Simulations of Convective Clouds at Titan's South Pole using the Titan Regional Atmospheric Modeling System (TRAMS)

Details Simulations of Convective Clouds at Titan's South Pole using the Titan Regional Atmospheric Modeling System (TRAMS) Simulations of Convective Clouds at Titan's South Pole using the Titan Regional Atmospheric Modeling System (TRAMS)

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.3206b&link_type=abstract

American Astronomical Society, DPS meeting #38, #32.06; Bulletin of the American Astronomical Society, Vol. 38, p.544

Astronomy and Astrophysics

Astronomy

Scientific paper

Convective clouds on Titan may play an important role in climate dynamics, atmospheric chemistry, and the overall volatile cycle. To study the formation and evolution of these clouds, we have developed the Titan Regional Atmospheric Modeling System (TRAMS). TRAMS is a three-dimensional, time-dependent, coupled dynamic and microphysical model capable of simulating methane, ethane, and mixed methane-ethane clouds in Titan's atmosphere. Initial tests, where a warm bubble is used to trigger an air parcel to rise, indicate that for a methane profile similar to that derived from the Voyager observations (e.g. 60% surface humidity), convection occurs producing a cloud with a top between 25 and 30 km, while for a dryer environment characteristic of the Huygens landing site, only thin stratiform clouds are produced. We are now at a point to begin exploring possible trigger mechanisms for lifting the air parcel and will present results to characterize the ability of surface heating as a trigger for convection.
This work was supported by Southwest Research Institute internal research funding.

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