TY - GEN AU - Marécal, V. AU - Mahfouf, J.F. TI - Experiments on 4D-Var assimilation of rainfall data using an incremental formulation T2 - ECMWF/Technical Memorandum VL - 367 PY - 2002/// CY - Reading PB - ECMWF KW - PREVISAO NUMERICA KW - IM ER -