Optimality of variational data assimilation and its relationship with the Kalman filter and smoother

@inproceedings{ZHUIN2001OptimalityOV,
  title={Optimality of variational data assimilation and its relationship with the Kalman filter and smoother},
  author={LI ZHUIN and I..},
  year={2001}
}
  • LI ZHUIN, I..
  • Published 2001
The known properties of equivalence between four-dimensional variational (4D-Var) data assimilation and the Kalman filter as well as the fixed-interval Kalman smoother point to particular optimal properties of 4D-Var. In the linear context, the 4D-Var solution is optimal, not only with respect to the model trajectory segment over the assimilation time interval, but also with respect to any model state at a single observation time level; in the batch processing (cycling 4D-Var) method, the… CONTINUE READING
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