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
National Aeronautics and Space Administration (NASA)/Goddard Space Flight Center, Code 693, Greenbelt, MD 20771, USA.
Science. 2005 Feb 25;307(5713):1247-51. doi: 10.1126/science.1105806. Epub 2004 Dec 23.
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.
土星平流层的温度表明赤道风随高度急剧衰减。如果近期哈勃太空望远镜图像所报告的风的减弱不是暂时变化,那么所追踪的特征必定比早期研究中的特征至少高出130公里。土星南极平流层比简单辐射模型预测的温度更高。土星上的碳氢比是太阳的7倍,是木星的2倍。土星环的温度在可分辨的最小尺度(100公里)上存在径向变化。土卫九的昼夜表面温度变化表明其风化层比木星卫星的风化层孔隙更多。