重污染天气条件背景下风廓线雷达数据特征初探  

Wind profile radar data characteristics on heavy pollution weather background

作　　者：金龙[1] 幺伦韬[1] 阮征[2] 毛飞[1] 敬颖 陈华彬[4] Jin Long;Yao Luntao;Ruan Zheng;Mao Fei;Jing Ying;Chen Huabin(Hebei Provincial Meteorological Technical Equipment Center,Shijiazhuang 050051,China;Chinese Academy of Meteorological Sciences,Beijing 100081,China;Hebei Meteorological Service,Shijiazhuang 050051,China;Beijimg Institute of Radio Measurement,Beijing 100854,China)

机构地区：[1]河北省气象技术装备中心,石家庄050051 [2]中国气象科学研究院,北京100081 [3]河北省气象局,石家庄050051 [4]北京无线电测量研究所,北京100854

出　　处：《国外电子测量技术》2018年第7期40-44,共5页Foreign Electronic Measurement Technology

基　　金：河北省气象局科研开发项目(16kyd07)资助

摘　　要：基于石家庄观测站2016年12月15日-23日重污染天气过程期间CFL-06风廓线雷达资料,分析了数据获取率、信噪比、谱参数、水平风和大气折射率结构常数数据特征。重污染天气背景下3种探测模式5个探测波束的数据获取率均在60%以上,信噪比值、回波强度值和速度谱宽值具有日变化特征,垂直速度基本维持在-0.5-0.5m/s,CN2维持在低值区,南风增强时,污染物浓度升高,反应出污染物的输送特征,回波强度随高度的增加具有＂小-增大-减小＂的趋势。Using the CFL-06 wind profile radar,a heavy pollution weather event was observed and studied,which occurred in ShiJiazhuang from 15 December to 23 December 2016.It analyzes the characteristics of data acquisition rate,signal-to-noise ratio,spectral parameters,horizontal wind and refractive index structure constant.In the background of haze weather,the data acquisition rate of all three detection modes is above 60%.The signal-to-noise ratio,reflectivity and velocity spectrum width are characteristic of daily variation.The vertical velocity is basically maintained between-0.5-0.5 m/s,CN2 is maintained in the low value area.With the south strengthened wind,the concentration of pollutants rises and reflects the transport characteristics of pollutants.The increase reflectivity with height has the tendency of ＂small-increase-decrease＂.

关 键 词：风廓线雷达 重污染天气 数据特征 

分 类 号：X83[环境科学与工程—环境工程] TN95[电子电信—信号与信息处理]