欧拉方程中三个参数选取与雷达测定区域降水量的精度

Selecting of Three Parameters in Eular Equation and Accuracy of Area Precipitation Measurement by Weather Radar

通过数值模拟资料和实测资料探讨欧拉方程三个参数选取原则和物理意义，研究表明参数的选取和雷达测定区域降水量存在一定的关系。这一结果为使用变分法测定区域降水量精度的提高。

According to simulation data and observed data,both physcial implication and selecting principles of three parameters in Eular equation are discuessed.The result shows that there is a relationship between these parameters and precision.It provides a reference for improving accuracy of area precipitation measurement from weather radar through variational method.