摘要
利用济南多普勒雷达探测资料,参考美国国家强风暴实验室发展的中气旋探测算法,对2005年9月2日发生在山东鲁南地区的1次强降水事件中的中尺度涡旋结构及其演变特征进行了分析。结果表明:造成此次强降水过程的中尺度对流系统内存在1个尺度为20km左右的风切变区,其内包含1个尺度为10km左右的涡旋;该风切变区及其涡旋在4～6km高空处最明显,其首先于高空6km附近发展,然后向上、向下生长;它们的尺度和强度达到最大的时刻也是降水最强的时段。
Data of the Doppler radar at Jinan were used to analyze the mesoscale vortex structure and its evolution characteristics during a heavy rainfall event , which happened in south Shandong province on 2 Sep 2005. The Mesocyclone Detection Algorithm which was developed by the National Severe Storm Laboratory was employed in this paper. The results were outlined as.. （1） in the convective system, a vortex with the scale of 10 km was embedded in a wind shear zone with the scale of 20 km; （2） the wind shear zone and its vortex were the most significant at the height of 4-6 km; （3） they firstly developed at 6km height, and then expanded upward and downward, and （4） the pricipitation was the strongest when their scales were the largest and their intensity was the strongest.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第9期17-24,共8页
Periodical of Ocean University of China
基金
山东省科技发展计划项目(2010GSF10805)
公益性行业科研专项(GYHY201106010)资助
关键词
多普勒雷达资料
涡旋识别方法
切变区
中尺度涡旋
Doppler radar data
vortex identification method
shear region
mesoscale vortex
