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Solar Ultraviolet R...
Solar Ultraviolet Radiation Exposure Proxy-estimated by Sky View Fish-eye Photography-Potentials and Limitations from an Exploratory Correlation Study
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- Wester, Ulf (författare)
- Swedish Radiat Safety Author, Sweden
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- Pagels, Peter, 1964- (författare)
- Linnéuniversitetet,Institutionen för idrottsvetenskap (ID)
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- Boldemann, Cecilia (författare)
- Karolinska Institutet
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(creator_code:org_t)
- 2018-11-15
- 2019
- Engelska.
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Ingår i: Photochemistry and Photobiology. - : Wiley-Blackwell. - 0031-8655 .- 1751-1097. ; 95:2, s. 656-661
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Potentials and limitations of sky view fish-eye photography and calculation of the percentage of free sky (sky view factor, SVF) as a proxy to estimate solar ultraviolet radiation (UVR) exposure in shade settings are investigated using controlled situations. SVF and measured solar UVR exposure correlated at high mid-latitude (56.65 degrees N) near autumnal equinox in September. The correlation was enhanced by splitting the sky view images into a south- and a north-half and weighting the south-half higher to account for the direct sun. Sky view images from eight different settings with SVF-values 98.3% - 14.9% were compared to exposure measurements by polysulphone film dosimeter badges in the horizontal zenith-, vertical-south-, east-, west- and north-directions and their combinations. The sky view images were un-split and un-weighted or split and the semi-skies given south/north weights (3.0/1.0) or a higher weight ratio (3.5/0.5). Of all tested combinations split sky view SVFs weighted 3.0/1.0 and compared to horizontal (zenith-oriented) dosimeters yielded the highest correlation (R-2 = 0.96). The weight ratio (3.5/0.5) yielded the 2(nd) highest correlation (R-2 = 0.90) both compared to measured horizontal exposure and compared to the horizontal exposure averaged with the vertical-south-oriented exposure. SVF from sky view fish-eye photography may estimate solar UVR exposure in shade settings.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Annan hälsovetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Other Health Sciences (hsv//eng)
Nyckelord
- Idrottsvetenskap
- Sport Science
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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