Aerosols on the Giant Planets and Titan

Details Aerosols on the Giant Planets and Titan Aerosols on the Giant Planets and Titan

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ssrv..116..185c&link_type=abstract

Space Science Reviews, Volume 116, Issue 1-2, pp. 185-199

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7

Aerosols, Hazes, Particulates, Atmospheres, Giant Planets, Titan

Scientific paper

On the giant planets and Titan, like on the terrestrial planets, aerosols play an important part in the physico-chemistry of the upper atmosphere (P ≤ 0.5 bar). Above all, aerosols significantly affect radiative transfer processes, mainly through light scattering, thus influencing the atmospheric energy budget and dynamics. Because there is usually significant coupling between atmospheric circulation and haze production, aerosols may constitute useful tracers of atmospheric dynamics.More generally, since their production is directly linked to some kind of energy deposition, their study may also provide clues to external sources of energy as well as their variability. Finally, aerosols indirectly influence other processes such as cloud formation and disequilibrium chemistry, by acting either as condensation nuclei or as reaction sites for surface chemistry. Here, I present a review of observational and modeling results based on remote sensing data, and also some insights derived from laboratory simulations. Despite our knowledge of the effects of aerosols in outer planetary atmospheres, however, relatively little is understood about the pathways which produce them, either endogenously (as end-products of gas-phase photochemical or shock reactions) or exogenously (as residues of meteroid ablation).

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