Jupiter's Atmospheric Composition from the Cassini Thermal Infrared Spectroscopy Experiment

Author:

Kunde V. G.12345,Flasar F. M.12345,Jennings D. E.12345,Bézard B.12345,Strobel D. F.12345,Conrath B. J.12345,Nixon C. A.12345,Bjoraker G. L.12345,Romani P. N.12345,Achterberg R. K.12345,Simon-Miller A. A.12345,Irwin P.12345,Brasunas J. C.12345,Pearl J. C.12345,Smith M. D.12345,Orton G. S.12345,Gierasch P. J.12345,Spilker L. J.12345,Carlson R. C.12345,Mamoutkine A. A.12345,Calcutt S. B.12345,Read P. L.12345,Taylor F. W.12345,Fouchet T.12345,Parrish P.12345,Barucci A.12345,Courtin R.12345,Coustenis A.12345,Gautier D.12345,Lellouch E.12345,Marten A.12345,Prangé R.12345,Biraud Y.12345,Ferrari C.12345,Owen T. C.12345,Abbas M. M.12345,Samuelson R. E.12345,Raulin F.12345,Ade P.12345,Césarsky C. J.12345,Grossman K. U.12345,Coradini A.12345

Affiliation:

1. Department of Astronomy, University of Maryland, College Park, MD 20742, USA.

2. NASA/Goddard Space Flight Center, Code 693, Greenbelt, MD 20771, USA.

3. LESIA, CNRS-UMR8109, Observatoire de Paris, 5 place Jules Janssen, F-91925 Meudon Cedex, France.

4. Johns Hopkins University, Department of Earth and Planetary Science, Baltimore, MD 21218, USA.

5. Department of Astronomy, Cornell University, Ithaca, NY 14853, USA.

Abstract

The Composite Infrared Spectrometer observed Jupiter in the thermal infrared during the swing-by of the Cassini spacecraft. Results include the detection of two new stratospheric species, the methyl radical and diacetylene, gaseous species present in the north and south auroral infrared hot spots; determination of the variations with latitude of acetylene and ethane, the latter a tracer of atmospheric motion; observations of unexpected spatial distributions of carbon dioxide and hydrogen cyanide, both considered to be products of comet Shoemaker-Levy 9 impacts; characterization of the morphology of the auroral infrared hot spot acetylene emission; and a new evaluation of the energetics of the northern auroral infrared hot spot.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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