Time Evolution of Jupiter's Global Thermosphere and Ionosphere

Details Time Evolution of Jupiter's Global Thermosphere and Ionosphere Time Evolution of Jupiter's Global Thermosphere and Ionosphere

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.2226a&link_type=abstract

American Astronomical Society, DPS meeting #28, #22.26; Bulletin of the American Astronomical Society, Vol. 28, p.1146

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present time-dependent, three-dimensional model simulations of Jupiter's thermosphere and lower ionosphere (altitudes between ~ 400 and 2000 km above the 1 B pressure level). Our model numerically solves equations of momentum and energy transport, auroral energy deposition and appropriate ion-molecule chemistry. To simulate Jupiter's aurorae, we introduce particle precipitation, delivering ~ 3 ergs cm(-2) of energy into high-latitude oval-shaped regions. Our simulations cover one rotational cycle. They reveal auroral energy deposition as a major source of thermospheric winds. Electrodynamic forces and Joule heating also play major roles in the evolution of the atmosphere near the auroral regions. We use our simulations to make comments about the efficiency of energy transport between auroral and non-auroral regions; and the influence of the planetary magnetic field on the morphology of the (H_3(+) ) ionosphere.

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