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Communication Dans Un Congrès Année : 2007

Reduced order approaches for variational data assimilation in a model of the Tropical Pacific ocean

Résumé

A reduced order approach for 4D-Var data assimilation is presented in the context of a tropical Pacific ocean model. The control space is defined as the span of a few vectors representing a significant part of the system variability. It is shown that such an approach can lead to significant improvements, both in terms of the quality of the solution and of the computational efficiency. A first step toward an hybrid variational-sequential algorithm is also discussed.
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Dates et versions

hal-00385254 , version 1 (18-05-2009)

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  • HAL Id : hal-00385254 , version 1

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Eric Blayo, Céline Robert, Jacques Verron. Reduced order approaches for variational data assimilation in a model of the Tropical Pacific ocean. SIAM Conference on Computational Science and Engineering, Feb 2007, Costa Mesa, United States. ⟨hal-00385254⟩
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