2014年8月南京青奥会开幕式人工减雨作业回波分析  

Echo analysis on artificial reducing rain operation during the opening ceremony of the Youth Olympic Games in August 2014 of Nanjing

作　　者：倪思聪 魏鸣[1] 

机构地区：[1]南京信息工程大学中国气象局气溶胶与云降水重点开放实验室,南京210044

出　　处：《气象科学》2018年第1期104-112,共9页Journal of the Meteorological Sciences

基　　金：国家自然科学基金资助项目(41675029);国家重点基础研究发展计划973项目(2013CB430102);地理信息科学教育部重点实验室开放研究基金资助项目(KLGIS2015A01);中国气象科学研究院灾害天气国家重点实验室开放课题(2016LASW-B12)

摘　　要：为评估重大赛事活动场馆的人工减雨作业效果,利用南京信息工程大学C波段双偏振多普勒雷达(C-Pol NUIST)资料、探空及地面降水等资料,对2014年8月16日南京青奥会开幕式人工减雨作业效果进行分析。用交叉相关法TREC(Tracking Radar Echoes by Correlation)追踪回波单体,统计作业点上下游的回波强度比值的变化,分析了反射率因子、径向速度、回波顶高(ET)、差分反射率因子Zdr和相关系数ρ_(hv)的回波特征以及风矢位温(V-3θ)图表示的大气结构特征。研究表明,在减雨目标区的目标时段,回波强度和回波顶高均呈减弱趋势,减雨作业在播撒催化剂间歇时段和作业后会导致更显著的短时强降水。研究结果为回波产品评估人工减雨的最佳作业时间、作业部位和作业效果提供决策依据。For the assessment effect of artificial reducing precipitation rain operation of major events venues, the artificial reducing operation effect of Nanjing Youth Olympic Games opening ceremony on August 16, 2014 were analyzed with the data of dual polarization Doppler radar data（ C-Pol NUIST）, ra- diosonde and surface precipitation. Cell echo was tracked by using the TREC （Tracking Radar Echoes by Correlation） method. The changes of intensity echo ratio in the upstream and downstream of operation points were statistically analyzed. The echo characteristics of reflectivity factor （ dBz ） , radial velocity （Vr） , echo top height （ ET）, differential reflectivity factor （Zdr） and correlation coefficient （Phv） and the atmospheric structure characteristics of wind-potential temperature （V-30） plot were researched. Research results show that the echo intensity and echo top decrease within the area of opening ceremony during 18：00--22：00. It has more strong rainfall in both short periods in intermittent of seeding catalyst and after operation. The study conclusion can provide the decision-making basis for the optimal operation time, the work place and the effect of artificial rain reduction.

关 键 词：双偏振多普勒雷达 人工减雨 目标追踪 效果分析 

分 类 号：P412.25[天文地球—大气科学及气象学]