Influence of cloud and solar zenith angle on the diffuse solar erythemal UV short wavelength cut-offs and maximum spectral irradiance wavelengths

Parisi, Alfio V. and Turnbull, David J. and de Byl, Chris and Schouten, Peter and Turner, Joanna and Downs, Nathan (2009) Influence of cloud and solar zenith angle on the diffuse solar erythemal UV short wavelength cut-offs and maximum spectral irradiance wavelengths. Radiation Protection in Australasia, 26 (1). pp. 2-9. ISSN 1444-2752

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Abstract

Cloud and the solar zenith angle (SZA) influence the magnitude of the diffuse erythemal UV. The aim of this research was to investigate the variation of the short wavelength cut-off and the maximum spectral irradiance wavelength for the diffuse spectral erythemal UV. The diffuse spectral solar UV was measured on a horizontal plane at ten minute intervals over a four month period with a UV spectroradiometer for the SZA range of 4.1 to 80 degrees. The short wavelength cut-offs and the maximum spectral irradiance wavelengths of the diffuse erythemal UV did not change significantly with cloud cover. The short wavelength cut-off was influenced by SZA and ranged from 290.5 ± 0.3 nm for the small SZA to 295.1 ± 0.7 nm for the larger SZA. The maximum spectral irradiance wavelength of the diffuse erythemal UV was not influenced significantly for SZA of 40 degrees or less. For higher SZA, the maximum spectral irradiance wavelength of the diffuse erythemal UV increased from 305 nm to 313.9 nm.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Depositing User: Assoc Prof Alfio Parisi
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 21 May 2009 02:40
Last Modified: 02 Jul 2013 23:18
Uncontrolled Keywords: UV; wavelength; diffuse; spectral; skin cancer
Fields of Research (FOR2008): 11 Medical and Health Sciences > 1117 Public Health and Health Services > 111705 Environmental and Occupational Health and Safety
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
04 Earth Sciences > 0401 Atmospheric Sciences > 040106 Cloud Physics
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
URI: http://eprints.usq.edu.au/id/eprint/5221

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