Understanding the dynamical-microphysical-electrical processes associated with severe thunderstorms over the Beijing metropolitan region  

作　　者：Xiushu QIE Shanfeng YUAN Zhixiong CHEN Dongfeng WANG Dongxia LIU Mengyu SUN Zhuling SUN Abhay SRIVASTAVA Hongbo ZHANG Jingyu LU Hui XIAO Yongheng BI Liang FENG Ye TIAN Yan XU Rubin JIANG Mingyuan LIU Xian XIAO Shu DUAN Debin SU Chengyun SUN Wenjing XU Yijun ZHANG Gaopeng LU Da-Lin ZHANG Yan YIN Ye YU 

机构地区：[1]Key Laboratory of Middle Atmosphere and Global Environment Observation(LAGEO),Institute of A tmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [2]Key Laboratory of Cloud-Precipitation Physics and Severe Storms(LACS),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [3]Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089,China [4]College of Atmospheric Science,Chengdu University of Information Technology,Chengdu 610225,China [5]State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China [6]Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science&Technology,Nanjing 210044,China [7]Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China [8]College of Earth and Planetary Science,University of Chinese Academy of Science,Beijing 100049,China [9]Meteorological Observation Centre,Beijing Meteorological Bureau,Beijing 100081,China [10]Jiangxi Weather Modification,Nanchang 330096,China [11]Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences,Fudan University,Shanghai 200438,China [12]Department of Atmospheric and Oceanic Science,University of Maryland,Maryland 20742,USA

出　　处：《Science China Earth Sciences》2021年第1期10-26,共17页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.41630425,41671144074);the Key Research Program of Frontier Science,CAS(Grant No.QYZDJ-SSW-DQC007);the National Key Basic Research Program of China(Grant No.2014CB441401)。

摘　　要：The Dynamical-microphysical-electrical Processes in Severe Thunderstorms and Lightning Hazards(STORM973)project conducted coordinated comprehensive field observations of thunderstorms in the Beijing metropolitan region(BMR)during the warm season from 2014 to 2018.The aim of the project was to understand how dynamical,microphysical and electrical processes interact in severe thunderstorms in the BMR,and how to assimilate lightning data in numerical weather prediction models to improve severe thunderstorm forecasts.The platforms used in the field campaign included the Beijing Lightning Network(BLNET,consisting of 16 stations),2 X-band dual linear polarimetric Doppler radars,and 4 laser raindrop spectrometers.The collaboration also made use of the China Meteorological Administration’s mesoscale meteorological observation network in the Beijing-Tianjin-Hebei region.Although diverse thunderstorm types were documented,it was found that squall lines and multicell storms were the two major categories of severe thunderstorms with frequent lightning activity and extreme rainfall or unexpected local short-duration heavy rainfall resulting in inundations in the central urban area,influenced by the terrain and environmental conditions.The flash density maximums were found in eastern Changping District,central and eastern Shunyi District,and the central urban area of Beijing,suggesting that the urban heat island effect has a crucial role in the intensification of thunderstorms over Beijing.In addition,the flash rate associated with super thunderstorms can reach hundreds of flashes per minute in the central city regions.The super(5%of the total),strong(35%),and weak(60%)thunderstorms contributed about 37%,56%,and 7%to the total flashes in the BMR,respectively.Owing to the close connection between lightning activity and the thermodynamic and microphysical characteristics of the thunderstorms,the lightning flash rate can be used as an indicator of severe weather events,such as hail and short-duration heavy rainfall.Lightning da

关 键 词：Lightning 3D location Dual linear polarimetric Doppler radar Severe thunderstorm Lightning data assimilation HAIL Short-term heavy precipitation 

分 类 号：P446[天文地球—大气科学及气象学]