A simple inertial model for Neptune's zonal circulation

Details A simple inertial model for Neptune's zonal circulation A simple inertial model for Neptune's zonal circulation

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.2269a&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, Nov. 1990, p. 2269-2272.

Astronomy and Astrophysics

Astronomy

3

Astronomical Models, Neptune Atmosphere, Vorticity, Voyager Project, Wind (Meteorology), Zonal Flow (Meteorology), Atmospheric Models, Planetary Atmospheres, Polar Regions, Shear Flow, Velocity Distribution

Scientific paper

Voyager imaging observations of zonal cloud-tracked winds on Neptune revealed a strongly subrotational equatorial jet with a speed approaching 500 m/s and generally decreasing retrograde motion toward the poles. The wind data are interpreted with a speculative but revealingly simple model based on steady gradient flow balance and an assumed global homogenization of potential vorticity for shallow layer motion. The prescribed model flow profile relates the equatorial velocity to the mid-latitude shear, in reasonable agreement with the available data, and implies a global horizontal deformation scale L(D) of about 3000 km.

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