Data Quality Reports for Session: 125036 User: sloehrer Completed: 01/04/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D090514.2SGP/SIRS/E12 - NIP failuresgpsirs20sE12.a0, sgpsirsE12.b1
D090521.1SGP/SIRS/E27 - Reprocess: Incorrect calibration coefficientssgpsirs20sE27.a0, sgpsirsE27.b1
D090522.2SGP/SIRS/E18 - Tracker failuresgpsirs20sE18.a0, sgpsirsE18.b1


DQRID : D090514.2
Start DateStart TimeEnd DateEnd Time
05/06/2009155005/18/20091830
Subject:
SGP/SIRS/E12 - NIP failure
DataStreams:sgpsirs20sE12.a0, sgpsirsE12.b1
Description:
The short_direct_normal values are mostly missing (-9999) starting when the datastream 
came back from an extended period of no data files.  Ops determined the NIP 
(short_direct_normal datastream) instrument had failed and it was replaced.

Values of short_direct_normal can be reconstructed using the following relationship 
applied for each time period:
short_direct_normal = (down_short_hemisp - down_short_diffuse)/cos (zenith angle)
Measurements:sgpsirsE12.b1:
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
sgpsirs20sE12.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)

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DQRID : D090521.1
Start DateStart TimeEnd DateEnd Time
05/20/2009164906/03/20092005
Subject:
SGP/SIRS/E27 - Reprocess: Incorrect calibration coefficients
DataStreams:sgpsirs20sE27.a0, sgpsirsE27.b1
Description:
Logger reverted to previous years configuration, possibly due to power outage and 
non-current logger program in storage module.  Note, the tracker had failed during this period as 
well.

The configurations are as follows:
Correct S/N and coefficients for this station during this time
Diffuse PSP:   33268F3
PSP-US:        30811F3
NIP:           29578E6
PSP-DS:        30903F3
Diffuse PSP: 118.49 W/(m^2*mV)
PSP-US:      116.66 W/(m^2*mV)
NIP:         123.30 W/(m^2*mV)
PSP-DS:      128.92 W/(m^2*mV)

Incorrect S/N and coefficients applied during this time range.
Diffuse PSP:   33366F3
PSP-US:        30961F3
NIP:           29009E6
PSP-DS:        20386F3
Diffuse PSP: 111.68 W/(m^2*mV)
PSP-US:      111.85 W/(m^2*mV)
NIP:         111.03 W/(m^2*mV)
PSP-DS:      104.15 W/(m^2*mV)

Data must be reprocessed for all shortwave instruments; longwave instruments are 
unaffected.  The following corrections must be applied:

down_short_diffuse_hemisp(new) = down_short_diffuse_hemisp(old) * 118.49/111.68
up_short_hemisp(new) = up_short_hemisp(old) * 116.66/111.85
short_direct_normal(new) = short_direct_normal(old) * 123.30 / 111.03
down_short_hemisp(new) = down_short_hemisp(old) * 128.92 / 104.15
Measurements:sgpsirsE27.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
    Deviation(down_short_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
sgpsirs20sE27.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)

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DQRID : D090522.2
Start DateStart TimeEnd DateEnd Time
05/21/2009000006/16/20092217
Subject:
SGP/SIRS/E18 - Tracker failure
DataStreams:sgpsirs20sE18.a0, sgpsirsE18.b1
Description:
The solar tracker was not operating during this time period.  The  short_direct_normal 
(NIP), down_short_diffuse_hemisp (8-48) were affected by the failure and should not be used. 

The PIR instrument should not be affected (down_long_hemisp_shaded) during this time.
Measurements:sgpsirs20sE18.a0:
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)
sgpsirsE18.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • 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)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)

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