TY - CPAPER AU - Mike Fisher BT - ECMWF Workshop on Flow-dependent aspecyts of data assimilation, 11-13 June 2007 CY - Shinfield Park, Reading DA - 2007 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 2007 SP - 27 EP - 36 T2 - ECMWF Workshop on Flow-dependent aspecyts of data assimilation, 11-13 June 2007 TI - The sensitivity of analysis errors to the specification of background error covariances ER -