An impact study of updating background error covariances in the ALADIN-France data assimilation system
Abstract
The operational ALADIN‐France 3D‐Var system is based on static background error covariances calculated off‐line during a few week past period. In this study, the impact of an online updated specification of background error covariances is evaluated in the ALADIN‐France system. This evaluation is done by comparing three experiments, respectively based on (i) covariances calculated from a monthly average over a past period, (ii) covariances...
Paper Details
Title
An impact study of updating background error covariances in the ALADIN-France data assimilation system
Published Date
Oct 15, 2013
Volume
118
Issue
19
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