The results show that some obvious improvements can be obtained for the track forecasting by using ensemble members formed by the data of initial fields of the 3 different numerical models.

We summarize some special circulation from its structure and background circulation, and these are important experience for the prediction of cyclone in South China Sea in the future.

With the numerical sea current and wave model, the sea current and wave in the South China sea under the actions of the tropical cyclone high wind speed were numerically simulated.