20041600
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:
  • down_short_hemisp_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_diffuse_hemisp_std
  • short_direct_normal_std
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • up_short_hemisp_std
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpsirsE2.00:
  • Raw data stream - documentation not supported

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DQRID : D040229.2
Start DateStart TimeEnd DateEnd Time
02/20/2004130003/03/20041300
Subject:
SGP/SIRS/E21 - Shadowband Misalignment
DataStreams:sgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
Description:
The NIP reported values close to zero and downwelling shortwave global and diffuse were 
equivalent due to tracker failure.  

Maintenance replaced tracker 2/27, but couldn't replace instruments until 03/02 2000 GMT 
due to bird poop contamination.
Measurements:sgpsirs20sE21.a0:
  • inst_diffuse
  • inst_direct_normal
sgpsirsE21.00:
  • Raw data stream - documentation not supported
sgpsirsE21.b1:
  • down_short_diffuse_hemisp_std
  • short_direct_normal_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)

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DQRID : D040329.1
Start DateStart TimeEnd DateEnd Time
03/21/2004120003/24/20040200
Subject:
SGP/SIRS/E21 - Instrument logger time problem, Unknown
DataStreams:sgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
Description:
Values of diffuse hemispheric shortwave radiation differ from derived values by at most 70 
Wm^(-2).  The incident appears to be isolated to 3/21, 3/22, and 3/23. An estimation of 
solar noon using downwelling shortwave hemispheric irradiance from the PSP shows solar 
noon to oocur at around 1845GMT on 3/21. Calculated solar noon occurs at E21 at 1831GMT for 
3/21/2004.  There appears to be a time discrepancy in the datalogger for these dates.  
04/01 is the next date with enough sun to determine solar noon and compare to calculated.  
The data from this date appears correct.  Ronald Reed [rreed@ops.sgp.arm.gov] reports 
the logger did not receive any reportable time updates during the late March time period.  
We don't know what happened during these three dates but from 3/24 on data looks acceptable.
Measurements:sgpsirs20sE21.a0:
  • inst_down_long_shaded_case_resist
  • inst_diffuse
  • inst_down_long_shaded_dome_resist
  • inst_global
  • inst_up_long_hemisp_tp
  • time_offset
  • inst_up_short_hemisp
  • inst_up_long_case_resist
  • inst_direct_normal
  • inst_up_long_dome_resist
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)
sgpsirsE21.00:
  • Raw data stream - documentation not supported
sgpsirsE21.b1:
  • down_short_diffuse_hemisp_std
  • up_short_hemisp_std
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • down_long_hemisp_shaded_std
  • inst_up_long_case_temp
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • up_long_hemisp_std
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • down_short_hemisp_std
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • inst_up_long_dome_temp
  • short_direct_normal_std
  • inst_down_long_shaded_dome_temp
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • inst_down_long_shaded_case_temp
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • time_offset
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)

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DQRID : D040420.4
Start DateStart TimeEnd DateEnd Time
04/14/2004170009/15/20041650
10/27/2004150011/05/20041900
Subject:
SGP/SIRS/E27 - incorrect tracking
DataStreams:sgpsirsE27.00, sgpsirsE27.b1, sgpsirs20sE27.a0
Description:
The solar tracker at E27 was not functioning properly.  The problem affected tracker 
mounted instruments: downwelling diffuse 8-48 and direct normal pyrheliometer NIP.  

After tracker adjustment on 4/14/2004 1700GMT the tracker stopped tracking properly during 
afternoon hours.  Attempts to correct tracker operation throughout the failure period 
resulted in variations on incorrect tracker operation.  No replacement tracker was available.

After adjustment on 9/15/2004 the tracker problem was resolved.  It is unclear what, other 
than typical az and zen tracker software changes by field techs, corrected the problem.  
This problem period corresponds to the first time range specified (4/14 to 9/15). 

On 10/27/2004 a replacement tracker was installed at E27.  Technical difficulties kept 
tracker out of service until 11/05/2004. The replacement tracker at E27 was put into serice 
by the field techs on 11/05/2004 1830GMT.  The tracker has been tracking correctly since 
this time.  This problem period corresponds to the second time range (10/27 to 11/05).
Measurements:sgpsirsE27.b1:
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • short_direct_normal_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
sgpsirsE27.00:
  • Raw data stream - documentation not supported
sgpsirs20sE27.a0:
  • inst_direct_normal
  • inst_diffuse

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DQRID : D040601.1
Start DateStart TimeEnd DateEnd Time
05/28/2004150006/09/20041342
Subject:
SGP/SIRS/E21 - Dirt on dome
DataStreams:sgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
Description:
Measured downwelling shortwave values differed from calculated 
              (direct + diffuse) by +/-100 W/m^2 in the afternoon.  Pattern of
              differences is indicative of a dirty downwelling shortwave dome.
              Maintenance on 6/9 cleaned water spots on the dome.  Other 
              downwelling instruments may have also been dirty during this 
              period.
Measurements:sgpsirs20sE21.a0:
  • inst_diffuse
  • inst_global
  • inst_direct_normal
sgpsirsE21.00:
  • Raw data stream - documentation not supported
sgpsirsE21.b1:
  • down_short_diffuse_hemisp_std
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • down_short_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)

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DQRID : D040706.1
Start DateStart TimeEnd DateEnd Time
06/30/2004015607/07/20041800
Subject:
SGP/SIRS/E22 - Failed NIP sensor cable
DataStreams:sgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
Description:
The suntracker was driven past it optical limit switch and pulled the direct normal (NIP) 
instrument cable from its connector.
Measurements:sgpsirs20sE22.a0:
  • inst_direct_normal
sgpsirsE22.00:
  • Raw data stream - documentation not supported
sgpsirsE22.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • short_direct_normal_std
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)

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DQRID : D040712.3
Start DateStart TimeEnd DateEnd Time
04/17/2003120005/20/20031300
07/26/2003130009/06/20031200
04/08/2004120005/20/20041300
07/26/2004130009/06/20041200
Subject:
SGP/SIRS/E24 - NIP shaded near sunrise
DataStreams:sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
The NIP is shaded by the EF laptop computer enclosure near sunrise during parts of the 
Spring and Summer.  This has occurred from 04/08 to 05/20 and from 07/26 to 09/06 every year 
since 2001 and will occur during these date ranges in the future as well.  The shading 
occurs for a few minutes each day between 1200 and 1300 GMT depending on the time of the 
year.  For the early dates, shading occurs a little after 1200 GMT and by 05/20 shading 
happens nearer to 1300 GMT. In late July the shading occurs near 1300 GMT and closer to 
1200 GMT by 09/06.
Measurements:sgpsirsE24.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • short_direct_normal_std
sgpsirs20sE24.a0:
  • inst_direct_normal

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DQRID : D050131.25
Start DateStart TimeEnd DateEnd Time
01/05/2005090201/13/20051618
Subject:
SGP/SIRS/E2 - Ice storm
DataStreams:sgpsirsE2.b1, sgpsirs20sE2.a0
Description:
Data missing due to ice storm.
Measurements:sgpsirsE2.b1:
  • down_short_hemisp_std
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • time_offset
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • lat
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • up_long_hemisp_std
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • inst_up_long_case_temp
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • down_short_diffuse_hemisp_std
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
  • inst_down_long_shaded_case_temp
  • inst_up_long_dome_temp
  • up_short_hemisp_std
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • down_long_hemisp_shaded_std
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • lon
  • inst_down_long_shaded_dome_temp
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • alt
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • short_direct_normal_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • vBatt
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • base_time
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
sgpsirs20sE2.a0:
  • inst_up_long_hemisp_tp
  • inst_down_long_shaded_dome_resist
  • lon
  • lat
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)
  • inst_down_long_shaded_case_resist
  • base_time
  • inst_up_long_dome_resist
  • inst_direct_normal
  • alt
  • inst_up_long_case_resist
  • inst_up_short_hemisp
  • time_offset
  • inst_diffuse
  • inst_global

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DQRID : D050205.3
Start DateStart TimeEnd DateEnd Time
02/03/2005165402/05/20052359
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:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_diffuse_hemisp_std
  • short_direct_normal_std
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpsirs20sE2.a0:
  • inst_diffuse
  • inst_direct_normal
sgpsirsE2.00:
  • Raw data stream - documentation not supported

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DQRID : D050227.1
Start DateStart TimeEnd DateEnd Time
02/13/2005194503/17/20051745
Subject:
SGP/SIRS/E24 - Erratic downwelling shortwave data
DataStreams:sgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
Downwelling shortwave hemispheric readings are occasionally erratic, jumping to very high 
or very low values for short periods of time. SGP PM techs reseated all Downwelling 
Shortwave PSP instrument connections on 3/17/2005 approx 1945GMT.  The problem did not reoccur 
after that time but the DS cable was replaced on 3/31/2005 approx 1815 GMT to ensure the 
problem did not reappear.
Measurements:sgpsirsE24.00:
  • Raw data stream - documentation not supported
sgpsirsE24.b1:
  • 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)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
sgpsirs20sE24.a0:
  • inst_global

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DQRID : D050303.1
Start DateStart TimeEnd DateEnd Time
02/10/2005162003/10/20051600
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:
  • inst_down_long_shaded_case_temp
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • inst_down_long_shaded_dome_temp
  • down_long_hemisp_shaded_std
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
sgpsirs20sE2.a0:
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)
  • inst_down_long_shaded_case_resist
  • inst_down_long_shaded_dome_resist
sgpsirsE2.00:
  • Raw data stream - documentation not supported

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DQRID : D050412.3
Start DateStart TimeEnd DateEnd Time
04/07/2005000004/14/20051610
Subject:
SGP/SIRS/E24 - Dirt on dome
DataStreams:sgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
The Downwelling Shortwave Hemispheric (DSH) Irradiance data were erratic. The Pyranometer 
instrument dome at this site was likely dirty given the relatively large spread between 
the measured DSH and derived DSH readings during the middle part of the day (up to 50 
W/m^2). Rain on 04/06 most likely contributed to this problem.  Preventative maintenance on 
4/14 effectively cleaned the pyranometer dome.  Preventative maintenance reports indicate 
dry-water spots on dome when it was cleaned on 4/14.
Measurements:sgpsirsE24.00:
  • Raw data stream - documentation not supported
sgpsirsE24.b1:
  • 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)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
sgpsirs20sE24.a0:
  • inst_global

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DQRID : D050520.1
Start DateStart TimeEnd DateEnd Time
05/07/2005000007/20/20052000
Subject:
SGP/SIRS/E22 - Intermittent upwelling longwave data loss
DataStreams:sgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
Description:
Upwelling longwave hemispheric data drops out occasionally during the afternoon hours.  
Maintenance determined that the Upwelling LW Hemispheric irradiance instrument, the PIR, 
had a failed cable affecting only the thermopile measurement of this instrument.  Cable was 
replaced 7/20/05 2000GMT.
Measurements:sgpsirs20sE22.a0:
  • inst_up_long_hemisp_tp
  • inst_up_long_dome_resist
  • inst_up_long_case_resist
sgpsirsE22.00:
  • Raw data stream - documentation not supported
sgpsirsE22.b1:
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • up_long_hemisp_std

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DQRID : D060630.10
Start DateStart TimeEnd DateEnd Time
02/12/2004163002/23/20051615
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:
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)

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DQRID : D060630.26
Start DateStart TimeEnd DateEnd Time
07/23/2003210002/15/20062030
Subject:
SGP/SIRS/E20 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE20.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2003. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in November 2006.
Measurements:sgpsirsE20.b1:
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D060630.27
Start DateStart TimeEnd DateEnd Time
07/23/2003152002/15/20061515
Subject:
SGP/SIRS/E21 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE21.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2003. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in November 2006.
Measurements:sgpsirsE21.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D060630.28
Start DateStart TimeEnd DateEnd Time
07/23/2003183002/15/20061741
Subject:
SGP/SIRS/E22 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE22.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.    
                                                                         
The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in August 2006.
Measurements:sgpsirsE22.b1:
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D060630.29
Start DateStart TimeEnd DateEnd Time
07/24/2003164002/16/20061705
Subject:
SGP/SIRS/E24 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE24.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 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:sgpsirsE24.b1:
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D060630.30
Start DateStart TimeEnd DateEnd Time
05/16/2003000202/15/20061750
Subject:
SGP/SIRS/E27 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE27.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in May 2003. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in October 2006.
Measurements:sgpsirsE27.b1:
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D080610.1
Start DateStart TimeEnd DateEnd Time
01/24/2003130201/28/20031949
01/30/2003022602/05/20031951
07/11/2003000207/15/20032001
05/18/2005213205/26/20051827
05/27/2005000005/31/20050646
12/10/2007180312/13/20071850
04/17/2008224604/23/20081440
05/04/2008182305/17/20081447
Subject:
SGP/SIRS/E20 - Missing data
DataStreams:sgpsirsE20.b1, sgpsirs20sE20.a0
Description:
Data are missing and unrecoverable.
Measurements:sgpsirsE20.b1:
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • up_short_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • base_time
  • lon
  • inst_up_long_dome_temp
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • inst_down_long_shaded_dome_temp
  • up_long_hemisp_std
  • inst_down_long_shaded_case_temp
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
  • alt
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • time_offset
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • vBatt
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • lat
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • inst_up_long_case_temp
  • down_long_hemisp_shaded_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • down_short_hemisp_std
  • down_short_diffuse_hemisp_std
sgpsirs20sE20.a0:
  • alt
  • time_offset
  • inst_global
  • inst_up_long_case_resist
  • inst_diffuse
  • inst_down_long_shaded_case_resist
  • inst_up_long_dome_resist
  • inst_up_long_hemisp_tp
  • lat
  • inst_up_short_hemisp
  • inst_direct_normal
  • lon
  • base_time
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)
  • inst_down_long_shaded_dome_resist

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END OF DATA