Dynamics of the atmospheres of the outer planets

Details Dynamics of the atmospheres of the outer planets Dynamics of the atmospheres of the outer planets

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992cuni.rept.....g&link_type=abstract

Progress Report Cornell Univ., Ithaca, NY. Dept. of Astronomy.

Astronomy and Astrophysics

Astronomy

Gas Giant Planets, Planetary Atmospheres, Stratification, Stratosphere, Thermodynamics, Identifying, Priorities, Temperature Distribution

Scientific paper

Current knowledge about dynamics and the thermal structure of the outer planets is reviewed with the aim of identifying important measurements which should be made in the post-Voyager era. The existence of jets and cloud bands is the puzzle that underlies all others. The discussion focuses on the particular case of Jupiter because the documentation is the most complete. It is argued that the gross dynamical parameters of the outer planetary atmospheres are the keys to their behaviors, rather than the particular specifics of radiative forcing, cloud distributions, or thermodynamic transformations. Voyager data has shown that the jet systems decay with height in the region above the visible clouds. Therefore, the highest priority must be given to establishing dynamical parameters that characterize levels within and beneath the clouds. These require the determination of the deep structure of the jets, of the density stratification, and of the horizontal density contrasts. The deep regions are not easily accessible and these measurements present challenging opportunities. Indirect inferences about the controlling processes may sometimes be possible by observing waves and other activity in the more easily accessible stratosphere.

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