Evidence for a Polar Ethane Cloud on Titan-Reference-Cited by-同舟云学术

Evidence for a Polar Ethane Cloud on Titan

Published:2006-09-15 Issue:5793 Volume:313 Page:1620-1622
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Griffith C. A.¹²³⁴⁵,Penteado P.¹²³⁴⁵,Rannou P.¹²³⁴⁵,Brown R.¹²³⁴⁵,Boudon V.¹²³⁴⁵,Baines K. H.¹²³⁴⁵,Clark R.¹²³⁴⁵,Drossart P.¹²³⁴⁵,Buratti B.¹²³⁴⁵,Nicholson P.¹²³⁴⁵,McKay C. P.¹²³⁴⁵,Coustenis A.¹²³⁴⁵,Negrao A.¹²³⁴⁵,Jaumann R.¹²³⁴⁵

Affiliation:

1. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, 85721 USA.

2. Service d'Aéronomie, Université de Versailles-St-Quentin, BP3, 91371 Verriéres le Buisson, France.

3. LaboratoiredePhysiquedel'Université deBourgogne, CNRS UMR 5027, Boîte Postale 47870, F-21078 Dijon, France.

4. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109 USA.

5. U.S. Geological Survey, Denver, CO, 80225 USA.

Abstract

Spectra from Cassini's Visual and Infrared Mapping Spectrometer reveal the presence of a vast tropospheric cloud on Titan at latitudes 51° to 68° north and all longitudes observed (10° to 190° west). The derived characteristics indicate that this cloud is composed of ethane and forms as a result of stratospheric subsidence and the particularly cool conditions near the moon's north pole. Preferential condensation of ethane, perhaps as ice, at Titan's poles during the winters may partially explain the lack of liquid ethane oceans on Titan's surface at middle and lower latitudes.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference35 articles.

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