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ANNUAL EXPOSURES TO CARCINOGENIC RADIATION FROM THE SUN AT DIFFERENT LATITUDES and AMPLIFICATION FACTORS RELATED TO OZONE DEPLETION. THE USE OF DIFFERENT GEOMETRICAL REPRESENTATIONS OF THE SKIN SURFACE RECEIVING THE ULTRAVIOLET RADIATION
Author(s) -
Dahlback Arne,
Moan Johan
Publication year - 1990
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.1751-1097.1990.tb01820.x
Subject(s) - radiation , surface (topology) , carcinogen , latitude , plane (geometry) , radiation flux , irradiation , flux (metallurgy) , physics , geometry , optics , materials science , chemistry , mathematics , astronomy , organic chemistry , nuclear physics , metallurgy
— In most calculations of annual fluences of carcinogenic light as well as of the radiation amplification factor and of biological amplification factors associated with ozone depletions, the radiation is assumed to fall on a horizontally oriented plane surface. This is obviously a bad approximation of the surface of the human body. In order to evaluate the importance of using a realistic geometric representation of the surface of the human body we here present calculations of the flux of carcinogenically effective radiation falling on three different bodies: a vertically standing cylinder, a sphere and a horizontally oriented surface. The exposure to carcinogenic radiation depends strongly on the surface geometry. However we find that the radiation amplification factors are almost independent of the surface geometry chosen. The biological amplification factors for the three geometrical representations are also similar to within 20%. The total amplification factor for the increase in the incidence of non‐melanoma skin cancer related to ozone depletion is about 17% larger when a cylindrical representation is used compared to when a plane horizontal surface is considered.