Quasigeostrophic movements in barotropic and baroclinic fluid
Abstract
The dynamics of largescale motions in a thin fluid layer on a rotating sphere in a gravity field is reviewed, and a classification of these motions is derived in a quasigeostrophic approximation in response to the observation of certain solitontype effects in quasigeostrophic motions not subject to the standard vortex equation. For a barotropic model with quasitwodimensional motions, a nonlinear equation is obtained which describes the motion on such surfaces for which the radius of curvature is much larger than the Obukhov radius, permitting a quasisolitontype solution. An analogous equation is obtained for a baroclinic atmosphere whose radius of curvature is much larger than the interior Rossby radius of deformation. The barotropic case of planetary waves on an arbitrary surface of rotation is considered.
 Publication:

USSR Report Earth Sciences JPRS UES
 Pub Date:
 July 1984
 Bibcode:
 1984RpESc.......81R
 Keywords:

 Atmospheric Boundary Layer;
 Baroclinic Waves;
 Barotropic Flow;
 Geostrophic Wind;
 Planetary Waves;
 Solitary Waves;
 Jupiter Atmosphere;
 Nonlinear Evolution Equations;
 Planetary Surfaces;
 Rotating Fluids;
 Fluid Mechanics and Heat Transfer