摘要
选取2019年7月16日—17日发生在河西走廊西段酒泉地区的一次暴雨天气过程为研究对象,利用高空资料、地面资料、数值预报产品对此次暴雨过程的环流背景、影响系统、物理条件进行诊断分析,在此基础上结合当地湿度条件、大气运动状态、以及肃北蒙古族自治县和酒泉市k指数变化,得到如下结论:“东高西低”的大气环流形式,“歪脖子”高压对冷空气的阻挡、充足的水汽供应、气流强烈的上升运动以及增大的k指数是造成此次暴雨天气的环流影响因素。
A heavy rain weather process that occurred in the Jiuquan area of the western section of the Hexi Corridor from July 16 to 17,2019 was selected as the research object.The high-altitude data,ground data,and numerical forecast products were used to influence the circulation background,influence system,and physics of the heavy rain process.The conditions are diagnosed and analyzed,and on this basis,combined with local humidity conditions,atmospheric movement status,and changes in the k-index in Subei Mongolian Autonomous County and Jiuquan City,the following conclusions are drawn:the"high in the east and low in the west"form of atmospheric circulation is"crooked neck"The blocking of cold air by high pressure,sufficient water vapor supply,strong upward movement of airflow,and increased k-index are the influencing factors for the circulation of this heavy rain.
作者
王海燕
鲁岳
WANG Hai-yan(Jiuquan Meteorological Bureau,Jiuquan,Gansu 735000)
出处
《农业灾害研究》
2020年第7期47-48,56,共3页
Journal of Agricultural Catastrophology
关键词
河西走廊西段
暴雨
分析
West section of Hexi Corridor
Rainstorm
Analysis
