TY - SLIDE KW - annual seminar KW - ensemble prediction KW - AS2017 AU - Roberto Buizza AU - Martin Leutbecher AU - Martin Janousek BT - ECMWF Annual Seminar 2017 C1 - Events DA - 2017 LA - eng PY - 2017 T2 - ECMWF Annual Seminar 2017 T3 - ECMWF Annual Seminar TI - The Forecast Skill Horizon ER -