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THE MIDDLE ULTRAVIOLET REACHING THE GROUND *
Author(s) -
Green A. E. S.,
Sawada T.,
Shettle E. P.
Publication year - 1974
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1974.tb06508.x
Subject(s) - albedo (alchemy) , ultraviolet , atmosphere (unit) , cloud cover , wavelength , environmental science , radiation , atmospheric sciences , sunlight , ground level , near ultraviolet , irradiance , solar zenith angle , ultraviolet radiation , aerosol , meteorology , physics , optics , chemistry , ground floor , cloud computing , architectural engineering , engineering , art , performance art , computer science , radiochemistry , art history , operating system
— We present a semi‐empirical analytic formula for calculating the direct, diffuse and global solar middle‐ultraviolet radiation (280–340 nm) reaching the ground. The formula accommodates variations in wavelength, solar angle, ozone thickness, aerosol thickness, ground albedo, ground elevation, and cloudiness. Analytic representations of biological action spectra are also presented for use in calculations of effective dose at any time of day. Our purpose is to provide a basis for estimating approximate changes in middle‐ultraviolet radiation levels reaching the ground caused by anthropogenic changes in the intervening atmosphere.