摘要
运用天气学分析方法和V-3θ图结构分析方法,对2008年7月13-14日河南省中部、北部地区的突发性大暴雨过程进行了分析。结果表明:从常规天气学角度预报突发性暴雨难度较大,V-3θ图结构分析方法可以在一定程度上弥补天气学分析对突发性强降水预报能力的不足。在郑州、南阳及阜阳探空站的V-3θ图上,能明显看出此次暴雨过程中的水汽输送情况、不稳定层结和滚流的发展变化等特征。这些特征对预报河南暴雨的落区和持续时间有较好的指示意义。
The heavy rain which occurred in the middle and north part of Henan province on July 13-14,2008 was analyzed by using the synoptic analysis and V-3θ diagram.The result shows that it is difficult to forecast the sudden rainstorm by the conventional synoptic analysis,but the structure analysis method of the V-3θ diagram can offset the deficiency.From the V-3θ diagram of Zhengzhou,Nanyang and Fuyang sounding station,the water vapor conditions,unstable stratification and the development of tumble can be seen obviously.Combining these characteristics and the other synoptic diagnostic analysis,it gives the direction of the forecasting to the drop zone and duration of the rainstorm in Henan.
出处
《气象与环境科学》
2011年第2期49-53,共5页
Meteorological and Environmental Sciences
基金
河南省气象局科研项目"沙澧河上游关键区强降水预报方法研究"(Z200629)资助
关键词
V-3Θ图
超低温
顺滚流
the V-3θ diagram
the ultra-low temperature
the clockwise tumble
