The Vertical Structure of Titan's Upper Atmosphere

Details The Vertical Structure of Titan's Upper Atmosphere The Vertical Structure of Titan's Upper Atmosphere

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusm.p34a..01y&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #P34A-01

Other

5704 Atmospheres: Composition And Chemistry, 5707 Atmospheres: Structure And Dynamics, 5709 Composition, 5719 Interactions With Particles And Fields

Scientific paper

We present the analysis of data acquired by the Cassini Ion Neutral Mass Spectrometer (INMS) during the close flyby of Titan on 26 October (TA) and to be acquired during the close flyby on 15 April 2005 (T5). Closest approach to Titan for TA occurred at an altitude of 1174 km, a latitude of 38.6 degrees and a local time of 16.75 hours, i.e. quite close to the terminator. Closest approach for T5 is planned to occur at an altitude of 1025 km, a latitude of 74 degrees, and a local time of 23 hours, i.e. close to midnight. The data from TA indicate that the upper atmosphere is isothermal at a temperature of 148 K, the eddy diffusion coefficient is 5E9 cm2s-1, and the H2 escape flux is 6E9 cm-2s-1, referred to the surface. A similar analysis will be presented for T5 data.

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