Numerical study on structure of meso-β scale rainstorm system during IOP523 of HUAMEX

作     者：Qingli Wu Min Chen Hongqing Wang Zuyu Tao 

作者机构：Department of Atmospheric Science College of Physics Peking University Beijing 100871 China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2002年第47卷第20期

页      面：1729-1733,1764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：This work was supported by the National Key Basic Research Development Programs (Grant Nos. G1998040907 and 95-zhuan-03) and the Visiting Scholar Foundation of Key Lab in Universities 

主　　题：heavy rainfall 3-D structure numerical simulation meso-β scale. 

摘      要：One of the scientific goals of HUAMEX (Torrential Rainfall Experiment over Both Sides of the Taiwan Strait and Adjacent Area), a special project in the National 863 Scientific Project, is to reveal meso-β scale structure of heavy rainfall. However, limited by the observational instruments, the resolution of the data attained from the outfield scientific observation network cannot reveal the meso-β scale structure. A 36-h numerical simulation of heavy rainfall case from May 23 to May 24, 1998 during IOP523 of HUAMEX was performed by the mesoscale numerical model of PSU/NCAR MM5, and the meso-p scale structure of con-vective system was examined based on the model output in this note. The results point out that the meso-β scale features of the heavy rainfall are clear considerably at low, middle and upper levels, respectively. There is a strong ageostrophic feature between the geopotential height field and the wind field on the upper level. The vertical cross sections of 54 km coarse grid and 18 km