Fossils of Cloud Layers in the Galileo Probe Entry Site

Details Fossils of Cloud Layers in the Galileo Probe Entry Site Fossils of Cloud Layers in the Galileo Probe Entry Site

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.4206w&link_type=abstract

American Astronomical Society, DPS meeting #40, #42.06; Bulletin of the American Astronomical Society, Vol. 40, p.473

Astronomy and Astrophysics

Astronomy

Scientific paper

The earliest interpretations of the vertical profiles of cloud-forming gases in the Probe Entry Site (PES) recognized that these profiles are like fossil remnants of cloud layers formed far from the PES. The equilibration levels* of ammonia and hydrogen sulfide were interpreted as markers of cloud bases in the surrounding atmosphere that were displaced downward within the PES 5-micron hot spot.
Static stability was also found to be vertically variable in the PES. This presentation will show that PES stable layers coincide with condensible volatile equilibration levels. Static stability thus provides additional fossil evidence for Jupiter's cloud structure outside of the PES 5-micron hot spot.
A detailed comparison of the vertical variation of both static stability and gas mixing ratios in the PES, along with constraints on these quantities from equilibrium cloud condensation models and published dynamical models, will be shown to agree with the following findings relevant to the atmosphere outside the PES:
* Equilibration level is defined as the inflection point in the vertical profile of a gas mixing ratio, such that deeper levels have constant mixing ratio, and overlying layers have decreasing mixing ratio with altitude.

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