Photochemistry in Outer Solar System Atmospheres |
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| Authors: | Darrell F Strobel |
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| Institution: | (1) Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA;(2) Department of Earth and Planetary Sciences, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA |
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| Abstract: | The photochemistries of the H2-He atmospheres of the gas giants Jupiter, Saturn and ice giants Uranus and Neptune and Titan’s mildly reducing N2 atmosphere are reviewed in terms of general chemical and physical principles. The thermochemical furnace regions in the deep
atmospheres and the photochemical regions of the giant planets are coupled by vertical mixing to ensure efficient recyling
of photochemical products. On Titan,mass loss of hydrogen ensures photochemical evolution of methane into less saturated hydrocarbons.
A summary discussion of major dissociation paths and essential chemical reactions is given. The chapter ends with a overview
of vertical transport processes in planetary atmospheres. |
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| Keywords: | planetary atmospheres photochemistry |
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