Numerical simulation of large-scale circulation in the Pacific Ocean Part III: Seasonal variations
太平洋大尺度环流数值模拟 Ⅲ：季节变化

Seasonal variation of the general circulation in the Pacific Ocean has been simulated on the basis of the annual mean simulations given in Part II of this study. All the simulated variables such as the simulated sea surface elevation, surface and subsurface layer currents, vertical velocity at the interface between the first two upper layers, and surface layer temperature exhibit reasonable periodical variations. The surface layer temperature is in good agreement with the available observational data. The warm water region in the western Pacific is in the subtropical area of the southern Pacific during winter time and shifts to the northern subtropical area in summer. The extension and contraction of the cold water tongue in the eastern equatorial Pacific are clearly related to the variability of the south- east trade wind. Besides, the sea surface heat flux and the heat storage rate of the Pacific as well as their seasonal cycles have also been computed and analysed.