摘要
利用常规天气资料、其他物理量资料以及雷达产品资料等,对2015年6月9日甘肃省的对流天气进行了分析。研究表明,甘肃省这次强对流天气过程的主要影响系统是来自北支蒙古国的冷涡不断分裂南压、加强和维持造成的;低层辐合以及中高层深厚辐散的结合会产生上升运动,为强对流天气的发生、发展提供了动力条件;低层存在的浅薄湿层和明显的水汽辐合,再加上高层有较干的水汽垂直分布为冰雹天气的出现提供了有利的水汽条件;华亭以及礼县出现的强对流天气过程中是因为孤立发展的对流单体造成,而通渭、陇西等地的降雹天气以及阵性大风等天气现象是由于降水回波内的强对流单体造成的,由此可以说明,冰雹天气出现在强回波迅速发展的阶段并不是强盛时期。
The convective weather in Gansu Province on June 9^th, 2015 was analyzed , by using conventional weather data, other physical quantity data and radar product information, etc .The results showed that the main influencing system of the strong convective weather process in Gansu Province was from North to Mongolia cold eddy divide south pressure, strengthen and maintain ; Low-level convergence and the combination of high-level deep divergence would produce upward movement, which provided dynamic conditions for the occurrence and development of strong convective weather ; Lower wet of shallow layer and the obvious water vapor convergence, coupled with the top had the dry steam vertical distribution provided favorafile moisture conditions for the occurrence of hail weather ; The strong convective weather process of huating and Lixian County was caused by monomer because of the development of the isolated convection; And drop the hail weather and gustiness wind and other weather phenomenon of Tongwei, Xilong and other places was caused by strong convective monomer in the precipitation echo . Which showed that the hail weather was in strong echo fast developing stage and not rise.
出处
《农业灾害研究》
2016年第2期31-33,共3页
Journal of Agricultural Catastrophology
关键词
低涡
强对流
动力条件
冰雹
Low vortex
Strong con. vection
Dynamic conditions
Hail
