Solar UV irradiation conditions on the surface of Mars.
作者： Gregorio J. Molina-Cuberos , Charles S. Cockell , Helmut Lammer , Attila Bérces , Manish R. Patel
DOI: 10.1562/0031-8655(2003)077<0034:SUICOT>2.0.CO;2
关键词:
摘要: The UV radiation environment on planetary surfaces and within atmospheres is of importance in a wide range scientific disciplines. Solar driving force chemical organic evolution serves also as constraint biological evolution. In this work we modeled the transmission present early solar from 200 to 400 nm through present-day (3.5 Gyr ago) Martian atmosphere for variety possible cases, including dust loading, observed O3 concentrations. stress microorganisms and/or molecules essential life was estimated by using DNA damaging effects (specifically bacteriophage T7 killing uracil dimerization) various irradiation conditions ancient surface. Our study suggests that irradiance surface 3.5 ago may have been comparable with Earth, though current still quite severe viewpoint, show substantial protection can be afforded under ice.
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