Particle Precipitation Into Jovian and Saturnian Thermosphere and Exosphere

Details Particle Precipitation Into Jovian and Saturnian Thermosphere and Exosphere Particle Precipitation Into Jovian and Saturnian Thermosphere and Exosphere

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p11b1216p&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #P11B-1216

Physics

[0310] Atmospheric Composition And Structure / Airglow And Aurora, [5719] Planetary Sciences: Fluid Planets / Interactions With Particles And Fields, [5729] Planetary Sciences: Fluid Planets / Ionospheres, [6220] Planetary Sciences: Solar System Objects / Jupiter

Scientific paper

We have applied a Monte Carlo particle transport model to study the effects of ion and neutral bombardment in the upper atmospheres of Jupiter and Saturn. A 3-D particle tracking code has been developed and successfully applied to ion precipitation into the terrestrial and Martian mesosphere, lower thermosphere, and ionosphere, which has been readily converted for use at the two giant planets, Jupiter and Saturn. This code will be used in conjunction with existing model results from the Jupiter and Saturn Thermosphere General Circulation Model (J/STGCM) and the BATS-R-US global MHD model to assess the influence of hot ion precipitation on the thermosphere and exosphere of these planets. Magnetospheric protons, He+, and electrons routinely enter and alter the upper atmosphere in the auroral regions. A study of the ionization, excitation, and energy deposition/beam spreading has be conducted. We show results reflecting a robust examination of the influence of energetic ion transport on these gas giant upper atmospheres. It is highly relevant to the definition and scientific return for any future planetary aeronomy missions.

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