520 Model error estimation in 4 D-Var Yannick Trémolet

@inproceedings{Trmolet2007520ME,
  title={520 Model error estimation in 4 D-Var Yannick Tr{\'e}molet},
  author={Yannick Tr{\'e}molet},
  year={2007}
}
Current operational implementations of 4D-Var rely on the assumption that the numerical model representing the evolution of the atmospheric flow is perfect, or at least that model errors are small enough to be neglected compared to other errors in the system. This paper describes a formulation of weak constraint 4D-Var that removes that assumption by explicitly representing model error as part of the 4D-Var control variable. The consequences of this choice of control variable on the… CONTINUE READING

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