Abstract: A simple coupled ocean-atmosphere model is integrated numerically for long-range, in which we consider the turbulent heating, radiative cooling, regulation of radiative balance by clouds, condensation heating, evaporation from the sea and upwelling of ocean water. The results of the experiment show that the sea surface temperature anomalies in the tropical region may influence the atmospheric vertical circulation. These local effects in the low latitude may extend to the middle-high latitudes. Even though only upper ocean mixed layer has been considered, the short-term climatic oscillation and the SST lag relationships between the middle and eastern Pacific are revealed in this experiment.