Effect of cloud on UVA and exposure to humans
Article
Article Title | Effect of cloud on UVA and exposure to humans |
---|---|
ERA Journal ID | 15283 |
Article Category | Article |
Authors | Sabburg, J. (Author), Parisi, A. V. (Author) and Wong, J. C. F. (Author) |
Journal Title | Photochemistry and Photobiology |
Journal Citation | 74 (3), pp. 412-416 |
Number of Pages | 5 |
Year | 2001 |
Publisher | John Wiley & Sons |
Place of Publication | United States |
ISSN | 0031-8655 |
1751-1097 | |
Digital Object Identifier (DOI) | https://doi.org/10.1562/0031-8655(2001)0740412EOCOUA2.0.CO2 |
Web Address (URL) | http://onlinelibrary.wiley.com/doi/10.1562/0031-8655(2001)0740412EOCOUA2.0.CO2/pdf |
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. |
Keywords | UVA; enhancement; cloud; solar; skin cancer; exposure |
ANZSRC Field of Research 2020 | 320602. Medical biotechnology diagnostics (incl. biosensors) |
370106. Atmospheric radiation | |
370107. Cloud physics | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Centre for Astronomy, Solar Radiation and Climate |
Queensland University of Technology |
https://research.usq.edu.au/item/9xyqq/effect-of-cloud-on-uva-and-exposure-to-humans
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