TY - GEN AU - Girard, C. AU - Jarraud, M. TI - Short and medium range forecast differences between a spectral and grid point model an extensive quasi-operational comparison T2 - ECMWF/Technical Report VL - 32 PY - 1982/// CY - Reading PB - ECMFC KW - PREVISAO NUMERICA KW - IM ER -