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Charge Structure of a Summer Thunderstorm in North China:Simulation Using a Regional Atmospheric Model System

查看全文 作　　者：LIU [1,2]Dongxia;QIE [1,2]Xiushu;PENG [3]Liang;LI [4]Wanli 高影响力作者 机构地区：[1]Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics,Chinese Academy of Sciences;[2]Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science & Technology;[3]National Center of Atmospheric Research;[4]China Meteorological Administration Training Center高影响力机构 出　　处：《Advances in Atmospheric Sciences》索引2014年第31卷第5期,共13页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (Grant Nos.41175002, 40930949);National Key Basic Research Program of China (2014CB441401) 摘　　要：Electrification and simple discharge schemes are coupled into a 3D Regional Atmospheric Model System(RAMS) as microphysical parameterizations, in accordance with electrical experiment results. The dynamics, microphysics, and electrification components are fully integrated into the RAMS model, and the inductive and non-inductive electrification mechanisms are considered in the charging process. The results indicate that the thunderstorm mainly had a normal tripole charge structure.The simulated charge structure and lightning frequency are basically consistent with observations of the lightning radiation source distribution. The non-inductive charging mechanism contributed to the electrification during the whole lifetime of the thunderstorm, while the inductive electrification mechanism played a significant role in the development period and the mature stage when the electric field reached a large value. The charge structure in the convective region and the rearward region are analyzed, showing that the charge density in the convective region was double that in the rearward region. 关 键 词：电荷结构 模式系统 中国北方 大气 模拟 雷雨 收费 暑期
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