摘要
本文采用常规探测资料、中尺度自动气象站资料、卫星云图以及中尺度数值模式输出的高分辨率资料对强热带风暴"碧利斯"的暴雨特征和成因进行分析;结果表明,在大陆高压、西太平洋高压的阻挡下,台风环流云系得到西南季风的补充作用,水汽热量和动力都得到大量补偿,从而大大推迟了台风环流的衰亡,造成"碧丽斯"超长的生命史和缓慢的移动速度,给华南地区带来持续强降水;环流云系中的中小尺度辐合线、强烈的上升运动、低层辐合高层辐散的配置以及华南地区的地形对环流维持和降水增幅具有十分重要的意义。
Observational data,mesoscale auto weather station data, satellite image and the MM5 data are used to analyze the characteristics and causes of rainstorm of strong tropical storm Bills. Blocked by subtropical high and added by southwest monsoon, the storm was compensated by vapor, heat and power. Typhoon maintainted persistently and moved slowly, and brought heavy rain to South China. The strong upward motion, the strong divergence at high level and the terrain in southern China are very important to maintain the circulation and increase precipitation.
出处
《气象科学》
CSCD
北大核心
2010年第1期93-98,共6页
Journal of the Meteorological Sciences
基金
浙江省重大科技攻关专项社会发展重点项目(2006C13025)
关键词
台风
暴雨
数值模拟
西南季风
辐合线
Typhoon Rainstorm Numerical simulation Southwest monsoon Cause analysis
