摘要
利用1°X1°NCEP再分析资料、全省遥测站资料、卫星云图、香港雷达图等资料,分析台风"韦森特"的环流背景场、物理量场特征,找出"韦森特"在南海中北部原地摆动和对珠三角南部强降水过程的物理成因:"韦森特"的原地摆动,与副热带高压、南海中部海温、还有台风内在的云系和风场结构的不对称有关;珠三角地区两侧附近存在弱的水汽通量辐合,在降水中心附近存在明显的上升运动,低层辐合、高层辐散,另外垂直螺旋场与降水中心的第一段降水期具有很好的对应关系。
Based on 1°×1° NCEP reanalysis data, the entire province telemetering station data, satellite cloud picture, radar map of Hong Kong, circulation background, physical quantity field characteristics of the typhoon ＂ Vicente＂ were analyzed to find out the causes for situ swing of ＂ Vicente＂ in the north- central part of the south China sea and the physical of the heavy rain process in southern of the pearl river delta： situ swing of ＂ Vicente＂ was connected with the central subtropical high, the south China sea SST, and typhoon internal structures and wind field structure of asymmetric; the first period of precipitation of raining center had a good corresponding relation with the existence of weak water vapor flux convergence near the both sides of the pearl river delta region, the significant upward movement near the center of precipitation and low-level convergence and high-level divergence, additional vertical helical field.
出处
《气象研究与应用》
2013年第4期1-8,I0001,共9页
Journal of Meteorological Research and Application
基金
基于用户的中山市气象服务平台.广东省气象局科研项目基金资助(编号:201029)
关键词
韦森特
异常路径
暴雨
海温
结构不对称
西南季风
Vicente
exception path
rainstorm
ocean temperature
asymmetric structure
southwest monsoon
