The Wind Stress Force upon the Tropical Baroclinic Ocean
风应力对热带斜压海洋的强迫

The response of the western tropical Pacific to zonal wind stress is analyzed based on a linearly two-layer oceanic model with different density and temperature in surface and sub-surface layer, and the distribution of thermocline depth, current velocity and sea temperature of different layers are calculated. Results show that the temperature disturbance developed in the sub-surface layer travels eastward in the form of Kelvin waves, and so do other variables. The changeable amplitude of sub-surface temperatures is greater than that of surface, which accords with the fact that the anomaly of the physical fields in the western tropical Pacific plays an important role in El Nino and La Nina events.