Generation of large-scale eddies and zonal winds in planetary atmospheres
O.G. Onishchenko a
O.A. Pokhotelov a
N.M. Astaf’eva b
a Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Bolshaya Gruzinskaya ul. 10, Moscow, 123995, Russian Federation
b Space Research Institute, Russian Academy of Sciences, Profsoyuznaya str. 84/32, Moscow, 117997, Russian Federation
The review deals with a theoretical description of the
generation of zonal winds and vortices in a turbulent barotropic
atmosphere. These large-scale structures largely determine the
dynamics and transport processes in planetary atmospheres.
The role of nonlinear effects on the formation of mesoscale
vortical structures (cyclones and anticyclones) is examined. A
new mechanism for zonal wind generation in planetary atmospheres is discussed. It is based on the parametric generation of
convective cells by finite-amplitude Rossby waves. Weakly
turbulent spectra of Rossby waves are considered. The theoretical results are compared to the results of satellite microwave monitoring of the Earth’s atmosphere.