期刊
IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS
卷 46, 期 6, 页码 784-797出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0001433810060095
关键词
localized vortices; Rossby waves; two-dimensional Rossby solitons; monopoles; beta plane; quasigeostrophic approximation
资金
- Russian Foundation for Basic Research [08-05-00006]
This paper studies the joint influence that rotation and the earth's sphericity have on the dynamics of localized synoptic scale vortices within the quasi-geostrophic barotropic model in the beta-plane approximation. Rossby solitons (two-dimensional vortices exponentially localized in space which propagate without changing their form along the latitude circles) are considered in the first part of the article. The general properties of such solutions are discussed. The simplest examples are presented, and a brief review of the main results is given. The second part is dedicated to the theory of nonstationary monopoles. The physical mechanisms governing the evolution of such vortices are described; different stages of this evolution are determined for intense vortices. Analytical and numerical results are used to confirm the qualitative explanations.
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