The Photochemistry of Methane in the Jovian Atmosphere.

Details The Photochemistry of Methane in the Jovian Atmosphere. The Photochemistry of Methane in the Jovian Atmosphere.

Sep 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969jats...26..906s&link_type=abstract

Journal of Atmospheric Sciences, vol. 26, Issue 5, pp.906-911

Computer Science

24

Scientific paper

The photochemistry of methane in the Jovian atmosphere is reviewed and the photolysis of acetylene, ethylene and ethane is discussed. Approximate photochemical calculations are made for a mixed atmosphere of CH4 and H2 with a CH4 mixing ratio of 103. In regions where diffusion effects axe important, the solutions are modified to include these effects. Ethane is found to he the most abundant hydrocarbon produced in the photolysis of methane and has a mixing ratio on the order of 108 to 107. The densities of CH3, C2H2 and C2H2 are also given as a function of the H2 density.In the model CH4 is irreversibly converted into more complex hydrocarbons. It is suggested that the CH4 abundance is maintained on Jupiter by the downward transport of the more complex hydrocarbons into the hotter regions of the atmosphere where they undergo thermal decomposition to produce methane, which in turn is transported upward to replenish the methane lost in phoatolysis.

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