Temperatures, Winds, and Composition in the Saturnian System

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. Satu...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2005-02, Vol.307 (5713), p.1247-1251
Hauptverfasser:	Flasar, F. M, Achterberg, R. K, Conrath, B. J, Pearl, J. C, Bjoraker, G. L, Jennings, D. E, Romani, P. N, Simon-Miller, A. A, Kunde, V. G, Nixon, C. A, Bézard, B, Orton, G. S, Spilker, L. J, Spencer, J. R, Irwin, P. G. J, Teanby, N. A, Owen, T. C, Brasunas, J, Segura, M. E, Carlson, R. C, Mamoutkine, A, Gierasch, P. J, Schinder, P. J, Showalter, M. R, Ferrari, C, Barucci, A, Courtin, R, Coustenis, A, Fouchet, T, Gautier, D, Lellouch, E, Marten, A, Prangé, R, Strobel, D. F, Calcutt, S. B, Read, P. L, Taylor, F. W, Bowles, N, Samuelson, R. E, Abbas, M. M, Raulin, F, Ade, P, Edgington, S, Pilorz, S, Wallis, B, Wishnow, E. H
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomical research Astrophysics Atmosphere Carbon Climate Extraterrestrial Environment Heat Hydrogen Inertia Jupiter Low temperature Lunar And Planetary Science And Exploration Methane Observations Optical thickness Physics Planetary atmospheres Planetary meteorology Planets Research Articles and Reports Rotational spectra Saturn Saturn (Planet) Space exploration Space telescopes Spacecraft Spectral resolution Spectrum Analysis Stratosphere Surface temperature Temperature Thermal radiation Wind
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Beschreibung
Zusammenfassung:	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.
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.1105806