摘要
采用WRFV3.01模式对2010年7月18—20日发生在华北地区的西南涡暴雨过程进行了模拟与分析。结果表明:这次西南涡暴雨主要降水机制是高低空急流的耦合。暴雨出现在低空急流的前方和高空急流的右后方;高空急流为强降水提供了高层的辐散场和高层的干冷空气,低空急流为降水区提供了充足的水汽和能量;这次西南涡降水有明显的暖锋降水性质。
the southwest vortex rainstorm was simulated and analyzed that happened in North China on July 18-20, 2010 using WRFV 3.01 pattern. The results showed that the main precipitation mechanism of this southwest vortex rainstorm was the coupling of high-low level jet. The rainstorm appeared in the front of low level jet and in right rear of upper-level jet stream. The upper-level jet stream provided higher-rise divergence field and dry. cold airs, the low-level jet stream provided enough water vapour and energy for precipitation area. This southwest vortex rainstorm had obvious warm front nature.
出处
《内蒙古气象》
2015年第1期3-8,共6页
Meteorology Journal of Inner Mongolia
关键词
西南涡暴雨
数值模拟
诊断分析
southwest vortex rainstorm
numerical simulation
diagnostic analysis
