摘要
利用MICAPS资料和NCEP 1°×1°再分析资料,从环流特征、水汽条件、冷空气侵入作用及垂直结构等方面对宿迁2014年7月24—25日暴雨-大暴雨过程进行综合分析。结果表明,副高和大陆高压之间的低槽是影响"麦德姆"登陆后路径改变的主要系统;低空南到东南风急流的维持,为暴雨的产生提供充足的水汽供应和不稳定能量;冷空气的侵入使台风斜压性加强,促使对流快速迅速增强,加之深厚的垂直环流稳定维持,是此次台风暴雨形成的重要机制。
Using the MICAPS data and NCEP 1°×1° reanalysis data, the heavy rain - heavy rain process of Suqian in July 24 to 24, 2014 were comprehensive analyzed from the follow- ing aspects ,including circulation characteristics, water vapor condition, cold air intrusion, the vertical structure and so on .The results showed that low trough between subtropical high and continental high pressure was the main system which changing the path ＂Matmo＂ after landing. The maintain of low south to southeast wind provided adequate water supply and unstable energy for the heavy rain. The cold air intrusion strengthened the typhoon baroclinicity, prompted the con- vection rapidly rapid increase, and the deep vertical circulation steady were the important formation mechanism of typhoon heavy rains.
作者
庞礴
程昕
周航
王睆
李泽宇
张莹
PANG Bo et al(Suqian Meteorological Bureau in Anhui Province, Suqian Jiangsu 22380)
出处
《农业灾害研究》
2016年第10期33-37,共5页
Journal of Agricultural Catastrophology
关键词
台风暴雨
水汽输送
低空急流
冷空气
垂直结构
Typhoon rainstorm
Wa- ter vapor transmission
The low level jet
Cold air
Vertical structure
