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The potential of the ensemble Kalman filter for NWP—a comparison with 4D‐Var

Lorenc, Andrew C.·2003·Quarterly Journal of the Royal Meteorological Society

Abstract

The ensemble Kalman filter (EnKF) is reviewed for its expected assimilation characteristics and ease of implementation, and compared to the currently more popular four‐dimensional variational assimilation (4D‐Var). The EnKF is attractive when building a new medium‐range ensemble numerical weather prediction (NWP) system. However it is less suitable for NWP systems with uncertainty in a wide range of scales; it may not use high‐resolution satellite data as effectively as 4D‐Var. For limited‐area mesoscale NWP systems a hybrid method is attractive. © Crown copyright, 2003. Royal Meteorological Society

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Metadata

Authors
Lorenc, A. C.
Venue
Quarterly Journal of the Royal Meteorological Society
Publisher
Wiley
Published
2003-10
Volume
129
Issue
595
Pages
3183-3203
ISSN
  • 0035-9009 (ISSN-L)
  • 1477-870X
OpenAlex
W1980785126
Cited by
751
References
1
FWCI
7.83
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The potential of the ensemble Kalman filter for NWP—a comparison with 4D‐Var. https://app.cochat.ai/papers/10.1256/qj.02.132
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Lorenc, A. C. (2003). The potential of the ensemble Kalman filter for NWP—a comparison with 4D‐Var. Quarterly Journal of the Royal Meteorological Society. https://doi.org/10.1256/qj.02.132

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