Measurement and Analysis of Near Ultraviolet Solar Radiation

Mark Mehos, Kimberly Pacheco, Hal Link

Research output: Contribution to conferencePaperpeer-review

10 Scopus Citations


Measurements of direct-normal and global-horizontal ultraviolet (280-385 nm) and full-spectrum (280-4000 nm) solar radiation taken in Golden, Colorado over a one-year period are analyzed, and comparisons are made with data generated from a clear-sky solar radiation model (BRITE) currently in use for predicting the performance of solar detoxification processes. Analysis of the data indicates a ratio of global-horizontal ultraviolet to full-spectrum radiation of 4%-6% that is weakly dependent on air mass. Conversely, data for direct-normal ultraviolet radiation indicate a much larger dependence on air mass, with a ratio of approximately 5% at low air mass to 1% at higher air masses. Results show excellent agreement between the measured data and clear-sky predictions for both the ultraviolet and the full-spectrum global-horizontal radiation. For the direct-normal components, however, the tendency is for the clear-sky model to underpredict the measured data. Averaged monthly ultraviolet radiation available for the detoxification process indicates that the global-horizontal component of the radiation exceeds the direct-normal component throughout the year.

Original languageAmerican English
Number of pages5
StatePublished - 1992
Event1992 ASME-JSES-KSES International Solar Energy Conference Part 1 (of 2) - Maui, HI, USA
Duration: 5 Apr 19929 Apr 1992


Conference1992 ASME-JSES-KSES International Solar Energy Conference Part 1 (of 2)
CityMaui, HI, USA

NREL Publication Number

  • ACNR/CP-14946


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