TY - GEN AU - J.-F. Mahfouf AU - Florence Rabier BT - ECMWF Technical Memoranda CY - Shinfield Park, Reading DA - 02/1999 DO - 10.21957/5np3uktqi LA - eng M1 - 272 PB - ECMWF PP - Shinfield Park, Reading PY - 1999 EP - 26 T2 - ECMWF Technical Memoranda TI - The ECMWF operational implementation of four dimensional variational assimilation. Part II: Experimental results with improved physics UR - https://www.ecmwf.int/node/10930 ER -