风廓线雷达风场资料质量控制初探

基于2016年2月和8月江西宜春风廓线雷达探测水平风场数据,分别利用扩展经验正交函数(EOF)分析重构法和高斯滤波法对其进行质量控制。结果发现,相比原始观测风场,EOF分析重构法和高斯滤波法均能有效过滤风廓线雷达原始风场的高频脉动。两种方法对比分析发现,对于空间尺度的瞬时扰动,EOF分析重构法质控效果优于高斯滤波法;对于时间尺度的瞬时扰动,高斯滤波法质控效果优于EOF方法。

Preliminary study on quality control of wind data of wind profile radar

Based on the horizontal wind field data of wind profile radar in Yichun of Jiangxi in February and August 2016, the extended empirical orthogonal function (EOF) analysis reconstruction method and Gaussian filtering method were used for quality control. Compared to the original observation wind field, the high frequency pulsation of original wind field of wind profile radar can be effectively filtered by EOF analysis reconstruction method and Gaussian filtering method. The comparison between two methods showed that the quality control effect of EOF analysis reconstruction method was better than Gaussian filtering method for the instantaneous disturbance of spatial scale. While for the time scale instantaneous disturbance, the quality control effect of Gaussian filtering method was better than EOF method.