동중국해에서 태풍에 대한 해양반응 큰에디모사

Abstract

A large eddy simulation (LES) model is used to examine an ocean response to a typhoon in the East China Sea. Wind stresses and wave fields at the right of the route where the typhoon Kompasu passes are applied for surface forcing, and temperature and salinity structures observed before the typhoon is used as an initial ocean condition. The LES model shows that turbulent intensity increases and surface mixed layer deepens during the typhoon as expected. In contrast to the vertical component of the turbulent intensity which is high in the middle of the mixed layer, its horizontal component is high very near the surface. Besides near the surface, the downwind direction component of the turbulent intensity is high near the bottom of the surface mixed layer while the crosswind direction component is low. With the comparison experiment to examine the effect of wind direction change, it is found that the change of wind direction influences the velocity field not only in the mixed layer but also below the thermocline.emperature and salinity structures observed before the typhoon is used as an initial ocean condition. The LES model shows that turbulent intensity increases and surface mixed layer deepens during the typhoon as expected. In contrast to the vertical component of the turbulent intensity which is high in the middle of the mixed layer, its horizontal component is high very near the surface. Besides near the surface, the downwind direction component of the turbulent intensity is high near the bottom of the surface mixed layer while the crosswind direction component is low. With the comparison experiment to examine the effect of wind direction change, it is found that the change of wind direction influences the velocity field not only in the mixed layer but also below the thermocline.