TY - CPAPER AU - S. Uppala AU - A. Hollingsworth AU - S. Tibaldi AU - P.W. Kållberg BT - Seminar on Data Assimilation Systems and Observing System Experiments with Particular Emphasis on FGGE, 3-7 September 1984 CY - Shinfield Park, Reading DA - 1984 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 1984 SP - 165 EP - 202 T2 - Seminar on Data Assimilation Systems and Observing System Experiments with Particular Emphasis on FGGE, 3-7 September 1984 TI - Results from two recent observing system experiments at ECMWF VL - I ER -