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Saturn: Composition and Chemistry

  • Chapter
Saturn from Cassini-Huygens

Abstract

The chapter reviews our current knowledge of the molecular, elemental, and isotopic composition and atmospheric chemistry in Saturn 's shallow atmosphere, i.e., between the cloud levels and the homopause. We do not restrict the review to Cassini 's results, as past and current ground-based or Earth-based observations are still fundamental to draw a complete picture of the planet. We address the global composition and its importance in studying the origin of the planet, and the meridional and vertical gradients in composition, stressing their insights into Saturn 's dynamics. We present the current 1D thermochemical and photochemical models, how these models fare to reproduce the observed composition, and the first attempts to design 2D chemical models. We present some directions to improve our knowledge of Saturn 's composition both from observations, modelling and laboratory experiments.

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Authors and Affiliations

  1. Observatoire de Paris, LESIA, Meudon, France

    Thierry Fouchet

  2. Lunar and Planetary Institute, Houston, TX, USA

    Julianne I. Moses

  3. Department of Astronomy, Cornell University, Ithaca, NY, USA

    Barney J. Conrath

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  1. Imperial College, The Blackett Laboratory, Prince Consort Road, London, SW7 2AZ, United Kingdom

    Michele K. Dougherty

  2. University of Colorado, Boulder, Boulder CO, 80309-0449, USA

    Larry W. Esposito

  3. Applied Physics Lab, Johns Hopkins University, 11100 John Hopkins Rd, Laurel, MD, 20723, USA

    Stamatios M. Krimigis

  4. Center for Space Research and Technology, Academy of Athens, Soranou Efesiou 4, Athens, 11527, Greece

    Stamatios M. Krimigis

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Fouchet, T., Moses, J.I., Conrath, B.J. (2009). Saturn: Composition and Chemistry. In: Dougherty, M.K., Esposito, L.W., Krimigis, S.M. (eds) Saturn from Cassini-Huygens. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9217-6_5

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