三维球坐标系下重力波波包非线性传播过程的数值研究

A NUMERICAL STUDY OF NONLINEAR PROPAGATION OF A GRAVITY-WAVE MCKET IN 3-DIMENSIONAL GLOBAL COORDINATION

采用全隐欧拉（ＦＩＣＥ）格式，对三维球坐标系下重力波波包在中层大气的非线性传播过程进行了数值模拟．模拟结果完整地反映了重力波波包在中层大气的非线性传播过程，并与线性重力波理论进行了定量比较．

By using full- implicit- continuous- Eulerian (FICE ) scheme , and taking the atmospheric basic motion equations in 3-dimensional global coordination as the gov- erning equations, a numerical simulation of nonlinear propagation of a gravity-wave packet in mesosphere is presented. The numerical results perfectly show the nonlinear propagation of a gravity-wave packet in mesosphere. A comparison of the numerical results with the linear gravity-wave theories is also presented.