TY - CPAPER AU - G.A. Kelly BT - Workshop on Stratosphere and Numerical Weather Prediction, 15-17 November 1993 CY - Shinfield Park, Reading DA - 1993 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 1993 SP - 271 EP - 315 T2 - Workshop on Stratosphere and Numerical Weather Prediction, 15-17 November 1993 TI - Some aspects of stratospheric data assimilation at ECMWF ER -