Experiments with coupled systems
1. Zebiak-Cane model (Cai et al, 2002, J of Cl.):
We found the instabilities of the ENSO evolution,
and their dependence on the annual cycle and the
ENSO phase
Minimizing the projection on bred vectors on the
initial conditions reduces a lot the “spring barrier”
2. NSIPP coupled GCM
We performed two independent breeding experiments
Results suggest we can isolate the ENSO instabilities
3. Breeding with the NSIPP operational system