fulltext.study @t Gmail

Evaluation of the cloudy sky solar UVA radiation exposures

Paper ID Volume ID Publish Year Pages File Format Full-Text
30292 44468 2014 5 PDF Available
Title
Evaluation of the cloudy sky solar UVA radiation exposures
Abstract

•Cloud modification factors have been evaluated.•Ratios of UVA to global exposures were also determined.•A model was developed to evaluate the five minute UVA for any cloud conditions.•Comparison of modelled to measured data for all cloud conditions provided an R2 of 0.8.

The influence of cloud on the solar UVA (320–400 nm) exposures over five minute periods on a horizontal plane has been investigated. The first approach used cloud modification factors that were evaluated using the influence of clouds on the global solar exposures (310–2800 nm) and a model developed to apply these to the clear sky UVA exposures to allow calculation of the five minute UVA exposures for any cloud conditions. The second approach established a relationship between the UVA and the global solar exposures. The models were developed using the first six months of data in 2012 for SZA less than or equal to 70° and were applied and evaluated for the exposures in the second half of 2012. This comparison of the modelled exposures for all cloud conditions to the measured data provided an R2 of 0.8 for the cloud modification model, compared to an R2 of 0.7 for the UVA/global model. The cloud modification model provided 73% of the five minute exposures within 20% of the measured UVA exposures. This was improved to 89% of the exposures within 20% of the measured UVA exposures for the cases of cloud with the sun not obscured.

Keywords
Cloud; UVA; Solar radiation; Exposure; Cloud modification factor; Ultraviolet
First Page Preview
Evaluation of the cloudy sky solar UVA radiation exposures
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 138, 5 September 2014, Pages 141–145
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us