Analysis on Triggered Mechanism of a Hail Weather in Tianjin

• 作者: Chang Liu Hui Meng Ruijun Jin Xiaojun Guo
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 冰雹天气 触发机制 机制分析 天津 多普勒雷达资料 强对流天气 MICAPS 气象观测数据
• 年，卷（期）: 2013,（1）
• 页码范围: 13-17
• 页数: 5页
• 分类号: P458.121.2

摘要

[Objective]The research aimed to analyze triggered mechanism of a hail weather in Tianjin on July 10,2011.[Method] Using Micaps data,automatic meteorological observation data,sounding data and Doppler radar data,a hail process rarely happened in Daliutan Village,Yangliuqing Town,Xiqing District,Tianjin City on July 10,2011 was analyzed.Triggered mechanism of the hail weather was discussed.[Result]The hail weather was generated by super cell which was triggered by sea breeze front and ground convergence interaction.Upper situation was in front of the forward tilted trough at bottom rear of the cold vortex,which was favorable for development of the strong convective weather.On ground map,water vapor transportation existed in easterly airflow at bottom rear of the high-pressure.Meanwhile,convergence zone also existed.It was wet layer over 0 ℃ layer,and strong ascending motion existed,which was favorable for formation and development of the hail.Sea breeze front brought rich moisture,weak cold air and lifting effect when it moved toward inland from ocean,to make up for adverse conditions at low and middle layers.It could trigger a severely convective weather when moved to surface convergence zone.Doppler weather radar could monitor entire hail evolution process.[Conclusion]The research had obvious guidance significance for judging hail process.