基于Surfer的天气雷达基本反射率产品的绘制

Drawing of Weather Radar Basic Reflectivity Products Based on Surfer

利用Surfer专业的插值、地理信息和绘图功能,可生成具有细腻图像和高精度位置的新一代天气雷达基本反射率产品。使用2019年7月13日02时32分衡阳天气雷达基数据,采用克里金插值方法生成天气雷达基本反射率产品数据,通过水平面投影算法和直角坐标到经纬度坐标转换,生成高精度、可导出的天气雷达基本反射率产品格点数据。结果表明:当Surfer格点数据使用2000×1760网格,采用克里金插值的方法,Surfer绘制的基本反射率回波图效果最好。应用插值算法导出的XYZ三维格点化数据,可为天气雷达探测业务和研究人员,研究不同天气雷达一致性比较和进行设备标定,提供良好的基础。

Using Surfer's interpolation,geographic information and mapping functions,the basic reflectivity products of the next generation weather ra dar with fine images and high precision positions can be generated.Based on the data of Hengyang weather radar at 02:32 UTC on July 13,2019,the basic reflectance product data of weather radar are generated by Kriging interpolation method.The high precision and derivable lattice data of basic reflectivity product of weather radar are generated by horizontal projection algorithm and transformation from rectangu lar coordinates to latitude and longitude coordinates.The results show that when Surfer lattice data use 2000*1760 grid and Kriging interpo lation method,Surfer's basic reflectivity echo map is the best.The XYZ three-dimensional lattice data derived from interpolation algorithm provides a good basis for weather radar detection business and researchers to study the consistency comparison of different weather radar and equipment calibration.