Abstract

New models using scale analysis and perturbation methods were derivated starting from the shallow water equations based on barotropic fluids. In the paper, to discuss the irregular topography with different magnitudes, especially considering the condition of the vast terrain, some modified quasi-geostrophic barotropic models were obtained. The unsteady terrain is more suitable to describe the motion of the fluid state of the earth because of the change of global climate and environment, so the modified models are more rational potential vorticity equations. If we do not consider the influence of topography and other factors, the models degenerate to the general quasi-geostrophic barotropic equations in the previous studies. Modelos semigeostróficos barotrópicos modificados con base en topografía inestableResumenEste trabajo deduce nuevos modelos con el uso de los métodos de análisis a escala y de perturbación a partir de las ecuaciones de aguas poco profundas con base en fluidos barotrópicos. En este artículo se obtuvieron algunos modelos semigeostróficos barotrópicos para aplicar en zonas de topografía inestable con diferentes magnitudes y considerar especialmente la condición del extenso terreno. La topografía inestable es más propicia para describir el movimiento del estado fluido de la tierra debido al cambio del clima y ambiente, por lo tanto los modelos modificados son ecuaciones de vorticidad potenciales más razonables. Si no se considera la influencia de la topografía y otros factores, los modelos se reducirían a las ecuaciones generales semigeostróficas barotrópicas de estudios anteriores.

Highlights

  • New models using scale analysis and perturbation methods were derivated starting from the shallow water equations based on barotropic fluids

  • The Modified Quasi-geostrophic Barotropic Models Based on Unsteady Topography

  • Luo (1990) pointed out the topographic effect was an important factor of forming atmospheric blocking, and the global atmospheric circulation would even get affected by the topographic effect

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Summary

A BST R ACT

New models using scale analysis and perturbation methods were derivated starting from the shallow water equations based on barotropic fluids. To discuss the irregular topography with different magnitudes, especially considering the condition of the vast terrain, some modified quasi-geostrophic barotropic models were obtained. If we do not consider the influence of topography and other factors, the models degenerate to the general quasi-geostrophic barotropic equations in the previous studies. Modelos Semigeostróficos Barotrópicos Modificados con Base en Topografía Inestable. Este trabajo deduce nuevos modelos con el uso de los métodos de análisis a escala y de perturbación a partir de las ecuaciones de aguas poco profundas con base en fluidos barotrópicos. La topografía inestable es más propicia para describir el movimiento del estado fluido de la tierra debido al cambio del clima y ambiente, por lo tanto los modelos modificados son ecuaciones de vorticidad potenciales más razonables. The Modified Quasi-geostrophic Barotropic Models Based on Unsteady Topography.

Introduction
Derive the barotropic models
Full Text
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