TY - CPAPER AU - I. Blanchet BT - Workshop on Diagnosis of Data Assimilation Systems, 2 - 4 November 1998 CY - Shinfield Park, Reading DA - 1999 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 1999 SP - 53 EP - 66 T2 - Workshop on Diagnosis of Data Assimilation Systems, 2 - 4 November 1998 TI - Adaptive Kalman filtering: an estimation of observational and system noise statistics ER -