TY - SLIDE KW - annual seminar AU - A. Lorenc BT - ECMWF Annual Seminar 2003 C1 - Events DA - 2003 LA - eng PY - 2003 T2 - ECMWF Annual Seminar 2003 T3 - ECMWF Annual Seminar TI - Relative merits of 4D-Var and ensemble Kalman filter ER -