Other
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jats...50...14d&link_type=abstract
Journal of the Atmospheric Sciences (ISSN 0022-4928), vol. 50, no. 1, p. 14-22.
Other
18
Jupiter Atmosphere, Planetary Meteorology, Troposphere, Vorticity, Wind Profiles, Zonal Flow (Meteorology), Atmospheric Models, Primitive Equations, Stream Functions (Fluids), Jupiter, Atmosphere, Wind, Spacecraft Observations, Voyager Missions, Numerical Methods, Analysis, Troposphere, Midlatitude Regions, Models, Theoretical Studies, Latitude, Stability, Experiments, Layers, Depth, Dynamics, Equation Of Motion, Vertical Structure, Parameters
Scientific paper
We present evidence from analysis of Voyager data and numerical experiments that in Jupiter's troposphere at midlatitudes the potential vorticity is given simply by the reciprocal of the streamfunction. This relationship agrees with the results of a vortex-tube stretching analysis of the Voyager wind-field data of the Great Red Spot and White Oval BC, whereas other published models do not. The derivative of streamfunction with respect to potential vorticity is negative definite, and in the quasigeostrophic limit the relationship is neutrally stable with respect to Arnold's second stability theorem. Numerical experiments indicate that the relationship is also neutrally stable in the primitive shallow-water system. This resolves a long-standing question as to how Jupiter's cloud-top winds are able to violate the Rayleigh-Kuo stability criterion, and constrains the two-layer model to a single free parameter.
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