Journal article

Insights about the hybrid error covariance models

Francesco Sardelli, Craig Bishop

Copernicus GmbH

Abstract

<p>Hybrid error covariance models construct the covariance matrix to be used in variational data assimilation methods through a linear combination <strong>P<sup>h</sup></strong>= <span>&#945;<sub>c</sub></span><strong>P<sup>c</sup></strong><span>&#160;</span>+ <span>&#945;<sub>e</sub></span><strong>P<sup>l </sup></strong>of the climatological error covariance matrix <strong>P</strong><sup><span>c </span></sup>and the localized ensemble covariance matrix <strong>P<sup>l </sup></strong>=..

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