A method for merging flow-dependent fore
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R.E. Petrie; R.N. Bannister
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Article
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2011
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Elsevier Science
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English
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The background error covariance matrix, B, is often used in variational data assimilation for numerical weather prediction as a static and hence poor approximation to the fully dynamic forecast error covariance matrix, P f . In this paper the concept of an Ensemble Reduced Rank Kalman Filter (EnRRKF