Jovian winds from Voyager 2. Part II - Analysis of eddy transports

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Atmospheric Circulation, Jupiter Atmosphere, Vortices, Wind (Meteorology), Data Sampling, Energy Conversion, Kinetic Energy, Meridional Flow, Momentum Transfer, Voyager 2 Spacecraft, Jupiter, Winds, Voyager 2, Eddies, Transport, Analysis, Circulation, Atmosphere, Kinetic Energy, Jets, Shear, Clouds, Features, Comparisons

Scientific paper

Previous Voyager 1 and 2 Jovian circulation measurements exhibit a large positive correlation between eddy momentum transports and the meridional shear of the zonal wind component, implying a very large rate of conversion of eddy kinetic energy of the zonal jets. Examination of the vectors mainly responsible for the correlation in our recent Voyager 2 global measurements indicates that it is probably caused by a biased sampling of prominent cloud features associated with circulating eddies. Intensive diagnostic measurements with more nearly uniform spatial sampling show no significant correlation in regions where our original measurements showed strong correlations. If the sampling bias mechanism is fully accounted for in all Jovian circulation measurements, the estimated eddy-to-mean-flow kinetic energy conversion rate may be reduced significantly.

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