Indoor and Outdoor Spectroradiometer Intercomparison for Spectral Irradiance Measurement

Aron Habte, Afshin Andreas, Laurence Ottoson, Chris Gueymard, Greg edor, Sean Fowler, Josh Peterson, Erik Naranen, Tsukasa Kobashi, Akihito Akiyama, Shin Takagi

Research output: NRELTechnical Report


This report details the global spectral irradiance intercomparison using spectroradiometers that was organized by the National Renewable Energy Laboratory's Solar Radiation Research Laboratory. The intercomparison was performed both indoors and outdoors on September 17, 2013. Five laboratories participated in the intercomparison using 10 spectroradiometers, and a coordinated measurement setup and a common platform were employed to compare spectral irradiances under both indoor and outdoor conditions. The intercomparison aimed to understand the performance of the different spectroradiometers and to share knowledge in making spectral irradiance measurements. This intercomparison was the first of its kind in the United States.
Original languageAmerican English
Number of pages29
StatePublished - 2014

NREL Publication Number

  • NREL/TP-5D00-61476


  • global spectral irradiance
  • National Renewable Energy Laboratory (NREL)
  • NREL
  • Solar Radiation Research Laboratory
  • spectroradiometers
  • SRRL


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