TY  - GEN
AU  - Cullen, M.J.P.
TI  - On the accuracy of the semi-geostrophic approximation
T2  - Technical Memorandum
VL  - 285
PY  - 1999///
CY  - Reading
PB  - ECMWF
KW  - PREVISÃO NUMERICA
KW  - IM
ER  -