Pacific Northwest And Bo Yellow Sea And East China Sea High-resolution General Circulation Numerical Simulation

In this thesis, circulation of the West Pacific Ocean and the East China Sea is simulated, with a three dimensional baroclinic primitive equation model - MIT general circulation model(MITgcm). Nested grid for velocity, temperature and salinity are used successfully, and high resolution results of circulation of these area are obtained. These results reveal the characteristics and seasonal variation of circulation of these area. This work is useful for further research about interannual and decadal variations.In the West Pacific Ocean model, we have taken global circulation into account, this model successfully simulated flow pattern, volume transport and heat transport of Kuroshio. Volume transport of PN section of East China Sea is 29.7Sv annual mean, the maximum value is 27.1Sv in spring and summer, the minimum value is 30.0Sv in autumn and winter. The heat transport contribute to the East China Sea is 0.058 × 10¹⁵W annual mean, maximum value is 0.098 × 10¹⁵W in March, minimum value is 0.030 × 10¹⁵W in August.The East China Sea model has much higher resolution grid, which has simulated seasonal variation of mixture and stratification. In winter, with strong north wind, mixture can reach sea bottom. In spring stratification appears, mixed layer depth is about 5 meters, and the thermocline is weak. Summertime, stratification strengthens, and mixed layer depth is deeper (about 10 meters), and the thermocline is stronger. In autumn, mixture is more active, and the thermocline is more deeper, from shallow to deep area thermocline disappears gradually. The model has simulated Kuroshio, Taiwan Warm Current, Tsushima Current, the Yellow Sea Warm Current, and Coast Current. The Kuroshio circulation is more reasonable in the East China Sea model contrast the West Pacific Ocean model. The range of Kuroshio is more narrow, velocity is more strong, in this model. And the countercurrent of Kuroshio and the...