Physics
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..697g&link_type=abstract
European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a
Physics
Scientific paper
For the past 8 years, methane clouds have appeared primarily within 30 degrees of the south pole, and in a band centered at 40S latitude, where updrafts are predicted in Titan's circulation. The association of clouds with rising circulation branches is also seen on Earth. But unlike Earth, Titan's circulation is expected to change dramatically with season, with the roughly pole-to-pole circulation flipping such that rising branches occur in the summer hemisphere. Titan is currently approaching equinox, which will occur in 2010. Ground-based and Cassini observations indicate an increasingly greater prevalence of clouds in Titan's tropical atmosphere. These clouds are of interest not only because they are newcomers, and may manifest seasonal variations in Titan's atmosphere, but also because they occur very close to the Huygens landing site, where the methane and temperature profiles have been determined. Here we discuss radiative transfer derivation of the structure of Titan's tropical clouds, detected from VIMS observations, in concert with the structural information of the atmosphere, determined from Huygens observations, to understand the clouds' origins.
Griffith Caitlin
Le Mouélic Stéphane
Penteado Paulo
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