Comparison of biologically effective spectra for erythema and pre-vitamin D3 synthesis

Parisi, A. V. and Turnbull, D. J. and Turner, J. (2009) Comparison of biologically effective spectra for erythema and pre-vitamin D3 synthesis. International Journal of Biometeorology, 53 (1). pp. 11-15. ISSN 0020-7128

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Abstract

This paper has compared the short wavelength cut-off and the wavelength of the maximum spectral UV of the spectral pre-vitamin D3 effective solar UV irradiances (UVD3) and the spectral erythemal UV (UVEry) at five minute intervals over a six month period for the range of solar zenith angles (SZA) from 4.7o to 80o. Averaged over the entire period, the short wavelength cut-off for the UVD3 is higher by 1.05 nm than that for UVEry. The maximum spectral UV is higher for the UVD3 compared to the UVEry for SZA less than approximately 50o. For higher SZA (>55°), the ratio of the maximum spectral UV for UVD3 to that for UVEry is less than one. As the erythemal action spectrum extends into the UVA, the ratio of the UVD3 to UVEry irradiances decreases with increasing SZA, along with the decrease in the ratio of the maximum spectral UV for UVD3 compared to UVEry. The changes in short wavelength cut-off and maximum spectral UV influence the respective exposures and to take this into account, a dual calibration technique for polysulphone dosimeters has been developed to simultaneously provide both the personal UVD3 exposures and the UVEry exposures.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's version deposited in accordance with the copyright policy of the publisher (Springer)
Depositing User: Assoc Prof Alfio Parisi
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 03 Mar 2010 20:54
Last Modified: 02 Jul 2013 23:24
Uncontrolled Keywords: pre-vitamin D3; erythema; UV radiation; SZA; short wavelength cut-off
Fields of Research (FOR2008): 11 Medical and Health Sciences > 1199 Other Medical and Health Sciences > 119999 Medical and Health Sciences not elsewhere classified
01 Mathematical Sciences > 0102 Applied Mathematics > 010202 Biological Mathematics
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
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: 10.1007/s00484-008-0186-z
URI: http://eprints.usq.edu.au/id/eprint/5742

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