安徽农业科学2011，Vol.39Issue(16)：9892-9895,4.
北海夏季一次强对流天气过程分析
Analysis on A Severe Convective Weather Process in Beihai in Summer
陈秋吉 1梁宝荣 1尹海燕1
作者信息
- 1. 广西北海市气象局,广西,北海,536000
- 折叠
摘要
Abstract
[Objective]The rescarch aimed to analyze a strong convective weather process in Beihai in summer.[Method] By using Micapsconventional data and the single station site information,radar data in Beihai,a strong convective weather process in Beihai City in August,2010 was analyzde.[Result] 850 and 700 hPa cyclonic low-pressure circulation in the north of Vietnam and Beibu Gulf coast was favorable for the transportation of Bengal Bay southwest airllow,which provided the sufficient water vapor condition for the stong precipitation.The interac-tion of weak cold air and southeast warm wet airflow was the main cause of the strong rainfall process.The strong precipitation.The interac-lated to the water vapor convergence. The maintenance of water vapor flux divergence field in southeast-northwest direction was favorable for the duration of strong precipitation in the south of Guangxi. Before the strong ptecipitation, the positive and negative vorticity in the high and low levels in Beihai station both abruptly strengthened, which was very favorable for generating the convection. The vertical velocity in the strong precipitation process turned from the positive value at the beginning to the negative value as the height variation. The turning had the in-dicated and early-warning roles on the generation of strong convective weather. [ Conclusion ] The research provided the theory basis for the strong convective weather forecast in Guangxi coast in summer.关键词
强对流/弱冷空气/过程分析/北海市Key words
Strong convection/ Weak cold air/ Process analysis/ Beihai City分类
天文与地球科学引用本文复制引用
陈秋吉,梁宝荣,尹海燕..北海夏季一次强对流天气过程分析[J].安徽农业科学,2011,39(16):9892-9895,4.
