Three-to-six day oscillation caused by air-sea interaction
Analysis of output from a global, high-resolution (~10km horizontal grid spacing), coupled ocean-atmosphere simulation revealed an ubiquitous interaction in the air-sea interface, with a cyclic nature characterized by a period of several days. Using a set of simulations, we found that the interaction is governed by air-sea coupling and by model resolution. We discuss the results from this set of simulations, including the results from a new, global, coupled ~5km simulation. We suggest a possible mechanism for this interaction, which is controlled by feedback between the Sea Surface Temperature (SST) in the ocean and surface wind speed in the atmosphere.