Abstract
For the weakly ionized E layer plasma, a generalized Charney‐Obukhov equation for magnetized Rossby waves is derived. This magnetized Rossby wave is produced by the dynamo electric field and represents the ionospheric generalization of tropospheric Rossby waves in a rotating atmosphere by the spatially inhomogeneous geomagnetic field. The basic characteristics of the wave are given. The modified Rossby velocity and Rossby‐Obukhov radius are introduced. The mechanism of self‐organization into solitary vortical nonlinear structures is examined. The mechanism of a self‐organization of solitary structures is the result of the mutual compensation of wave dispersion and interaction through the scalar and Poisson bracket convective nonlinearities in the nonlinear wave equation. As a result, the solitary structures are anisotropic, containing a circular vortex superimposed on a dipole perturbation. The degree of anisotropy sharply increases when the vortex size approaches the so‐called intermediate geostrophic size.
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