摘要
利用2019年6—12月威宁县边界层风廓线雷达数据和威宁探空数据,预设二者风速偏差≤3 m·s^(-1)、风向偏差≤20°为有效数据样本,对两者在不同风速、风向范围和不同高度、时次、降水条件下风向、风速数据进行对比及相关性分析。结果表明:①风廓线雷达和探空的风速、风向均具有较好的正向相关性;②在不同高度下,无论有无降水或任意时次,风速有效样本比率大体上高于风向有效样本比率,500 m左右高度以下有效样本比率总是最小(<50%),而中高层较大;③不同时次对风速、风向数据有效性影响不大;④有降水时风速、风向有效样本比率比无降水时偏小且变化剧烈;⑤除东北(20°~40°)和西南(200°~260°)风向外,其他方位风向数据一致性较差;⑥除>24 m·s^(-1)的风速外其他大小风速均具有较好的一致性。
Using the boundary layer wind profiler radar data and the high altitude detection system wind field data from June to December 2019 in Weining County,the valid data samples are pre-set with the wind speed deviation≤3 m·s^(-1) and the wind direction deviation≤20 degrees.The comparison and correlation analysis of the wind direction and wind speed data under different wind speed,wind direction range and different height,time,precipitation conditions are studied.The results show that:①Wind profiling radar and altitude detection system have good positive correlation in wind speed and direction;②At different heights,the ratio of effective samples of wind speed is higher than that of effective samples of wind direction,with or without precipitation or at any time.The ratio of effective samples below 500 meters is always the smallest(less than 50%)and the middle and upper levels are larger.③Different times have little effect on the validity of wind speed and direction data;④The effective sample ratio of wind speed and direction with precipitation is smaller and more variable than that without precipitation;⑤The consistency of wind direction data in other directions is poor except for the northeast(20~40 degrees)and southwest(200~260 degrees).⑥All the wind speeds except those larger than 24 m·s^(-1) have good consistency.
作者
杨哲
李源
张玉逵
陈银东
YANG Zhe;LI Yuan;ZHANG Yukui;CHEN Yindong(Guizhou Provincial Center for Atmospheric Detection Technology and Support,Guiyang 550081,China;Guizhou Weather Modification Office,Guiyang 550081,China;Guizhou Meteorological Service Center,Guiyang 550002,China;Weining Meteorological Bureau of Guizhou Province,Weining 553100,China)
出处
《中低纬山地气象》
2022年第6期29-33,40,共6页
Mid-low Latitude Mountain Meteorology
基金
贵州省气象局科研业务项目(黔气科登[2020]11-06号):风廓线雷达在降水天气监测中的应用
国家自然科学基金(4187050298):雹胚形成及演变的微物理环境与热动力特征的观测研究
贵州省科技支撑计划项目(黔科合支撑[2019]2387号):雹胚形成演变微物理环境条件观测与模拟试验研究。
关键词
风廓线雷达
探空
风速
风向
相关性
有效样本
wind profile radar
altitude detection
wind speed
wind direction
correlation
valid samples
