Data Quality Reports for Session: 114622 User: anderberg Completed: 10/06/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050131.25SGP/SIRS/E2 - Ice stormsgpsirs20sE2.a0, sgpsirsE2.b1
D050205.3SGP/SIRS/E2 - Tracker mis-alignmentsgpsirs20sE2.a0, sgpsirsE2.00, sgpsirsE2.b1
D050227.1SGP/SIRS/E24 - Erratic downwelling shortwave datasgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1
D050303.1SGP/SIRS/E2 - Reprocessed: Incorrect DIR calibration coefficientssgpsirs20sE2.a0, sgpsirsE2.00, sgpsirsE2.b1
D050412.3SGP/SIRS/E24 - Dirt on domesgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1
D050520.1SGP/SIRS/E22 - Intermittent upwelling longwave data losssgpsirs20sE22.a0, sgpsirsE22.00, sgpsirsE22.b1
D050810.3SGP/SIRS/E20 - Downwelling Shortwave PSP Damaged by Lightningsgpsirs20sE20.a0, sgpsirsE20.00, sgpsirsE20.b1
D051117.1SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficientssgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1
D060403.4SGP/SIRS/E20 - Instrument noise problemsgpsirs20sE20.a0, sgpsirsE20.00, sgpsirsE20.b1
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 datasgpsirs20sE20.a0, sgpsirsE20.b1


DQRID : D050131.25
Start DateStart TimeEnd DateEnd Time
01/05/2005090201/13/20051618
Subject:
SGP/SIRS/E2 - Ice storm
DataStreams:sgpsirs20sE2.a0, sgpsirsE2.b1
Description:
Data missing due to ice storm.
Measurements:sgpsirsE2.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, 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, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Battery Voltage(vBatt)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • lon(lon)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, 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, Pyrgeometer(short_direct_normal)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Instantaneous Case Temperature(inst_up_long_case_temp)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Dummy altitude for Zeb(alt)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • lat(lat)
  • 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, 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)
  • base time(base_time)
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer 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(inst_up_long_hemisp_tp)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • lat(lat)
  • lon(lon)
  • Dummy altitude for Zeb(alt)

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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:sgpsirs20sE2.a0, sgpsirsE2.00, sgpsirsE2.b1
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, Pyrgeometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
sgpsirs20sE2.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
sgpsirsE2.00:
  • null(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:sgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1
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:
  • null(Raw data stream - documentation not supported)
sgpsirs20sE24.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsE24.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)

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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:sgpsirs20sE2.a0, sgpsirsE2.00, sgpsirsE2.b1
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:
  • null(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 : D050412.3
Start DateStart TimeEnd DateEnd Time
04/07/2005000004/14/20051610
Subject:
SGP/SIRS/E24 - Dirt on dome
DataStreams:sgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1
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:
  • null(Raw data stream - documentation not supported)
sgpsirs20sE24.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsE24.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)

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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:sgpsirs20sE22.a0, sgpsirsE22.00, sgpsirsE22.b1
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:
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
sgpsirsE22.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
sgpsirsE22.00:
  • null(Raw data stream - documentation not supported)

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DQRID : D050810.3
Start DateStart TimeEnd DateEnd Time
08/04/2005220708/17/20051840
Subject:
SGP/SIRS/E20 - Downwelling Shortwave PSP Damaged by Lightning
DataStreams:sgpsirs20sE20.a0, sgpsirsE20.00, sgpsirsE20.b1
Description:
The PSP was damaged by a lightning strike on 8/04/05 (22:10 GMT).  Data from other 
radiometers are good after this event.  

The PSP, NIP and shaded 8-48 were replaced 8/17/05 and the system returned to service at 
18:40 GMT.

Downwelling Shortwave (DS) data from the unshaded PSP during this period is reported as 
0.0 W/sq m.  The DS can be computed from available Direct Normal (NIP), Downwelling Diffuse 
(DD), and the computed Solar Zenith Angle (SZA) using the following equation:

    DS = NIP * Cos(SZA) + DD

Estimated uncertainties of the computed values are actually lower than those of the 
measured DS  (+/- 3% or 4% vs. +/- 5% to 10% respectively, depending on SZA).
Measurements:sgpsirsE20.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
sgpsirs20sE20.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsE20.00:
  • null(Raw data stream - documentation not supported)

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DQRID : D051117.1
Start DateStart TimeEnd DateEnd Time
08/18/2005141511/23/20051706
Subject:
SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficients
DataStreams:sgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1
Description:
Calibration coefficient for the downwelling diffuse measurement (8-48 B&W Eppley 
instrument) was incorrect after the instrument replacement 8/18/2005.

Affected downwelling diffuse irradiance data can be corrected:
Irr(corr) = Irr(uncorr) / 122.85 * 112.85 (or a overall multiplier of .9186)
Measurements:sgpsirsE24.00:
  • null(Raw data stream - documentation not supported)
sgpsirs20sE24.a0:
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
sgpsirsE24.b1:
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)

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DQRID : D060403.4
Start DateStart TimeEnd DateEnd Time
08/20/2005193004/12/20062040
Subject:
SGP/SIRS/E20 - Instrument noise problem
DataStreams:sgpsirs20sE20.a0, sgpsirsE20.00, sgpsirsE20.b1
Description:
Afer recovery from lightening strike the upwelling longwave SIRS Eppley PIR (UIR) has had 
noise on both dome and case thermistor measurements.  On 4/12/2006 techs replaced 
defective j-panel at base of tower.
Measurements:sgpsirsE20.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
  • Instantaneous Case Temperature(inst_up_long_case_temp)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
sgpsirs20sE20.a0:
  • Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
sgpsirsE20.00:
  • null(Raw data stream - documentation not supported)

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

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

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

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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:sgpsirs20sE20.a0, sgpsirsE20.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpsirsE20.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Time offset of tweaks from base_time(time_offset)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
  • Dummy altitude for Zeb(alt)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • lon(lon)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Instantaneous Case Temperature(inst_up_long_case_temp)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Battery Voltage(vBatt)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • lat(lat)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • base time(base_time)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
sgpsirs20sE20.a0:
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Time offset of tweaks from base_time(time_offset)
  • 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)
  • Dummy altitude for Zeb(alt)
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
  • lat(lat)
  • Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
  • lon(lon)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer 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)
  • base time(base_time)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)

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END OF DATA