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Annual solar UV exposure and biological effective dose rates on the Martian surface

Patel, Manish; Berces, A.; Kerekgyarto, T.; Ronto, G.; Lammer, H. and Zarnecki, John (2004). Annual solar UV exposure and biological effective dose rates on the Martian surface. Advances in Space Research, 33(8) pp. 1247–1252.

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The ultraviolet (UV) environment of Mars has been investigated to gain an understanding of the variation of exposure throughout a Martian year, and link this flux to biological effects and possible survival of organisms at the Martian surface. To gain an idea of how the solar UV radiation varies between different regions, including planned landing sites of two future Mars surface missions, we modelled the total solar UV surface flux throughout one Martian year for two different dust scenarios. To understand the degree of solar UV stress on micro-organisms and/or molecules essential for life on the surface of Mars, we also calculated the biologically effective dose (BED) for T7 and Uracil in relevant wavelength regions at the Martian surface as a function of season and latitude, and discuss the biological survival rates in the presence of Martian solar UV radiation. High T7/Uracil BED ratios indicate that even at high latitudes where the UV flux is significantly reduced, the radiation environment is still hostile for life due to the persisting UV-C component of the flux.

Item Type: Article
ISSN: 0273-1177
Keywords: Astrobiology; Martian surface; Annual solar UV exposure; Biological effective dose rates
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 5382
Depositing User: Users 6044 not found.
Date Deposited: 25 Aug 2006
Last Modified: 09 Nov 2016 16:20
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