TY - SLIDE KW - annual seminar AU - C. Snyder BT - ECMWF Annual Seminar 2011 C1 - Events DA - 2011 LA - eng PY - 2011 T2 - ECMWF Annual Seminar 2011 T3 - ECMWF Annual Seminar TI - Ensemble filtering in the presence of nonlinearity and non-gaussianity ER -