Turnbull, David J. and Parisi, Alfio and Sabburg, Jeff (2003) UV protection provided by public shade structures during winter. In: 2003 Annual Queensland Health and Medical Scientific Meeting, 25-26 Nov 2003, Brisbane, Australia.
Purpose of study: As people become more aware about the damaging effects of UV radiation, they will seek shaded environments to reduce their personal UV exposure. Although shade does decrease direct UV, it is the diffuse UV that can still have significant levels in the shade. At this point in time very little is known about how UV radiation interacts with shade structures during winter. Broadband UV irradiance measurements in the field were conducted beneath three different sized public shade structures, small, medium and large. This research compares the scattered UV levels beneath these specific shade structures, built by the local council, with that of the diffuse UV on an unshaded horizontal plane for clear skies at a sub tropical Southern Hemisphere site during winter. The data gathered is significant, because the relative proportion of scattered UV in shade is at its greatest for the higher solar zenith angles seen during winter.
Conclusions: The public shade structures used in this research are built to be effective in the middle of the day in summer when the sun is at its highest point. In Australia, erythemal UV in full sun can reach levels of approximately 2.5 MED/h or more in the middle of the day during winter. Therefore, it is necessary for people that live in similar latitudes to minimise UV exposure in all climatic conditions throughout the year. These specific shade structures are inadequate for providing the public enough protection against damaging UV radiation.
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|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Speech)|
|Item Status:||Live Archive|
|Additional Information:||Conference publication consists of only the abstracts of papers presented at the conference. Abstract only, posted here.|
|Depositing User:||Dr David Turnbull|
|Faculty / Department / School:||Historic - Faculty of Sciences - Department of Biological and Physical Sciences|
|Date Deposited:||11 Oct 2007 00:35|
|Last Modified:||02 Jul 2013 22:36|
|Uncontrolled Keywords:||shade, ultraviolet radiation, protection|
|Fields of Research :||11 Medical and Health Sciences > 1117 Public Health and Health Services > 111705 Environmental and Occupational Health and Safety
02 Physical Sciences > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
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