ENSO Simulated by Intermediate Coupled Models and Evaluated with Observations Over 1970-1996. Part II: Sensitivity to the Eastward Penetration of the Equatorial Westerlies and to the Off-Equatorial O

Introducing new parameterizations of subsurface temperature and atmospheric convection in the Cane and Zebiak's model allows to reproduce oscillations with a period close to 4 years, equatorial wind anomalies that are located close to the dateline and realistic amplitudes of SST, wind and thermocline anomalies in the equatorial Pacific both in warm and cold phases.