人民长江Issue(8)：27-31,5.DOI:10.16232/j.cnki.1001-4179.2015.08.007
基于多信息源的强降水过程综合分析
Anaiysis of a heavy rainfaii event using muitipie sources information
摘要
Abstract
By using the multiple sources of information,including the European Centre Re - Analysis data(ERA - Interim), the L - band second - level sounding data and the SA - RADER data,we analyzed the typical heavy rainfall cases in South China to research the formation and evolution mechanism of heavy - rain - producing and intense convective systems and improve the rainstorm pre - warning ability. The research shows that the wind direction in heavy rainfall area turnes clockwise as the altitude increases;CIN over the area was very little,and LCL was very low,meaning that a little updraft could trigger convection. During the convective stormˊs mature stage,an obvious echo - training pattern is observed with convective cells moved northeast along the 700hPa steering airflow. Before the rainfall,the relative humidity in 700 hPa precipitation area exceeds 70% ,and θe reaches high value area in 925hPa area. These indexes in advance of a rainfall event show great forecasting significance.关键词
强降水/环流背景场/探空资料/雷达回波Key words
heavy rainfall/synoptic situation background/sounding data/RADAR echo分类
建筑与水利引用本文复制引用
孙嘉翔,罗亚丽,周定文,范广洲..基于多信息源的强降水过程综合分析[J].人民长江,2015,(8):27-31,5.基金项目
公益性行业科研专项“南海季风爆发前后华南强对流天气发生发展机制与数值预报技术研究” （）
