摘要
利用多普勒雷达、常规观测和地面加密观测资料,对2010年8月14日的特大暴雨的成因进行分析。结果发现:低层暖湿气流与高空冷空气相互作用是形成大暴雨的主要影响系统;850hPa切变线的存在为降水区提供了充沛的水汽和不稳定能量的堆积,在高空冷空气的触发下释放是产生大暴雨的主要原因。另外,垂直液态水含量对于大暴雨的演变趋势、降水量估测和降水落区有较好的指示意义。
The causes of torrential rain on august 14,2010 were analyzed using doppler radar,conventional observation and ground observation data.The result showed that the main cause was the interaction of low-level warm air and cold air at high altitude.850hPa shear line provides abundant moisture and instability energy and they released triggered by cold air at high altitude.In addition,the content of vertical liquid water would instruct the trends for the evolution of heavy rain,precipitation estimation and the precipitation area.
出处
《林业勘查设计》
2011年第3期116-118,共3页
Forest Investigation Design
关键词
大暴雨
切变线
垂直液态水含量
Heavy rain
Shear line
Vertical liquid water content
