Simulating the 3-D Structure of Titan's Upper Atmosphere

Details Simulating the 3-D Structure of Titan's Upper Atmosphere Simulating the 3-D Structure of Titan's Upper Atmosphere

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusm.p11a..04b&link_type=abstract

American Geophysical Union, Spring Meeting 2009, abstract #P11A-04

Physics

0343 Planetary Atmospheres (5210, 5405, 5704), 0355 Thermosphere: Composition And Chemistry, 0358 Thermosphere: Energy Deposition (3369), 1060 Planetary Geochemistry (5405, 5410, 5704, 5709, 6005, 6008), 4255 Numerical Modeling (0545, 0560)

Scientific paper

We present results from the 3-D Titan Global Ionosphere-Thermosphere Model (Bell et al [2009], PSS, in review). We show comparisons between simulated N2, CH4, and H2 density fields and the in-situ data from the Cassini Ion Neutral Mass Spectrometer (INMS). We describe the temperature and wind fields consistent with these density calculations. Variations with local time, longitude, and latitude will be addressed. Potential plasma heating sources can be estimated using the 1-D model of De La Haye et al [2007, 2008] and the impacts on the thermosphere of Titan can be assessed in a global sense in Titan-GITM. Lastly, we will place these findings within the context of recent work in modeling the 2-D structure of Titan's upper atmosphere (Mueller-Wodarg et al [2008]).

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