摘要
应用常规观测资料、卫星云图、风廓线雷达资料以及NCEP1°×1°再分析资料,对2012年5月29日至30日发生在云南省大理州的首场区域性暴雨天气进行分析,结果表明:700 hPa切变线是这次降水的主要天气系统,高空冷平流的入浸触发了长时间的晴热天气积蓄的充足能量;卫星云图上强降水云团在夜间发展,白天消失,与云贵高原多夜雨的特征一致;强降水发生区域的上空对流活动旺盛、大气层结极不稳定;水汽辐合明显,且有强烈的上升运动;风廓线雷达资料的信噪比和垂直速度有反映,但特征不是非常明显,可能与大理本站的降雨强度不大有关;水平风垂直变化上明显反映出高空冷平流的入浸时间及持续时间.
Application general observation information,and satellite imagery,and wind profile line radar information and NCEP 1 ° X1 ° again analysis information,on May 29,2012 to 30th occurred in Yunnan province Dali of first culture storm weather for analysis,results indicates that:700 hPa shear line is this precipitation of main weather system,height cold flat flow of into dip triggered has long time of fine hot weather savings of adequate energy;satellite imagery Shang strong precipitation clouds in night development,day disappear,and Yunnan-Guizhou plateau more night rain of features consistent;Heavy rain in regions of strong convective activity,atmospheric structure far from stability;water vapour convergence significantly,rising and there is a strong sense of movement.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第S2期254-261,共8页
Journal of Yunnan University(Natural Sciences Edition)
关键词
区域暴雨
环流形势
大气物理量特征
regional rainstorm
circulation
characteristics of the atmospheric physics
