Journal article
Penetration of solar erythemal UV radiation in the shade of two common Australian trees
Health Physics, Vol.76(Supplement 6), pp.682-686
1999
Abstract
The penetration of solar erythemal ultraviolet radiation has been measured in the shade of a gum (Eucalyptus sp.) and a she oak (Casaurina) tree, both on a horizontal plane and with polysulphone dosimeters to human anatomical sites. This has provided new data useful for protection strategies against harmful ultraviolet radiation. For larger solar zenith angles, the relative penetration of solar erythemal ultraviolet in the shade of the trees is higher. On a horizontal plane, at noon, in winter, the shade erythemal ultraviolet ranged from 44 to 55% of that in the sun whereas in spring it ranged from 29 to 37% of the irradiances in the sun. Similarly, at 9:00 EST and 15:00 EST, the shade erythemal ultraviolet in winter ranged from 51 to 81% of the irradiances in the sun whereas in spring and summer they ranged from 35 to 51% of the unshaded irradiances. The shade ratios for specific body sites provided by the shade of the two trees were 0.05 to 0.45 for the solar zenith angles in this research. The shade ratios ranged from 0.14 to 0.45 for the gum tree and from 0.05 to 0.28 for the she oak. The denser foliage of the she oak provided higher ultraviolet protection compared to that of the gum tree.
Details
- Title
- Penetration of solar erythemal UV radiation in the shade of two common Australian trees
- Authors
- A V Parisi (Author) - University of Southern QueenslandA Willey (Author) - University of Southern QueenslandMichael G Kimlin (Author) - University of Southern QueenslandJ C F Wong (Author) - Queensland University of Technology
- Publication details
- Health Physics, Vol.76(Supplement 6), pp.682-686
- Publisher
- Lippincott Williams & Wilkins
- Date published
- 1999
- DOI
- 10.1097/00004032-199906000-00012
- ISSN
- 0017-9078; 0017-9078
- Copyright note
- Copyright © 1999 Lippincott, Williams & Wilkins. This accepted manuscript is reproduced here in accordance to the publisher's copyright policy. The definitive version is available from http://www.lww.com
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy
- Language
- English
- Record Identifier
- 99449571202621
- Output Type
- Journal article
- Research Statement
- false
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