夏邑一次短时强降水天气过程分析  

Analysis of a Short-time Heavy Precipitation Weather Process in Xiayi

作　　者：张艳玲 朱蒙 ZHANG Yanling;ZHU Meng(Shangqiu City Meteorological Bureau,Shangqiu Henan 476000)

机构地区：[1]商丘市气象局,河南商丘476000

出　　处：《河南科技》2020年第11期153-155,共3页Henan Science and Technology

基　　金：河南省农业气象保障与应用技术重点实验室应用技术研究基金项目“豫东地区强雨强的气候特征及预测方法研究”(KY201936)。

摘　　要：利用常规气象资料、雷达和自动站等探测资料,本文对2018年7月9日至10日商丘市夏邑县出现的局地暴雨大暴雨并伴有短时强降水天气进行分析。结果表明,本次大暴雨过程的主要影响系统是高空槽、切变线、地面倒槽;冷空气的扩散触发了地面暖倒槽中不稳定能量的释放;辐合主要出现在低层,而且辐合不强,这是商丘没有出现区域性暴雨的原因之一;假相当位温和k指数均较大;低空辐合、高空辐散有利于强降水的产生。By using conventional meteorological data,radar and automatic stations and other detection data,this pa⁃per analyzed the local rainstorm and downpour with short-term heavy precipitation that occurred in Xiayi County,Shangqiu City from July 9 to 10,2018.The results show that the main influence system of this heavy rain process is the high-altitude trough,shear line and ground trough;the diffusion of cold air triggers the release of unstable energy in the ground warm trough;convergence mainly occurs in the lower layer,and the convergence is not strong,which is one of the reasons why there is no regional rainstorm in Shangqiu;the false equivalents have relatively large moderate indices;low-level convergence and high-level divergence are conducive to the production of heavy precipitation.

关 键 词：局地 短时强降水 高空槽 切变线 地面倒槽 

分 类 号：P458.121.1[天文地球—大气科学及气象学]