Jupiter Thermospheric General Circulation Model: Initial Results

Details Jupiter Thermospheric General Circulation Model: Initial Results Jupiter Thermospheric General Circulation Model: Initial Results

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.2227b&link_type=abstract

American Astronomical Society, DPS meeting #28, #22.27; Bulletin of the American Astronomical Society, Vol. 28, p.1146

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It is of great importance to examine the dynamics of the Jupiter thermosphere using a carefully formulated 3-D circulation model (JTGCM). Clearly, the jovian dynamics is dominated by energetic particle precipitation. These inputs are described in detail by the complementary poster by Waite et al. Here, the computational framework adopted for the 3-D JTGCM is outlined. Symmetric energetic particle inputs are assumed (Waite et al.), along with empirically-based hydrocarbon cooling rate formulations (see Drossart et al. 1993). For the initial JTGCM prototype study, the goal is to simulate important zonally-averaged distributions (T, H, He, H2, H2+, H3+, and H+) as a function of latitude above the p = 20-mu bar level. The influences of ion-drag, Joule heating, high latitude ion-drift (non-corotating), and H2 vibrational chemistry are neglected at this stage of JTGCM development. Nevertheless, the systematic modeling approach adopted, employing increasingly complex and realistic processes, will illustrate the relative importance of various dynamical forcings affecting the Jupiter thermosphere. Zonally-averaged JTGCM fields will be presented for this prototype simulation and compared to available Voyager, HST, and Galileo data.

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