An Introduction of Typhoon Forecast Operation at CTFC

The operation, observation and numerical model system of China typhoon forecast center (CTFC) is introduced in this paper. First of all, the operation system consists of two subsystems: typhoon forecast and marine weather forecast. The typhoon forecast subsystem is responsible for monitoring, forecasting and warning the tropical cyclones over Northwest Pacific Ocean and South China Sea, and monitoring TCs in other areas in the world. The marine weather forecast subsystem runs operations like monitoring and forecasting of disastrous weather like fog and gale taking place in China Sea areas, as well as publishing maritime satellite products in responsible areas. Second, the observation system includes conventional observation subsystem and unconventional observation subsystem, both of which are responsible for collection and application of the observation data. The conventional subsystem consists of surface automatic stations, island stations, buoys and upper-air soundings. The unconventional subsystem consists of satellite, RADAR, and GPS. Finally, the numerical model system includes global, regional, and ensemble models. The global models include T213 model and T639 model, GRAPES-TYM model is a regional model, and ensemble data including T213 model and super model products.