Sterilisation properties of the Mars surface and atmospheric environment. |
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Authors: | D Moreau C Muller |
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Institution: | Belgian Institute for Space Aeronomy, Belgian Users Support and Operation Centre, Brussels, Belgium. Didier.Moreau@oma.be |
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Abstract: | The radiative and chemical conditions at the surface and in the lower Martian atmosphere are computed at various latitudes and seasons combining a 2D photochemical model and radiation simulations. In most situations, the solar UV B and C radiations reach the surface however, suspended dust and, in polar cases, ozone can constitute an effective UV shield. The daytime and night time concentrations of the sterilizing oxidants: OH, H2O2 and O3 are determined, as well as the concentration of the substances which could influence the metabolism of microorganisms. The possible habitats of a remaining Mar's life as well as the possibilities of contamination by resistant earth life forms will be described. |
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