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Dynamics of Jupiter's Atmosphere

Ingersoll, A. P. and Vasavada, A. R. (1998) Dynamics of Jupiter's Atmosphere. In: Highlights of Astronomy. Vol.11B. Kluwer Academic Publishers , Dordrecht, The Netherlands, pp. 1042-1049. ISBN 0-7923-5556-3.

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Results from the Galileo probe and orbiter arc compared with Voyager and ground-based results. The probe made measurements to the 20-bar level, well below the nominal cloud base at 5 bars and well below the level where sunlight is absorbed. The winds increased with depth within the clouds and then remained constant below cloud base. This rules out most "thin weather layer" models of Jovian meteorology. Water, H_2S, and NH_3 were depleted relative to "solar" abundances at the nominal cloud base but increased with depth below 10 bars. Apparently the probe entered a dry downdraft that penetrated to 20 bars. Consistent with this result, the orbiter found water varying by factors of 100 from place to place, with the lowest values at the sites that resemble the one where the probe went in. The orbiter also revealed that these sites are regions of horizontal convergence of the cloud top winds, which is consistent with the downdraft hypothesis.

Item Type:Book Section
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URLURL TypeDescription
Ingersoll, A. P.0000-0002-2035-9198
Vasavada, A. R.0000-0003-2665-286X
Additional Information:© 1998 IAU. It is impossible to mention all the people who contributed their talent and energy to the success of the Galileo project. Their achievement is gratefully acknowledged.
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36030
Deposited By: Tony Diaz
Deposited On:07 Feb 2013 20:51
Last Modified:09 Nov 2021 23:19

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