气象Issue(1)：14-25,12.DOI:10.7519/j.issn.1000-0526.2016.01.002
一次雷暴单体相互作用与中气旋的演变过程分析
Analysis on Interaction of Thunderstorms and Evolution of Mesocyclones
摘要
Abstract
Thunderstorms were generated in a weak vertical wind shear and strong unstable environment beginning from noon 1 August 2013 in Shanghai.During the developing process of the thunderstorms, three mesocyclones were detected,and especially during the formation of the second mesocyclone,charac-teristics of a classic supercell were found after the merging of two storms,such as low-level hook,pendant echoes,mesocyclone and TBSS (three-body scatter spike).Using conventional weather observations,dual Doppler radar data,automatic weather station data and wind profile radar data,the main formation mecha-nisms of the first two mesocyclone’s were found to be as follows:(1 )the join of the previous thunder-storms’outflow strengthens the environmental convergence and intensifies the lift of warm and moist air. (2)The outflow of thunderstorms strengthens the low-level vertical wind shear which is favorable for the formation of mesocyclone.In addition,due to the merging of the two thunderstorms,the intensified up-draft and the strengthened rotation of the strom play important roles in the formation of the supercell me-socyclone.Then,during the formation of the third mesocyclone,the outflow of the storm was lifted by the downdraft of the adjacent storm,thus the rotation of the outflow and inflow in the mid and low-level was detected as the mesocyclone.关键词
中气旋/阵风锋/雷暴合并/超级单体/双多普勒雷达反演风场Key words
mesocyclone/gust front/storm merging/supercell/dual Doppler radar wind field retrieval分类
天文与地球科学引用本文复制引用
陶岚,戴建华,孙敏..一次雷暴单体相互作用与中气旋的演变过程分析[J].气象,2016,(1):14-25,12.基金项目
国家自然科学基金项目（41175050）和公益性行业（气象）科研专项（GYHY201006002）共同资助 （）
