Assuming that the primitive atmospheres of Mars and earth were similar and that present differences in atmospheres of earth and Mars are a result of their different distances from the sun and their different masses, the atmospheres of the early earth and early Mars were analyzed. A one-dimensional radiative-convective model derived from that of Kasting et al. (1984) and Kasting and Ackerman (1986) was then used to determine if a 1.3-bar CO2 partial pressure on Mars (which is equivalent to about 9 bars on earth) is consistent with the climatic conditions thought to have existed on earth four billion years ago. Results indicate that a dense CO2 atmosphere on early Mars at perihelion is consistent with conditions expected to have existed four billion years ago on earth. Earth would then have had a stable atmosphere with temperatures warm enough to support liquid water on the surface.


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    Titel :

    Comparative analysis of the atmospheres of early earth and early Mars


    Beteiligte:
    Durham, R. (Autor:in) / Schmunk, R. B. (Autor:in) / Chamberlain, J. W. (Autor:in)


    Erscheinungsdatum :

    01.01.1989



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Comparative analysis of the atmospheres of early Earth and early Mars

    Durham, R. / Schmunk, R.B. / Chamberlain, J.W. | Elsevier | 1989


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