TY - CPAPER AU - P.J. van Leeuwen BT - Seminar on Recent developments in data assimilation for atmosphere and ocean, 8-12 September 2003 CY - Shinfield Park, Reading DA - 2003 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 2003 SP - 265 EP - 286 T2 - Seminar on Recent developments in data assimilation for atmosphere and ocean, 8-12 September 2003 TI - Nonlinear ensemble data assimilation for the ocean ER -