TY - SLIDE KW - annual seminar AU - D. Fonteyn AU - S. Bonjean AU - S. Chabrillat AU - F. Daerden AU - Q. Errera BT - ECMWF Annual Seminar 2005 C1 - Events DA - 2005 LA - eng PY - 2005 T2 - ECMWF Annual Seminar 2005 T3 - ECMWF Annual Seminar TI - Chemical data assimilation at VIRA - IASB ER -