TY - RPRT AU - A. Lorenc AU - I. Rutherford AU - G. Larsen CY - Shinfield Park, Reading DA - 12/1977 LA - eng M1 - 6 M3 - Technical Report PB - ECMWF PP - Shinfield Park, Reading PY - 1977 EP - 47 TI - The ECMWF analysis and data assimilation scheme: Analysis of mass and wind field ER -