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Stochastic modeling of mesoscale eddies in barotropic wind-driven circulation

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Abstract

We propose to follow a recent stochastic quasi-geostrophic model [4] derived from a decomposition of the flow into a resolved component and a time-uncorrelated uncertainty. One important characteristic of this random model is that it conserves the total energy along each realization. Such a stochastic principle has been tested for the numerical simulation of the wind-driven circulation in a shallow ocean basin. The numerical assement shows that the proposed random model can well capture on a coarse mesh the correct four-gyre time-averaged circulation structure, as predicted by a direct numerical simulation at a much finer resolution.
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Dates and versions

hal-02712112 , version 1 (01-06-2020)

Identifiers

  • HAL Id : hal-02712112 , version 1

Cite

Long Li, Werner Bauer, Etienne Mémin. Stochastic modeling of mesoscale eddies in barotropic wind-driven circulation. Workshop on Stochastic Parameterizations and Their Use in Data Assimilation, Jul 2019, London, United Kingdom. ⟨hal-02712112⟩
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