摘要
利用高空、地面实况探测、观测资料以及NCEP再分析资料,针对2015年5月7日夜间贵州出现的大范围强对流天气过程的中尺度特征及产生暴雨的水汽输送进行分析,结果表明:这次强对流天气是在有利的大尺度环流背景下生成的多个中尺度对流云团中产生,地面中尺度辐合区加强了对流的发展,冷空气的侵入增强了对流天气的剧烈程度,来自北部湾和阿拉伯海的水汽输送为暴雨天气的产生提供了所需的水汽条件。
With observed data and NCEP/NCAR reanalysis data, it is investigated that the mesoscale charac- teristics and transfer of water vapor of severe convective weather occurred in wide areas of Guizhou on May 7th, 2015. It shows that the severe convective weather arising from the profitable large scale circulation situation gener- ates a plurality of convective clouds. The convective is developed by mesoscale convergence at surface and en- hanced by the incursion of cold air. The heavy rain occurred by the transfer of water vapor from the North bay and Arabia sea.
出处
《贵州气象》
2016年第6期13-19,共7页
Journal of Guizhou Meteorology
基金
国家自然科学基金(41265005)
公益性行业科研专项(GYHY201506006)资助
关键词
强对流
中尺度特征
水汽输送
severe convective
mesoscale characteristics
transfer of water vapor
