气象2017，Vol.43Issue(1)：56-66,11.DOI:10.7519/j.issn.1000-0526.2017.01.006
对流移入杭州湾后飑线发展机制分析
Analysis on Influence of Convection After Moving into Hangzhou Bay on the Development of Squall Line
摘要
Abstract
Anstract:To enhance the understanding of the squall line maintaining mechanism under influence of Hang-zhou Bay,the diagnosic analyses are made on the squall line in northern Zhejiang on 27 July 2014,using Doppler radar data,convectional and densely-observed surface data and NECP GFS data.The focus is on the evolution of convection that moved into Hangzhou Bay from the north and the south coasts and its effect on the overall development of squall lines.The result indicates that the north-south convergence lines and moderate strength of deep vertical wind shear are the key environmental factors of the generation and development of the squall line event.Convections are strengthened after moving into Hangzhou Bay from the north and the south coasts,leading to squall line maintaining.The better moisture conditions and unstable energy conditions in Hangzhou Bay result in the further strengthening of convection from the north shore of Hangzhou Bay,and the connection of two linear convections in southern Jiangsu,northern Zhejiang as well as the sustainable development of the squall line.The temperature and humidity on the surface of Hangzhou Bay is equal to the surface of south coast,and the strong wind shear in Hangzhou Bay leads to the maintaining strength of the convection into Hangzhou Bay from the south coast.Under the in-teraction of cold pool and rear inflow,bow echo develops on the sea,becoming an important factor for the maintenance of the squall line.关键词
飑线/强度变化/杭州湾/机制Key words
squall line/strength change/Hangzhou Bay/mechanism分类
天文与地球科学引用本文复制引用
高梦竹,陈耀登,章丽娜,王芳..对流移入杭州湾后飑线发展机制分析[J].气象,2017,43(1):56-66,11.基金项目
国家重点基础研究发展计划（973计划）（2013CB430102）、国家自然科学基金面上项目（41675102）、中国气象局预报员专项（CMAY-BY2015-096）及南京信息工程大学气象灾害教育部重点实验室开放课题基金（KLME1311和KLME1507）共同资助 （）
