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| Titel |
Controlling balance in an ensemble Kalman filter |
| VerfasserIn |
G. A. Gottwald |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 21, no. 2 ; Nr. 21, no. 2 (2014-03-14), S.417-426 |
| Datensatznummer |
250120902
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| Publikation (Nr.) |
 copernicus.org/npg-21-417-2014.pdf |
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| Zusammenfassung |
| We present a method to control unbalanced fast dynamics in an
ensemble Kalman filter by introducing a weak constraint on the imbalance in a
spatially sparse observational network. We show that the balance constraint
produces significantly more balanced analyses than ensemble Kalman filters
without balance constraints and than filters implementing incremental
analysis updates (IAU). Furthermore, our filter with the weak constraint on
imbalance produces good rms error statistics which outperform those of
ensemble Kalman filters without balance constraints for the fast fields. |
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