Analysis of Supercell Storm Structure and Mesocyclone Parameters  

超级单体强度和中气旋参数分析(英文)

作　　者：刁秀广[1] 王月兰 朱君鉴[1] 

机构地区：[1]山东省气象台,山东济南250031 [2]山东省滨州市气象局,山东滨州256612

出　　处：《Meteorological and Environmental Research》2010年第4期61-64,共4页气象与环境研究（英文版）

基　　金：Supported by The Project from Department of Science and Technology of Shandong Province Under Grant No. 2007GG20008001 and 2010GSF10805

摘　　要：By using the high spatial and temporal resolution Jinan Doppler Weather Radar data and Jinan,Xingtai sounding data,the radar signature and mesocyclone parameters of 54 supercells during 2003-2008 were analyzed.The results showed that the probability of a supercell forming would be higher when SI (showalter index) ≤ -2℃,K (K index) ≥ 30℃ and 0-6 km wind shear>15 m/s.The supercell storms can generally be divided into two categories,namely,type of isolation and mosaic type.To the type of isolation,the max reflectivity,cell-based VIL,max reflectivity height,cell top,mesocyclone base and top were significantly higher than the mosaic type.Isolation-type supercells had significantly higher probability of hail,lower probability of gale than the mosaic category.The mesocyclone attribute differences between isolation-type and mosaic type supercells determined the differences of storm structures and severe weather phenomenon.By using the high spatial and temporal resolution Jinan Doppler Weather Radar data and Jinan,Xingtai sounding data,the radar signature and mesocyclone parameters of 54 supercells during 2003-2008 were analyzed.The results showed that the probability of a supercell forming would be higher when SI (showalter index) ≤ -2℃,K (K index) ≥ 30℃ and 0-6 km wind shear>15 m/s.The supercell storms can generally be divided into two categories,namely,type of isolation and mosaic type.To the type of isolation,the max reflectivity,cell-based VIL,max reflectivity height,cell top,mesocyclone base and top were significantly higher than the mosaic type.Isolation-type supercells had significantly higher probability of hail,lower probability of gale than the mosaic category.The mesocyclone attribute differences between isolation-type and mosaic type supercells determined the differences of storm structures and severe weather phenomenon.

关 键 词：Supercell structure Mesocyclone parameter HAIL GALE China 

分 类 号：P447[天文地球—大气科学及气象学]