geostrophic motion
1.eddy transfer of the sensible beat is closely related to the transfer of the momentum in the large-scale quasi-geostrophic motion.
2.The midlatitude quasi-stationary planetary waves forced by topography and heat sources are computed by means of a β-plane approximation, quasigeostrophic model in which eddy viscosity and Newtonian cooling are included- Moreover, by comparing between the results computed by this model and Burger equation model, it is shown that the quasi-geostrophic model is suitable for the planetary-scale motion whose meridional wavelength is not large, while Burger equation can not correctly describe this kind of planetary-scale motion.
3.There are three different physical factors affecting the nonlinear Ekman pumping (the vertical motion) at the top of baroclinic boundary layer: First, the barotropic geostrophic near the surface; Second, the thermal wind vorticity due to the atmospheric baroclinicity; Third, the nonlinear effect of joint of barotropic geostrophic vorticity and baroclinic thermal wind vorticity.
4.The approximate structure of nonlinear action of climatic atmosphere and ocean is: the nonlinear action de-creases usually with increasing latitude, which is related to the role of the Coriolis force in fluid motion (forming geostrophic current);
