摘要
利用常规观测资料及乡镇雨量站监测资料,对2015年6月23-25日河南省洛阳市一次暴雨过程进行分析。结果表明,500h Pa上高原低槽东移、700h Pa西南涡、850h Pa低涡切变、冷空气南下以及地面倒槽的维持发展,为此次暴雨的产生提供了有利的环流形势;暴雨中心主要位于水汽通量大值中心附近和前端等值线梯度密集带内;垂直方向深厚的水汽层和水汽通量辐合是产生此次暴雨过程的重要因素。
By using the conventional observation data and the monitoring data of township rainfall stations, a rainstorm process in Luoyang city of Henan province from 23 to 25 June 2015 was analyzed. The results showed that 500 hPa on the plateau trough moving eastward, 700 hPa southwest vortex, 850 hPa vortex shear, cold air southward and ground trough maintain circulation provided a favorable circulation situation for the rainstorm; rainstorm center is located near the center of water vapor flux value and front contour gradient intensive zone; the vertical direction of deep layer water vapor and water vapor flux convergence is an important factor of the rainstorm process.
作者
吴文华
Wu Wenhua(Luoyang Meteorological Bureau,Luoyang Henan 471000)
出处
《河南科技》
2017年第1期158-160,共3页
Henan Science and Technology
关键词
暴雨
环流形势
水汽通量
水汽通量散度
rainstorm
circulation situation
water vapor flux
water vapor flux divergence
