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

Parisi, A. V. and Kimlin, M. G. and Wong, J. C. F. and Wilson, M. (2000) Personal exposure distribution of solar erythemal ultraviolet radiation in tree shade over summer. Physics in Medicine and Biology, 45 (2). pp. 349-356. ISSN 0031-9155

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Abstract

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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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's version deposited according to Publisher's requirements.
Depositing User: Assoc Prof Alfio Parisi
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 11 Oct 2007 00:34
Last Modified: 14 Nov 2013 04:14
Uncontrolled Keywords: non-ionizing; ultraviolet; trees; erythema; dosimeters; shade
Fields of Research (FOR2008): 11 Medical and Health Sciences > 1103 Clinical Sciences > 110304 Dermatology
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
02 Physical Sciences > 0299 Other Physical Sciences > 029904 Synchrotrons; Accelerators; Instruments and Techniques
Socio-Economic Objective (SEO2008): C Society > 92 Health > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920117 Skin and Related Disorders
Identification Number or DOI: doi: 10.1088/0031-9155/45/2/307
URI: http://eprints.usq.edu.au/id/eprint/1083

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