Summary about breeding in a coupled system
•Breeding is a simple, finite-time, finite-amplitude generalization of Lyapunov vectors: just run the model twice…
•The only free parameters are the amplitude and frequency of renormalization (does not depend on the norm)
•Breeding on the Lorenz (1963) model yields very robust prediction rules for regime change and duration
•In coupled models, it is possible to isolate the fast and the slow modes by a physically based choice of the amplitude and frequency of the normalization.