Elimination of the Helmholtz Equation Associated with the Semi-Implicit Scheme in a Grid Point Model of the Shallow Water Equations

Monique Tanguay Canadian Meteorological Center, Dorval, Québec, Canada, H9P 1J3

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André Robert Canadian Meteorological Center, Dorval, Québec, Canada, H9P 1J3

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Abstract

A modification is introduced in a semi-implicit version of a grid point model of the shallow water equations. The new model is simpler, runs one-third, and after 5 days of integration, the forecasts differ by less than 1 m.

Abstract

A modification is introduced in a semi-implicit version of a grid point model of the shallow water equations. The new model is simpler, runs one-third, and after 5 days of integration, the forecasts differ by less than 1 m.

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