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Correction of ‘Estimating observation impact without adjoint model in an ensemble Kalman filter’

✍ Scribed by Hong Li; Junjie Liu; Eugenia Kalnay

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
140 KB
Volume
136
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

The ensemble sensitivity method proposed by Liu and Kalnay (2008) to estimate the impact of observations on reducing forecast error is shown to have a slight error and is corrected here. The corrected formula captures the actual forecast error reduction better and removes the positive bias in the estimation introduced by the original formula. Copyright © 2010 Royal Meteorological Society

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