•Ensemble forecasting, low dimensionality,
and data assimilation. Examples
with a QG model and the NCEP global
model
•Breeding, Lyapunov Vectors and Singular Vectors in a coupled system with fast and slow time
scales. Examples with a
coupled Lorenz model, Zebiak-Cane model and NASA coupled GCM (NSIPP)
•Implications for data assimilation