Error propagation and data assimilation

François-Xavier Le Dimet

Université de Grenoble + INRIA, Laboratoire Jean Kuntzmann, Grenoble, France

The approach of Data Assimilation via Optimal Control Methods leads to a dynamical system: the Optimality System in which all the available information is gathered. The propagation of uncertainties must be carried out not just from the model but from the O.S. I introduced a second adjoint from where the evaluation of the dynamics of uncertainties are studied.

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