Personal exposure distribution of solar erythemal ultraviolet radiation in tree shade over summer

Parisi, Alfio V., Kimlin, Michael G., Wong, Joe C., & Wilson, Meegan (2000) Personal exposure distribution of solar erythemal ultraviolet radiation in tree shade over summer. Physics in Medicine and Biology, 45(2), pp. 349-356.

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The personal radiant exposure distribution of solar erythemal UV in tree shade for an upright posture was measured, with measurements over the whole summer for a total of seventeen trees. For each tree, the personal radiant exposure distribution was measured for both the morning and afternoon periods. The exposure ratios averaged over all the trees and over the morning and afternoon periods ranged from 0.16 to 0.49 for the different anatomical sites. A numerical model was employed to estimate the UV radiant exposure to humans in the tree shade over the entire summer. The body sites with the higher exposure ratios in the tree shade were the vertex of the head, shoulders and forearms with radiant exposures over the summer of 1,300 MED to the vertex of the head and 1,100 MED to the shoulders and forearms. These radiant exposures in the shade are substantially higher than the ambient erythemal UV measured in full sun on a horizontal plane over a full summer at a more temperate Northern Hemisphere latitude. The average radiant exposures per day to each anatomical site for a complete day in the tree shade ranged from 4.6 to 14.6 MED. The research has provided new data that is essential to quantify the human UV exposure during outdoor activities.

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23 citations in Scopus
22 citations in Web of Science®
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ID Code: 8218
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal’s website (see hypertext link) or contact the author.
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Keywords: UV, ultraviolet, shade, radiant exposure
DOI: 10.1088/0031-9155/45/2/307
ISSN: 0031-9155
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2000 Institute of Physics
Deposited On: 25 Jun 2007 00:00
Last Modified: 10 Aug 2011 16:44

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