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14-18 August 2017
Uppsala University
Europe/Stockholm timezone

Stability of the Spectral EnKF under nested covariance estimators

17 Aug 2017, 16:30
30m
Ångströmslaboratoriet (Uppsala University)

Ångströmslaboratoriet

Uppsala University

Speaker

Speaker

Marie Turčičová (Charles University, Prague)

Description

In the case of traditional Ensemble Kalman Filter (EnKF), it is known that the filter error does not grow faster than exponentially for a fixed ensemble size. The question posted in this contribution is whether the upper bound for the filter error can be improved by using an improved covariance estimator that comes from the right parameter subspace and has smaller asymptotic variance. Its effect on Spectral EnKF is explored by a simulation.

Primary author

Marie Turčičová (Charles University, Prague)

Co-authors

Prof. Jan Mandel (University of Colorado Denver) Dr Krystof Eben (Institute of Computer Science, The Czech Academy of Sciences)

Presentation Materials

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