TY - GEN AU - Buizza, Roberto ED - UK., ED - TI - Impact of a simple vertical diffusion scheme and of the optimisation time interval on optimal unstable strucures T2 - ECMWF Technical Memorandum VL - 192 PY - 1993/// CY - Reading PB - ECMWF KW - MODELOS DE PREVISAO NUMERICA KW - IM ER -