南昌市一次对流性降水过程雨滴谱特征分析  

Analysis of Raindrop Spectrum Characteristics in a Convective Precipitation Process in Nanchang

作　　者：于泽华 谭立坤 吕振东 陈晓磊 YU Zehua;TAN Likun;LYU Zhendong;CHEN Xiaolei(Meteorological Bureau of Anyi County,Nanchang Jiangxi 330500;The Meteorological Service Center of Jiangxi Province,Nanchang Jiangxi 330046)

机构地区：[1]安义县气象局,江西南昌330500 [2]江西省气象服务中心,江西南昌330046

出　　处：《河南科技》2021年第20期141-143,共3页Henan Science and Technology

基　　金：江西省气象局2020年青年人才项目“基于DSG5探测数据的南昌降水雨滴谱特征研究”(JX2020Q07)。

摘　　要：利用南昌市国家气候观象台站内布设的DSG5型降水现象仪的雨滴谱观测数据以及自动气象站小时降水数据、卫星、雷达等观测数据,对2019年6月6日南昌市的一次对流性降水天气过程进行雨滴谱特征分析。结果表明:此次对流性降水过程以小于1 mm的小雨滴为主,最大直径为2.29 mm,1 mm以下降水粒子占98.8%。雨滴谱观测数据与自动站观测的过程雨量数据相关性较好。雨强、雷达反射率、粒子数浓度及降水粒子含水量的演变趋势均呈多峰型波动,相关性较好,说明降水云的对流发展不均匀。Using the raindrop spectrum data of the DSG5 precipitation instrument deployed at the Nanchang National Climatic Observatory,as well as the Automatic weather station precipitation data,satellite and radar data,the raindrop spectrum characteristics of a convective precipitation process in Nanchang on June 6,2019 were analyzed.The results show that the convective precipitation process is dominated by small raindrops less than 1 mm,the maximum diameter is 2.29 mm,and the proportion of precipitation particles below 1 mm is 98.8%.The correlation between raindrop spectrum data and process rainfall data observed by automatic weather station is good.The variations of rainfall intensity,radar reflectivity,particle number concentration and precipitation particle water content are all in multipeak pattern with good correlation,which indicates that the convective development of precipitation cloud is not uniform.

关 键 词：雨滴谱 对流性降水 特征 

分 类 号：P458.121[天文地球—大气科学及气象学]