The upper ocean structure around the typhoon center and its relationship with the typhoon strength: A numerical study

摘要

In order to take deep look into the interaction between wave, ocean and atmosphere around the typhoon center, a high-resolution three-dimensional wave-ocean-atmosphere coupled model is used in order to enhance the understanding of the coupling mechanism between the ocean, atmosphere, wave at the typhoon center, including the dynamic procedure of the restratification of the upper ocean around the center of the typhoon and its relationship with the typhoon strength. The component models consist of the Weather Research and Forecasting (WRF) model, the Simulating Waves Nearshore (SWAN) model, and the Regional Ocean Modeling System (ROMS). The three models are coupled with the Model Coupling Toolkit. Using the idealized simulations, the role of the air-sea fluxes on the upper ocean structure and its relationship with the typhoon strength are investigated. Through this study, the dynamic processes of the typhoon center is understood, which provides a scientific basis to improve the accuracy of typhoon forecasting model, has an important scientific significance as well as the practical value.