Dynamics and Other Processes in Titan's Thermosphere

Details Dynamics and Other Processes in Titan's Thermosphere Dynamics and Other Processes in Titan's Thermosphere

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa22a..06b&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SA22A-06

Other

0545 Modeling (4255), 2427 Ionosphere/Atmosphere Interactions (0335), 5405 Atmospheres (0343, 1060), 6281 Titan

Scientific paper

A 3-D Titan Thermosphere General Circulation Model (TTGCM), ranging from 600km to the exobase (~1450km), has been developed at the University of Michigan. Currently, the TTGCM possesses chemical production and loss terms for (CH4, N2, HCN, H2, and the major hydrocarbons). Additionally, a photochemical ionosphere is present with the major ion species (H2CN+, C2H5+ ), along with selected minor ionic species. The dominant thermal source terms are solar EUV forcing and HCN rotational cooling, which is calculated by a full line-by-line radiative transfer routine In this paper, we explore the effects of altering key physical parameters in Titan's upper atmosphere in order to better understand the physics governing this region. We present the results of these tests, which include, among others, changing primary dynamical parameters, such as Eddy Diffusion, in the TTGCM.

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