96
P. Courtier
Shaw DB, Lonnberg P, Hollingsworth A, Unden P (1987) The 1984/1985 revisions of
the ECMWF mass and wind analysis. Q J R Meteorol Soc 113: 553-566
Simmons AJ (1991) Development of a high resolution, semi-Lagrangian version of the
ECMWF forecast model. Proceedings of the 1991 ECMWF seminar on "Numerical methods in
atmospheric models", 9-13 September 1991
Talagrand 0 (1988) Four-dimensional variational assimilation. Proceedings of the 1988
ECMWF seminar, Reading, UK
Tarantola A (1987) Inverse problem theory. Methods for data fitting and model parameter
estimation. Elsevier
Thepaut J-N, Courtier P (1991) Four-dimensional variational data assimilation using the
adjoint of a multi-level primitive equation model. Q J R Meteorol Soc 117: 1225-1254
Thepaut J-N, Hoffman R, Courtier P (1993) Interactions of dynamics and observations
in a four-dimensional variational assimilation. Mon Wea Rev 121: 3393-3414
Vukicevic T (1991) Non linear and linear evolution of initial forecast errors. Mon Wea Rev
119: 1602-1611
Wergen W (1992) The effect of model errors in variational assimilation. Tellus 44A: 297-313
Zou X, Navon 1M, Sela J (1993) Variational data assimilation with moist threshold process
using NMC spectral model. Tel/us, in press
Zupanski D (1993) The effect of discontinuities in the Betts-Miller cumulus convection scheme
on four-dimensional data assimilation. Tel/us, in press
Zupanski M (1993) Regional four-dimensional variational data assimilation in a quasioperational forecasting environment. Mon Wea Rev 121: 2396-2408