Sabburg, J. and Parisi, A. V. and Wong, J. C. F. (2001) Effect of cloud on UVA and exposure to humans. Photochemistry and Photobiology, 74 (3). pp. 412-416. ISSN 0031-8655
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Abstract
The daily autumn and winter UVA exposures and 6-minute UVA irradiance data for a Southern Hemisphere, subtropical site (Toowoomba, Australia, 27.6 S, 151.9 E) are presented. This data is used to quantify the effect of cloud on UVA using an integrated sky-camera and radiation system. Additionally, an estimate of the effect of enhanced UVA exposure on humans is made. The measurement system consisted of broadband visible-infrared and UVA sensors together with a sun tracking, wide-angle video camera. The mean daily June exposure was found to be 409 kJm-2. Under the constraints of the uncertainty of both the UVA measurement system and clear-sky model, one case of enhanced UVA irradiance was found. Three cases of cloud enhancement of daily UVA exposure, approaching clear-sky levels, were also determined using a calculated clear-sky envelope. It was also determined that for a fulltime outdoor worker, the additional UVA exposure could approach approximately that of one third of a full winter's day. For indoor workers with an outside lunch break of noon to 1 pm, the additional UVA exposure was on average 6.9 kJm-2 over three cloud enhanced days. To the authors' knowledge this is the first paper to present some evidence of cloud enhanced UVA human exposure.
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Item Type: | Article (Commonwealth Reporting Category C) |
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Refereed: | Yes |
Item Status: | Live Archive |
Additional Information: | Author's version deposited according to Publisher's requirements. |
Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Biological and Physical Sciences (Up to 30 Jun 2013) |
Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Biological and Physical Sciences (Up to 30 Jun 2013) |
Date Deposited: | 11 Oct 2007 00:48 |
Last Modified: | 27 Sep 2016 04:48 |
Uncontrolled Keywords: | UVA; enhancement; cloud; solar; skin cancer; exposure |
Fields of Research (2008): | 10 Technology > 1004 Medical Biotechnology > 100402 Medical Biotechnology Diagnostics (incl. Biosensors) 04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation 04 Earth Sciences > 0401 Atmospheric Sciences > 040106 Cloud Physics |
Socio-Economic Objectives (2008): | E Expanding Knowledge > 97 Expanding Knowledge > 970104 Expanding Knowledge in the Earth Sciences |
Identification Number or DOI: | https://doi.org/10.1562/0031-8655(2001)074<0412:EOCOUA>2.0.CO;2 |
URI: | http://eprints.usq.edu.au/id/eprint/1608 |
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