TY  - GEN
AU  - Bouttier, F.
AU  - Derber, J.
AU  - Fisher, M.
TI  - The 1997 revision of the Jb term in 3D/4D-Var
T2  - Technical Memorandum
VL  - 238
PY  - 1997///
CY  - Reading
PB  - ECMWF
KW  - PREVISÃO NUMERICA
KW  - IM
ER  -