Analysis of Characteristics of a Heavy Rainstorm Process in Nanchang City on July 7,2020
作者机构：Chongqing BranchSouthwest Air Traffic Management BureauCivil Aviation Administration of ChinaChongqing 401120China Nanchang Meteorological BureauNanchang 330038China
出 版 物：《Meteorological and Environmental Research》 (气象与环境研究（英文版）)
年 卷 期：2024年第15卷第1期
页 面：1-7,11页
学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学]
主 题：Short-term heavy precipitation Mesoscale system Train effect Meiling landform
摘 要：Based on the conventional observation data,dual polarization radar data and NCEP reanalysis data,the large-scale circulation background field,mesoscale conditions and formation causes of a heavy rainstorm in Nanchang on July 7,2020 were *** was found that this heavy rainstorm occurred under the weather background of the confrontation between the northward air flow behind the trough and the strong southwest warm and humid air flow to the northwest of the subtropical *** divergence at the upper level,the shear in the middle and low levels,the southward movement of cold air at the low level,unusually abundant water vapor and high unstable energy caused the heavy rainstorm *** this process,under the influence of continuous eastward movement of several strong echo cells,an obvioustrain effectwas formed in Nanchang,so that the local rainfall was continuous and ***,the average of VIL was about 17 kg/m 2,and its variation characteristics were consistent with the variation trend of 5-min rainfall intensity,which had a certain indicator effect on short-term heavy *** topography of the Meiling Mountain in the west of Nanchang had a great influence on the formation and precipitation distribution of the heavy rain *** was a strong rainstorm center near the mountain,and the precipitation was obviously larger than that in the plain area.
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