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A Review on GRAPES-TMM Operational Model system at Guangzhou Regional Meteorological Center

Journal of Tropical Meteorology 2020年第4期26卷 495-504页

作者： ZHONG Shui-xin CHEN Zi-tong XU Dao-sheng DAI Guang-feng MENG Wei-guang ZHANG Cheng-zhong ZHANG Yan-xia WU Kai-xin FENG Ye-rong CHEN De-hui XUE Ji-shan Guangdong Provincial Key Laboratory of Regional Numerical Weather Prediction/Guangzhou Institute of Tropical and Marine Meteorology China Meteorological AdministrationGuangzhou 510641 China

This review summarizes the general developments of the operational mesoscale model system based on the Global/Regional Assimilation and Prediction system-Tropical Monsoon Model (GRAPES-TMM) at the Guangzhou Regional Meteorological Center. GRAPES-TMM consists of the Tropical Regional Atmospheric Model system for the South China Sea (TRAMS, a typhoon model with a horizontal resolution of 9 km), the Mesoscale Atmospheric Regional Model system (MARS, 3km) and the fine-scale Rapid Update Cycling (RUC, 1km) forecasting system. The main advances of model dynamical core and physical processes are summarized, including the development of the 3D reference atmosphere scheme, the coupling scheme between dynamics and model physics, the calculation of nonlinear terms by fractional steps, the gravity wave drag scheme induced by sub-grid orography and a simplified model for landsurface scheme. The progress of model applications is reviewed and evaluated. The results show that the updated 9-3-1forecasting system provides an overall improved performance on the weather forecasting in south China, especially for typhoon-genesis and typhoon-track forecasting as well as short-range weather forecasting. Capabilities and limitations as well as the future development of the forecasting system are also discussed.

关键词： GRAPES-TMM TRAMS physical processes 9-3-1 forecasting system

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