气象2017，Vol.43Issue(11)：1354-1363,10.DOI:10.7519/j.issn.1000-0526.2017.11.004
福建春季西南急流暖湿强迫背景下的强对流天气流型配置及环境条件分析
Flow Pattern and Ambient Condition Analysis of Spring Southwest Low-Level Jet Warm Sector Severe Convection in Fujian
摘要
Abstract
Utilizing conventional meteorological data,the NECP reanalysis data,spring southwest jet warm sector severe convection flow pattern of Fujian is established by using mesoscale convective weather analysis technique.From the perspectives of the four basic conditions for the development of severe convection,namely the instability,moisture,lifting and wind vertical shear,the characteristics of spring southwest jet warm sector severe convection flow pattern of Fujian are revealed.Southwest jet warm sector severe convection flow pattern is characterized by low-level strong warm and moist adveetion over middle and high level troposphere's dry and cold air.The inversion,warm dry lid,mid-low level sufficient water vapor,upper dry and low moist vertical profile,low level convergence and high level divergence are all favorable to the development of severe convection.The severe convective weather is often triggered by the front of surface,the convergence line of surface or 925 hPa,hot low pressure of surface,pulsation of southwest jet.The severe convective weather sustainably develops when the convection moves to the favorable environment by the guidance of southwest jet.Strong vertical wind shear with high CAPE is favorable for the sustainable development of convective storm.关键词
强对流/西南急流/暖湿强迫/流型/环境条件Key words
severe convection/southwest jet/warm sector/flow pattern/ambient condition分类
天文与地球科学引用本文复制引用
冯晋勤,俞小鼎,蔡菁,赖巧珍..福建春季西南急流暖湿强迫背景下的强对流天气流型配置及环境条件分析[J].气象,2017,43(11):1354-1363,10.基金项目
中国气象局预报员专项(CMAYBY2014-034)、中国气象局关键技术集成项目(CMAGJ2015M30)和中国气象局2017年预报关键技术业务发展专项[YBGJXM(2017)02]共同资助 （CMAYBY2014-034）
