激光测风雷达在城市近地层测风中的适应性观测试验  

Adaptive Observation Experiment of Wind Lidar in Urban Wind Detection at Near Surface Layer

作　　者：王亚东[1] 胡平[1] 尹春光[1] 郑杰[1] 

机构地区：[1]上海市气象信息与技术支持中心,上海200030

出　　处：《安徽农业科学》2016年第7期214-216,277,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究新型激光测风雷达在城市近地层测风中的适应性。[方法]2013年5~6月上海市气象信息与技术支持中心在上海市嘉定区和兴隆沙开展了2次新型测风雷达与梯度测风塔的观测对比试验,对2种探测手段测得的不同高度的水平风速、风向及其标准偏差、相关系数进行了对比分析。[结果]在嘉定区的对比试验中,虽然激光测风雷达与风能测风塔2种方式测得的风速值有一些差异,但2组数据有一定的相关性;风向的相关性明显好于风速,相关系数均在0.9以上。在兴隆沙的对比试验中,激光测风雷达与风能测风塔所获得的风速数据在各层高度上均具有良好的相关性,相关系数均在0.9以上;相比风速数据,风向数据在各层高度上的相关性较低。与嘉定区的对比试验相比,兴隆沙的对比试验在风速上的相关性表现较好,而在风向上则表现一般。[结论]2次对比试验的对比结果中水平风速、风向均有相关性达0.9以上的要素,能够在一定程度上验证新型激光测风雷达在低空风场数据获取方面具有较为良好的探测性能。[Objective] To research the adaptability of new wind lidar in urban wind detection at near surface layer. [Method]Two observation comparative trials between new wind lidar and gradient wind tower were carried out in Xinglongsha and Jiading District in Shanghai Meteorological Information and Technical Support Center from May to June,2013. Then,we compared the horizontal wind speed,wind direction,standard deviation and correlation coefficient at each altitude by two different methods. [Result]In the comparative trial of Jiading District,there were certain differences in the wind speed detected by two methods of wind lidar and gradient wind tower,but there was certain correlation between the two groups of data. Correlation of wind direction was significantly superior to that of wind speed; their correlation coefficients were greater than 0. 9.In the comparative trial of Xinglongsha,there was good correlation between wind data detected by wind lidar and gradient wind tower at different altitudes. Their correlation coefficients were greater than 0. 9. Compared with the data of wind speed,weed direction had relatively low correlation at each altitude. Compared with the comparative trial of Jiading District,wind speed in comparative trial of Xinglongsha showed relatively good wind speed,but wind direction was general. [Conclusion]Results of two comparative tests showed that both horizontal wind speed and wind direction have elements with more than 0. 9 correlation,which verifies in certain degree that wind lidar has relatively good detection performance in the aspect of low altitude wind field data.

关 键 词：激光测风雷达 近地层 风速 风向 适应性 观测试验 

分 类 号：S16[农业科学—农业气象学]