四川盆地一次人工增雨作业前后降水和臭氧变化的对比分析  

Comparative Analysis of Changes in Precipitation and Ozone before and after an Artificial Precipitation Enhancement Operation in Sichuan Basin

作　　者：林丹[1,2] 王维佳 范思睿 刘平[1,2] LIN Dan;WANG Weijia;FAN Sirui;LIU Ping(Weather Modification Office of Sichuan Province,Chengdu 610072,China;Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072,China;Chengdu Meteorological Bureau,Chengdu 611133,China)

机构地区：[1]四川省人工影响天气办公室,四川成都610072 [2]高原与盆地暴雨旱涝灾害四川省重点实验室,四川成都610072 [3]成都市气象局,四川成都611133

出　　处：《成都信息工程大学学报》2021年第5期537-544,共8页Journal of Chengdu University of Information Technology

基　　金：四川省科技计划资助项目(2019YJ0621);四川省留学回国人员科技活动择优资助项目(2018-72);中国气象局云雾物理环境重点开放实验室开放课题资助项目(2019Z01602);高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金资助项目(省重实验室2018-青年-19)。

摘　　要：为对比分析四川盆地2020年5月的一次人工增雨影响的降水过程前后降水和臭氧的变化,基于成都、乐山和眉山站的地面气象台站和环境国控站资料,以及多普勒雷达、FY-4A卫星等数据,研究增雨作业前后各项云物理参数及臭氧浓度的变化特征。结果表明:2020年5月23-24日四川盆地出现一次大范围的积层混合云系降水过程。针对此次降水过程实施了人工增雨地面和飞机的联合作业。作业后雷达回波强度和强回波面积增大,云顶高度升高,云顶温度降低,云粒子有效半径增大,大部分过冷水云发展为混合云并出现少量冰云,催化作业对促进云层发展起到了积极的作用,作业区域普降小到中雨,地面雨量增加,臭氧浓度降低,空气质量转好。In order to compare and analyze the variations in precipitation and ozone before and after a precipitation process impacted by cloud seeding in Sichuan Basin on May 2020,based on the ground meteorological and environmental observation data from Chengdu,Leshan and Meishan,and the data from the Doppler radar and FY-4 A satellite,the variations of various doud microphysical parameters and ozone concentration before and after the precipitation enhancement operations were studied.The results show that a large scale precipitation process of cumulus mixed cloud system occurred in Sichuan Basin from May 23 to 24.For this precipitation process,a joint operation of artificial ground and airborne precipitation enhancement was implemented.After the operation,the radar echo intensity and strong echo area increased,the cloud top height increased,the cloud top temperature decreased,the cloud particle radius increased,and most of the super-cooled water clouds developed into mixed clouds and a few ice clouds.Catalytic operations of cloud seeding played a positive role in promoting the development of clouds,and the operation area was covered with light to moderate rain.After the occurrence of rainfall,with the increase of surface rainfall and the decrease of air temperature,ozone concentration decreased,and air quality improves.

关 键 词：气象学 人工增雨 臭氧 云粒子 FY-4A 

分 类 号：P426.67[天文地球—大气科学及气象学]