Methan Rich Archean Atmosphere Supported by New Hydrodynamic Escape Solutions

Details Methan Rich Archean Atmosphere Supported by New Hydrodynamic Escape Solutions Methan Rich Archean Atmosphere Supported by New Hydrodynamic Escape Solutions

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmpp21b1172t&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #PP21B-1172

Physics

0325 Evolution Of The Atmosphere, 0343 Planetary Atmospheres (5405, 5407, 5409, 5704, 5705, 5707)

Scientific paper

Fast escape to space from Archean atmosphere is based on overestimated Jean's escape rate. New solution of hydrodynamic escape produced a much smaller escape rate. This small escape rate suggests that huge hydrogen outgassing rate from interior of the Earth is not necessary to maintain high hydrogen concentration in Archean atmosphere. Since it is easier to maintain high methane concentration in a high hydrogen concentration atmosphere, the new solution of hydrodynamic escape supports methane rich atmosphere in the Archean era.

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