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Journal Articles Computers and Fluids Year : 2015

Enhanced ensemble-based 4DVar scheme for data assimilation

Abstract

Ensemble based optimal control schemes combine the components of ensemble Kalman filters and variational data assimilation (4DVar). They are trendy because they are easier to implement than 4DVar. In this paper, we evaluate a modified version of an ensemble based optimal control strategy for image data assimilation. This modified method is assessed with a Shallow Water model combined with synthetic data and original incomplete experimental depth sensor observations. This paper shows that the modified ensemble technique is better in quality and can reduce the computational cost.
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Dates and versions

hal-01144923 , version 1 (23-04-2015)

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Yin Yang, Cordelia Robinson, Dominique Heitz, Etienne Mémin. Enhanced ensemble-based 4DVar scheme for data assimilation. Computers and Fluids, 2015, 115, 15 p. ⟨10.1016/j.compfluid.2015.03.025⟩. ⟨hal-01144923⟩
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