Intercomparison of Effective Erythemal Irradiance Measurements from Two Types of Broad-Band Instruments during June 1995

Stephen Wengraitis, Danielle Benedetta, David H. Sliney

Research output: Contribution to journalArticlepeer-review

Abstract

The biologically effective global solar ultraviolet radiation (UVR) measurements from a multiband UVR monitor and a conventional broadband UVR monitor are compared. The measurements were performed during the varied weather conditions of June 1995. We compared the daily total exposures measured by both instruments, as well as the ratio of the measured doses throughout the course of each day. The daily total exposures agreed within approximately 11% throughout the month. The ratio between the measured doses held at 1.12 between 0900 and 1700 h (solar zenith angles ≈16-52°). The ratio decreased from 1.12 to 0.90 during the next 90 min outside that period (solar zenith angles ≈52-72°) and decreased further beyond that point. Spectral response and cosine response mismatch between the instruments are discussed as the possible cause of discrepancies between the measured doses. Implications for erythemal irradiance monitoring and suggestions for further study are discussed.

Original languageEnglish (US)
Pages (from-to)179-182
Number of pages4
JournalPhotochemistry and Photobiology
Volume68
Issue number2
StatePublished - Aug 1998
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Biophysics

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