A review of forecast error covariance st
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R. N. Bannister
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Article
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2008
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John Wiley and Sons
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English
β 401 KB
## Abstract This article reviews a range of leading methods to model the background error covariance matrix (the **B**βmatrix) in modern variational data assimilation systems. Owing partly to its very large rank, the **B**βmatrix is impossible to use in an explicit fashion in an operational setting