SIMULATION OF TROPICAL CYCLONES OVER THE WESTERN NORTH PACIFIC AND LANDFALLING IN CHINA BY REGCM4

作     者：WU Jie GAO Xue-jie 吴婕;高学杰

作者机构：Climate Change Research CenterInstitute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029 China University of Chinese Academy of SciencesBeijing 100049 China Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science&TechnologyNanjing 210044 China 

出 版 物：《Journal of Tropical Meteorology》 (热带气象学报（英文版）)

年 卷 期：2019年第25卷第4期

页      面：437-447页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：Strategic Priority Research Program of the Chinese Academy of Sciences(DA20060401) National Natural Science Foundation(41375104) 

主　　题：climatology tropical cyclone RegCM western North Pacific landfall 

摘      要：This study evaluates the performance of the regional climate model RegCM4 in simulating tropical cyclone(TC) activities over the Western North Pacific(WNP) and their landfalling in China. The model is driven by ERA-Interim boundary conditions at a grid spacing of 25 km, with the simulation period as 1991-2010. Results show that RegCM4 performs well in capturing the main structural features of observed TCs, and in simulating the genesis number and annual cycle of the genesis. The model reproduces the general pattern of the observed TC tracks and occurrence frequency. However, significant underestimation of the occurrence frequency as well as the TC intensity is found. Number of the landfalling TCs over China is also much smaller than that of the observed. Bias of the model in reproducing the large-scale circulation pattern and steering flow may contribute to the underestimated landfalling TC numbers.