Impact of Updraft on Neutralized Charge Rate by Lightning in Thunderstorms:A Simulation Case Study

作     者：王飞 张义军 郑栋 

作者机构：State Key Laboratory of Severe WeatherChinese Academy of Meteorological Sciences(CAMS) Laboratory of Lightning Physics and Protection EngineeringCAMS 

出 版 物：《Journal of Meteorological Research》 (气象学报（英文版）)

年 卷 期：2015年第29卷第6期

页      面：997-1010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：Supported by the National Natural Science Foundation of China(41205001) National(Key)Basic Research and Development(973)Program of China(2014CB441406) National Major Scientific Instruments and Equipment Development Special(61327810) Basic Research Funds of CAMS(2012Y005 and 2013Z006) 

主　　题：lightning activity updraft neutralized charge charging rate charge amount 

摘      要：The rate of neutralized charge by lightning（RNCL） is an important parameter indicating the intensity of lightning *** total charging rate（CR）,the CR of one kind of polarity（e.g.,negative） charge（CROP）,and the outflow rate of charge on precipitation（ORCP） are proposed as key factors impacting RNCL,based on the principle of conservation of one kind of polarity charge in a *** this paper,the impacts of updraft on CR and CROP are analyzed by using a 3D cloud resolution model for a strong storm that occurred in Beijing on 6 September *** results show that updraft both promotes and inhibits RNCL at the same time.（1） Updraft always has a positive influence on *** correlation coefficient between the updraft volume and CR can reach *** of the updraft facilitates strengthening of RNCL through this positive influence.（2） Strengthening of the updraft also promotes reinforcement of *** correlation coefficient between the updraft volume and CROP is high（about0.9）,but this promotion restrains the strengthening of RNCL because the strengthening of CROP will,most of the time,inhibit the increasing of RNCL.（3） Additionally,increasing of ORCP depresses the strengthening of *** terms of magnitude,the peak of ORCP is equal to the peak of *** precipitation mainly appears after the lightning activity finishes,the depression effect of ORCP on RNCL can be ignored during the active lightning period.