利用多普勒雷达速度资料检验三维中小尺度模式流场

Test of 3D Numerical Model with Velocity Products of Radar:A New Method

数值模式调试时,需要合理快速地将观测资料用于模式的流场检验,为此建立一种新方法:将模式输出的三维风场通过正演给出模拟雷达显示,使模拟风场可以有效地和多普勒雷达的速度产品进行比较。在强降水、冰雹和大风等的个例实验中,应用上述方法对双参三维冰雹云模式风场处理,模式给出的模拟雷达结果在主要对流特征上与雷达实测一致。试验表明,该方法能直观对比多普勒雷达风场资料,有效检验模式中间过程流场,在模式研究调试中起到辅助作用。

For applying the radar velocity data to test the results of numerical model, a new method is presented to save the wind vectors of 3D numerical model as the radial velocity in the base data format of radar, and to get the simulated radar velocity display as radar volume scan in different inclination with the same color tab of the operational radar. Based on this method, the velocity product of radar can be used to test the 3D wind field simulated by the model. This method can help the programmer to find directly the difference between simulations and observations during the simulation process.