摘要
采用绝对误差、相对误差、皮尔逊相关系数、样本数量分布图等统计方法对中国气象局气象探测中心下发的2012年8月至2017年7月天气雷达组合风场显示产品进行质量评估,结果表明:①该产品与探空风场有较高的相关性,两种资料没有系统性差异,风向相关性优于风速;②随高度升高,该产品和探空资料的相关系数变差,500hPa以下高度的风场数据可用性较高;③产品质量与降水有着密切的关系,天气尺度的稳定性降水有利于提高风场反演质量,非气象回波、强对流天气情况下雷达反演风场质量均会下降。④产品质量与地形复杂程度有一定的关系。
Using the Pearson correlation coefficient,absolute and relative error,and scattered point diagram methods,the quality of the combined weather radar wind field(WID v1.0)display products are evaluated.The results show:(1)The product has higher correlation with radiosonde data;there is no systematic difference between the two data sets;and the wind direction correlation is better than the wind speed correlation.(2)As the height rises,the correlation coefficient between the two data sets decreases,and the wind field data availability is higher at altitudes below 500 hPa.(3)The quality of WID v1.0 products has closely relationship with precipitation types,and large-scale precipitation is conducive to improve the quality of wind field inversion.The product quality decreases in the situation of nonmeteorological echoes and strong convective weather.(4)The product quality has certain relationship with the complexity of terrain.
作者
安晶晶
邱学兴
王曙东
An Jingjing;Qiu Xuexing;Wang Shudong(Anhui Meteorological Observatory,Hefei 230031;Public Meteorological Service Center of CMA,Beijing 100081)
出处
《气象科技》
2019年第4期552-562,共11页
Meteorological Science and Technology
基金
安徽省气象局预报员专项(kY201701)资助
关键词
VWP组网产品
探空风场
质量评估
相关性分析
combined weather radar wind field
radiosonde wind field
quality assessment
correlation analysis
