Data Quality Reports for Session: 115596 User: sherman Completed: 11/09/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040320.2SGP/SIRS/E8 - Possible Contamination of DS PSP instrumentsgpsirs20sE8.a0, sgpsirsE8.00, sgpsirsE8.b1
D040831.3SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficientssgpsirsE8.00, sgpsirsE8.b1
D050131.28SGP/SIRS/E8 - Ice stormsgpsirs20sE8.a0, sgpsirsE8.b1
D050801.1SGP/SIRS/E8 - Downwelling Shortwave hemispheric (PSP) Dome Contaminationsgpsirs20sE8.a0, sgpsirsE8.00, sgpsirsE8.b1
D060630.16SGP/SIRS/E8 - Reprocessed: Longwave Calibration errorsgpsirsE8.b1
D061208.1SGP/SIRS/E7 - Instrument noisesgpsirs20sE7.a0, sgpsirsE7.b1
D070411.2SGP/SIRS/E7 - SIRS Power supply problemssgpsirs20sE7.a0, sgpsirsE7.00, sgpsirsE7.b1
D070814.1SGP/SIRS/E7 - Downwelling shortwave data dropoutssgpsirs20sE7.a0, sgpsirsE7.b1


DQRID : D040320.2
Start DateStart TimeEnd DateEnd Time
03/15/2004150003/31/20041200
Subject:
SGP/SIRS/E8 - Possible Contamination of DS PSP instrument
DataStreams:sgpsirs20sE8.a0, sgpsirsE8.00, sgpsirsE8.b1
Description:
Downwelling hemispheric shortwave values drop at about 1500 GMT under clear sky 
conditions, typically from about 14:00GMT to 16:00GMT.  This may be due to a dirty PSP but 
maintenance on 03/23/04 18:11 GMT revealed no more than typical light dust.  The problem was 
essentially undetectable by  03/31/04 12:00. The time of day that the problem exists appears 
to be an exagerated PSP cosine response.  No obvious reason presents why the problem 
appeared and then disappeared within this two week period.
Measurements:sgpsirsE8.00:
  • null(Raw data stream - documentation not supported)
sgpsirs20sE8.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsE8.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)

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DQRID : D040831.3
Start DateStart TimeEnd DateEnd Time
02/10/2004182504/20/20041825
Subject:
SGP/SIRS/E8  - Reprocess: Incorrect shortwave radiometer calibration coefficients
DataStreams:sgpsirsE8.00, sgpsirsE8.b1
Description:
During the pyrgeometer instrument (PIR) changeout a datalogger program was loaded with 
incorrect calibration coefficients for the shortwave instruments.  The affected measurements 
(instruments) were: downwelling diffuse (8-48), upwelling shortwave (PSP), direct normal 
(NIP) and downwelling shortwave (PSP)

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)*116.37
US(corrected) = (US/113.19)*121.78
NIP(corrected)= (NIP/120.17)*122.47
DS(corrected) = (DS/118.46)*122.34
Measurements:sgpsirsE8.00:
  • null(Raw data stream - documentation not supported)
sgpsirsE8.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)

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DQRID : D050131.28
Start DateStart TimeEnd DateEnd Time
01/04/2005210201/11/20051943
Subject:
SGP/SIRS/E8 - Ice storm
DataStreams:sgpsirs20sE8.a0, sgpsirsE8.b1
Description:
Data missing due to ice storm.
Measurements:sgpsirs20sE8.a0:
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
  • Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • lon(lon)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)
sgpsirsE8.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Instantaneous Case Temperature(inst_up_long_case_temp)
  • base time(base_time)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • lon(lon)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
  • lat(lat)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Dummy altitude for Zeb(alt)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Battery Voltage(vBatt)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Time offset of tweaks from base_time(time_offset)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)

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DQRID : D050801.1
Start DateStart TimeEnd DateEnd Time
07/27/2005193008/09/20051940
Subject:
SGP/SIRS/E8 - Downwelling Shortwave hemispheric (PSP) Dome Contamination
DataStreams:sgpsirs20sE8.a0, sgpsirsE8.00, sgpsirsE8.b1
Description:
The downelling shortwave hemispheric instrument (Eppley PSP) dome at this site had dirt or 
a smudge on it.  This was most noticeable during mid to late afternoon hours (around 
2100 GMT).  PM cleaned the dome on 8/9/05 1940, correcting the problem.
Measurements:sgpsirsE8.00:
  • null(Raw data stream - documentation not supported)
sgpsirs20sE8.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsE8.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)

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DQRID : D060630.16
Start DateStart TimeEnd DateEnd Time
02/10/2004184502/21/20061840
Subject:
SGP/SIRS/E8 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE8.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:sgpsirsE8.b1:
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)

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DQRID : D061208.1
Start DateStart TimeEnd DateEnd Time
10/31/2006060012/12/20062105
Subject:
SGP/SIRS/E7 - Instrument noise
DataStreams:sgpsirs20sE7.a0, sgpsirsE7.b1
Description:
Beginning around 10/31, the E7 UIR experienced an increasingly noisy signal.  The 
thermopile signal was noisy, but case and dome thermistors are well behaved.  Maintenance 
reseated the UIR cable connections on 12/12/2006 which effectively eliminated the UIR noise.

The thermopile data from the upwelling pyrgeometer is noisy with resulting irradiance 
variations of up to 5 W/m2, but doesn't appear to have a bias.
Measurements:sgpsirs20sE7.a0:
  • Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
sgpsirsE7.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Instantaneous Case Temperature(inst_up_long_case_temp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D070411.2
Start DateStart TimeEnd DateEnd Time
03/05/2007143003/10/20071500
03/22/2007140003/26/20071830
Subject:
SGP/SIRS/E7 - SIRS Power supply problems
DataStreams:sgpsirs20sE7.a0, sgpsirsE7.00, sgpsirsE7.b1
Description:
Power supply problems to SIRS datalogger resulted in logger voltage dropping below minimum 
for operation.  During these time ranges the datalogger was either not operating or 
operating intermittantly as battery voltage would go above and below logger voltage threshold 
of approx 9VDC.
Measurements:sgpsirs20sE7.a0:
  • Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)
  • Dummy altitude for Zeb(alt)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • base time(base_time)
  • lon(lon)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • lat(lat)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
sgpsirsE7.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • lat(lat)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Instantaneous Case Temperature(inst_up_long_case_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • Battery Voltage(vBatt)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • lon(lon)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
    Deviation(up_long_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Dummy altitude for Zeb(alt)
sgpsirsE7.00:
  • null(Raw data stream - documentation not supported)

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DQRID : D070814.1
Start DateStart TimeEnd DateEnd Time
08/12/2007190609/04/20071940
Subject:
SGP/SIRS/E7 - Downwelling shortwave data dropouts
DataStreams:sgpsirs20sE7.a0, sgpsirsE7.b1
Description:
The down_short_hemisp data was dropping out to negative numbers and had high negative 
offsets.  PM techs reseated the cable connections and found the ventilator fan had failed.
Measurements:sgpsirs20sE7.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsE7.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, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)

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