Temperatures, Winds, and Composition in the Saturnian System
Author:
Flasar F. M.12345, Achterberg R. K.12345, Conrath B. J.12345, Pearl J. C.12345, Bjoraker G. L.12345, Jennings D. E.12345, Romani P. N.12345, Simon-Miller A. A.12345, Kunde V. G.12345, Nixon C. A.12345, Bézard B.12345, Orton G. S.12345, Spilker L. J.12345, Spencer J. R.12345, Irwin P. G. J.12345, Teanby N. A.12345, Owen T. C.12345, Brasunas J.12345, Segura M. E.12345, Carlson R. C.12345, Mamoutkine A.12345, Gierasch P. J.12345, Schinder P. J.12345, Showalter M. R.12345, Ferrari C.12345, Barucci A.12345, Courtin R.12345, Coustenis A.12345, Fouchet T.12345, Gautier D.12345, Lellouch E.12345, Marten A.12345, Prangé R.12345, Strobel D. F.12345, Calcutt S. B.12345, Read P. L.12345, Taylor F. W.12345, Bowles N.12345, Samuelson R. E.12345, Abbas M. M.12345, Raulin F.12345, Ade P.12345, Edgington S.12345, Pilorz S.12345, Wallis B.12345, Wishnow E. H.12345
Affiliation:
1. National Aeronautics and Space Administration (NASA)/Goddard Space Flight Center, Code 693, Greenbelt, MD 20771, USA. 2. Science Systems and Applications, Inc., 5900 Princess Garden Parkway, Suite 300, Lanham, MD 20706, USA. 3. Department of Astronomy, Cornell University, Ithaca, NY 14853, USA. 4. Department of Astronomy, University of Maryland, College Park, MD 20742, USA. 5. Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), CNRS–UMR 8109, Observatoire de Paris, 5 place Jules Janssen, F-91925 Meudon Cedex, France.
Abstract
Stratospheric temperatures on Saturn imply a strong decay of the equatorial winds with altitude. If the decrease in winds reported from recent Hubble Space Telescope images is not a temporal change, then the features tracked must have been at least 130 kilometers higher than in earlier studies. Saturn's south polar stratosphere is warmer than predicted from simple radiative models. The C/H ratio on Saturn is seven times solar, twice Jupiter's. Saturn's ring temperatures have radial variations down to the smallest scale resolved (100 kilometers). Diurnal surface temperature variations on Phoebe suggest a more porous regolith than on the jovian satellites.
Publisher
American Association for the Advancement of Science (AAAS)
Subject
Multidisciplinary
Reference30 articles.
1. Cassini infrared Fourier spectroscopic investigation 2. F. M. Flasar et al., Space Sci. Rev.114, 169 (2004). 3. A. P. Ingersoll, R. F. Beebe, B. J. Conrath, G. E. Hunt, in Saturn, T. Gehrels, M. S. Matthews, Eds. (Univ. of Arizona Press, Tucson, 1984), pp. 195–238. 4. Hubble space telescope observations of the 1990 equatorial disturbance on Saturn: Zonal winds and central Meridian albedos 5. A strong decrease in Saturn's equatorial jet at cloud level
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