TY - SLIDE KW - annual seminar AU - Niels Bormann AU - Massimo Bonavita AU - Peter Weston AU - Cristina Lupu AU - Carla Cardinali AU - A. McNally AU - Kirsti Salonen BT - ECMWF Annual Seminar 2014 C1 - Events DA - 2014 LA - eng PY - 2014 T2 - ECMWF Annual Seminar 2014 T3 - ECMWF Annual Seminar TI - Progress towards better representation of observation and background errors in 4DVAR ER -