Recognition of Organizational Morphology of Mesoscale Convective Systems Using Himawari-8 Observations

作     者：SHOU Yi-xuan ZHANG Su-zhao LU Feng 寿亦萱;张肃诏;陆风

作者机构：Key Laboratory of Radiometric Calibration and Validation for Environmental SatellitesNational Satellite Meteorological Center(National Center for Space Weather)China Meteorological AdministrationBeijing 100081 China Innovation Center for FengYun Meteorological Satellite(FYSIC)Beijing 100081 China Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid RegionsYinchuan 750002 China Ningxia Key Laboratory of Meteorological Disaster Prevention and MitigationYinchuan 750002 China 

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

年 卷 期：2024年第30卷第3期

页      面：289-305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：National Natural Science Foundation of China(41965001) 

主　　题：mesoscale convective system satellite organizational morphology extremely heavy precipitation 

摘      要：The onset,evolution,and propagation processes of convective cells can be reflected by the organizational morphology of mesoscale convective systems(MCSs),which are key factors in determining the potential for heavy *** paper proposed a method for objectively classifying and segmenting MCSs using geosynchronous satellite *** of the product relative to the classification in radar composite reflectivity imagery indicates that the algorithm offers skill for discriminating between convective and stratiform areas and matched 65%of convective area identifications in radar imagery with a false alarm rate of 39%and an accuracy of 94%.A quantitative evaluation of the similarity between the structures of 50 MCSs randomly obtained from satellite and radar observations shows that the similarity was as high as 60%.For further testing,the organizational modes of the MCS that caused the heavy precipitation in Northwest China on August 21,2016(hereinafter known as the“0821rainstorm)were *** was found that the MCS,accompanied by the“0821rainstorm,successively exhibited modes of the isolated cell,squall line with parallel stratiform(PS)rain,and non-linear system during its life *** them,the PS mode might have played a key role in causing this *** findings are in line with previous studies.