Titan's Atmospheric Temperatures, Winds, and Composition-Reference-Cited by-同舟云学术

Titan's Atmospheric Temperatures, Winds, and Composition

Published:2005-05-13 Issue:5724 Volume:308 Page:975-978
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Flasar F. M.¹²³⁴⁵,Achterberg R. K.¹²³⁴⁵,Conrath B. J.¹²³⁴⁵,Gierasch P. J.¹²³⁴⁵,Kunde V. G.¹²³⁴⁵,Nixon C. A.¹²³⁴⁵,Bjoraker G. L.¹²³⁴⁵,Jennings D. E.¹²³⁴⁵,Romani P. N.¹²³⁴⁵,Simon-Miller A. A.¹²³⁴⁵,Bézard B.¹²³⁴⁵,Coustenis A.¹²³⁴⁵,Irwin P. G. J.¹²³⁴⁵,Teanby N. A.¹²³⁴⁵,Brasunas J.¹²³⁴⁵,Pearl J. C.¹²³⁴⁵,Segura M. E.¹²³⁴⁵,Carlson R. C.¹²³⁴⁵,Mamoutkine A.¹²³⁴⁵,Schinder P. J.¹²³⁴⁵,Barucci A.¹²³⁴⁵,Courtin R.¹²³⁴⁵,Fouchet T.¹²³⁴⁵,Gautier D.¹²³⁴⁵,Lellouch E.¹²³⁴⁵,Marten A.¹²³⁴⁵,Prangé R.¹²³⁴⁵,Vinatier S.¹²³⁴⁵,Strobel D. F.¹²³⁴⁵,Calcutt S. B.¹²³⁴⁵,Read P. L.¹²³⁴⁵,Taylor F. W.¹²³⁴⁵,Bowles N.¹²³⁴⁵,Samuelson R. E.¹²³⁴⁵,Orton G. S.¹²³⁴⁵,Spilker L. J.¹²³⁴⁵,Owen T. C.¹²³⁴⁵,Spencer J. R.¹²³⁴⁵,Showalter M. R.¹²³⁴⁵,Ferrari C.¹²³⁴⁵,Abbas M. M.¹²³⁴⁵,Raulin F.¹²³⁴⁵,Edgington S.¹²³⁴⁵,Ade P.¹²³⁴⁵,Wishnow E. H.¹²³⁴⁵

Affiliation:

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

2. Science Systems and Applications, 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'Études Spatiales et d'Instrumentation en Astrophysique (LESIA), CNRS–Unité Mixte de Recherche (UMR) 8109, Observatoire de Paris, 5 place Jules Janssen, F-91925 Meudon Cedex, France.

Abstract

Temperatures obtained from early Cassini infrared observations of Titan show a stratopause at an altitude of 310 kilometers (and 186 kelvin at 15°S). Stratospheric temperatures are coldest in the winter northern hemisphere, with zonal winds reaching 160 meters per second. The concentrations of several stratospheric organic compounds are enhanced at mid- and high northern latitudes, and the strong zonal winds may inhibit mixing between these latitudes and the rest of Titan. Above the south pole, temperatures in the stratosphere are 4 to 5 kelvin cooler than at the equator. The stratospheric mole fractions of methane and carbon monoxide are (1.6 ± 0.5) × 10 -2 and (4.5 ± 1.5) × 10 -5 , respectively.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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