Variation of the enhanced biologically damaging solar UV due to clouds

Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology
Alfio V Parisi, Nathan Downs

Abstract

The variation of the biologically damaging solar UV (UVBE) enhanced by clouds above that of clear sky UVBE has been investigated. This was undertaken for summer through to winter for SZA of 5 to 60 degrees employing an integrated automatic cloud and spectral UV measurement system that recorded the solar UV spectra and the sky images at five minute intervals. The UVBE calculated with action spectra with higher relative effectiveness in the UVA produced the lower percentage of cloud enhanced cases. The DNA UVBE provided the highest percentage of cloud enhanced cases compared to the total number of UV scans with 2.2% cloud enhanced cases. As a comparison, the plant and fish melanoma UVBE provided the lowest percentage of cloud enhanced cases with 0.6 to 0.8% cloud enhanced cases. For the cases of cloud enhanced UVBE, the average ratio of the measured UVBE to calculated cloud free UVBE for the photokeratitis, cataracts, plant, generalized plant damage and fish melanoma action spectra was 1.21 to 1.25. In comparison, the highest value of 1.4 was for the DNA action spectrum.

Citations

Jul 17, 2004·International Journal of Biometeorology·A V Parisi, N Downs
Oct 28, 2005·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·A V ParisiJ Macaranas
Mar 8, 2006·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·A V Parisi, J Turner
Mar 9, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·D-P HäderR C Worrest
Jan 29, 2013·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Abel A Silva
Mar 12, 2013·Journal of Photochemistry and Photobiology. B, Biology·Lisa WainwrightPeter Schouten
Nov 23, 2018·Photochemistry and Photobiology·Abel A SilvaMarcelo P Corrêa
Jun 8, 2006·Physics in Medicine and Biology·A V ParisiM G Kimlin
Mar 9, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·M NorvalJ C van der Leun
Nov 30, 2006·Photochemistry and Photobiology·Alfio V ParisiMichael G Kimlin

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