风廓线雷达资料在强降水过程中的特征及应用  

作　　者：梁宸 詹鸿宇 刘箩石 

机构地区：[1]中国民用航空中南地区空中交通管理局广西分局,南宁530048

出　　处：《科技创新与应用》2023年第31期110-113,共4页Technology Innovation and Application

摘　　要：该文通过对比分析南宁机场2次降雨过程的边界层风廓线雷达探测数据,研究强降水天气过程风廓线雷达水平风场、垂直速度、最大探测高度与降雨强度之间的相关性。结果表明,低空急流、高空急流的耦合发展有利于降水强度的增强,低空急流向下扩展的程度与降水强度之间呈正相关;强降水开始前,风廓线雷达最大探测高度会出现突增,其增大的程度与降水强度呈正相关;垂直速度的变化与降水的开始时间、结束时间、雨强变化相对应,降水强度与下沉气流强度呈正相关,与最大下沉速度所在高度呈负相关。In this paper,the correlation between the horizontal wind field,vertical velocity,maximum detection height of the wind profilerand the rainfall intensity in the process of heavy precipitation is studied by comparing and analyzing the detection data of boundary layer wind profile radar during two rainfall processes in Nanning Airport.The results show that the coupling development of upper-level jet stream and low-level jet stream is conducive to the enhancement of precipitation intensity,and the degree of downward expansion of low-level jet stream is positively correlated with precipitation intensity.Before the onset of heavy precipitation,the maximum detection height of a wind profile radar will sharply increase,and the degree of increase is positively correlated with the intensity of the precipitation.The change of vertical velocity corresponds to the change of precipitation beginning time,end time and rain intensity.The precipitation intensity is positively correlated with the downdraft intensity and negatively correlated with the height of the maximum downdraft velocity.

关 键 词：风廓线雷达 强降水 急流 最大探测高度 垂直速度 

分 类 号：P413[天文地球—大气科学及气象学]