PowerPoint Presentation - Methods for dealing with spurious covariances arising from small samples in ensemble data assimilation

SENCORP moderation functions adapt

Smoothed ENsemble Correlations Raised to a Power (SENCORP) moderation functions provide flow adaptive moderations functions.

Stable flow error correlations

Unstable flow error correlations

SENCORP moderation

Flow Dependent Localization


	In this scheme, the tapering function is broad in the stable case, and much narrower in the unstable case, resulting in better use of the observations in both situations.