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Jupiter's atmospheric composition from the Cassini thermal infrared spectroscopy experiment |
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| Authors: | Kunde V G Flasar F M Jennings D E Bézard B Strobel D F Conrath B J Nixon C A Bjoraker G L Romani P N Achterberg R K Simon-Miller A A Irwin P Brasunas J C Pearl J C Smith M D Orton G S Gierasch P J Spilker L J Carlson R C Mamoutkine A A Calcutt S B Read P L Taylor F W Fouchet T Parrish P Barucci A Courtin R Coustenis A Gautier D Lellouch E Marten A Prangé R Biraud Y Ferrari C Owen T C Abbas M M Samuelson R E Raulin F Ade P Césarsky C J Grossman K U Coradini A |
| Institution: | Department of Astronomy, University of Maryland, College Park, MD 20742, USA. Virgil.G.Kunde.1@gsfc.nasa.gov |
| 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. |
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