Thermal structure and dynamics of the Jovian Atmosphere. 1: The Great Red SPOT

Details Thermal structure and dynamics of the Jovian Atmosphere. 1: The Great Red SPOT Thermal structure and dynamics of the Jovian Atmosphere. 1: The Great Red SPOT

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980stin...8125016f&link_type=abstract

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Physics

Atmospheric Physics, Atmospheric Temperature, Jupiter Atmosphere, Jupiter Red Spot, Voyager Project, Atmospheric Circulation, Barotropic Flow, Dynamic Models, Infrared Spectroscopy, Latent Heat, Linear Systems

Scientific paper

Temperatures and thermal winds, derived from Voyager infrared spectroscopy (IRIS) data over the Great Red Spot (GRS) and its environs, are presented. The atmosphere over the GRS is characterized by a tropopause which is cold relative to its environment and an upper stratosphere which is relatively warm. The cold tropopause implies a decrease in anticyclonic vorticity with height above 500 mb through the lower stratosphere. IRIS observations at 5 microns indicate little emission from the GRS itself, but enhanced emission in a ring about it, in agreement with recent ground based results. The behavior of the tropopause and 5 micron temperatures can be consistently interpreted as resulting from a circulation which rises within the GRS and subsides in the area around it. The explanation of the upper stratospheric temperatures is not so straightforward. A previous suggestion that they may be a manifestation of the linear vertical propagation of Rossby waves appears inconsistent with the gross east-west symmetry in the stratospheric temperatures over the GRS. The implications of the present results for various theoretical models of the GRS are examined, and the possibility that latent heat release drives the GRS is discussed.

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