Interaction of eddies and mean zonal flow on Jupiter as inferred from Voyager 1 and 2 images

Details Interaction of eddies and mean zonal flow on Jupiter as inferred from Voyager 1 and 2 images Interaction of eddies and mean zonal flow on Jupiter as inferred from Voyager 1 and 2 images

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.8733i&link_type=abstract

Journal of Geophysical Research, vol. 86, Sept. 30, 1981, p. 8733-8743.

Physics

117

Atmospheric Circulation, Jupiter Atmosphere, Planetary Rotation, Velocity Distribution, Vortices, Voyager 1 Spacecraft, Voyager 2 Spacecraft, Zonal Flow (Meteorology), Barotropic Flow, Data Reduction, Energy Conversion, Spaceborne Photography, Thermodynamics, Wind Measurement, Jupiter, Eddy Effects, Flow, Zones, Voyager 1, Voyager 2, Flux, Data, Features, Velocity, Latitude, Gradients, Barotropy, Kinetics, Imagery, Energy, Infrared, Heat Flux, Comparisons, Analysis, Atmosphere

Scientific paper

Voyagers 1 and 2 narrow angle frames are used to obtain displacements of features at resolutions of 130 km over time intervals of 1 Jovian rotation. It is shown that the mean zonal velocity profile does not change by a measurable amount between Voyagers 1 and 2, which is consistent with previous observations. It is also shown that the curvature of the velocity profile vanes varies with latitudes in the range from -3 beta to +2 beta. The barotropic stability criterion is violated at 10 latitudes between + and - 60 deg, and the rate of conversion of eddy kinetic energy into zonal mean kinetic energy is in the range from 1.5 to 3.0 per sq Wm for a layer 2.5 bar deep. The rate of energy conversion is more than 10% of the total infrared heat flux for Jupiter, as compared to the earth where it is only 0.1% of the infrared, which suggests that the two planets possess fundamentally different thermomechanical energy cycles.

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