TY - SLIDE KW - workshop KW - data assimilation KW - diagnostics KW - systems performance AU - R. Menard AU - Y. Yang AU - Y. Rochon C1 - Events DA - 2009 LA - eng PY - 2009 TI - Convergence and stability of estimated error variances derived from assimilation residuals in observation space UR - https://www.ecmwf.int/node/15264 ER -