Global-in-time Schwarz method applied to Two-Way Ocean-Atmosphere coupling

We propose an iterative process based on Schwarz-like methods to couple ocean and atmosphere models. This method has the advantage of ensuring good consistency of the coupled solution across the air-sea interface. Common coupling algorithmic approaches are only consistent asymptotically as the time step goes to zero. Until now, it was assumed that this lack of consistency does not significantly affect the physical properties of the solution. The relevancy of our approach is assessed in the context of coupling WRF and ROMS in a realistic configuration to simulate the genesis and the propagation of the tropical cyclone Erica.