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利用数值模拟的方法研究了大气重力内波传播的扰动对中间层上部和低热层大气化学成分分布的影响.着重探讨非线性、可压缩的二维光化-动力耦合重力波模式的建立、计算方法以及模式正确性分析.该模式考虑了光化学反应产生的非绝热效应以及重力波对大气化学反应和对化学成分输运的影响.模式在水平方向利用拟谱方法,对垂直方向和时间采用有限差分方法,并利用FICE方法对模式求解.对小振幅波动的模拟结果与线性重力波理论结果符合得很好,证明了该模式算法的正确性,它表明拟谱法和有限差分法相结合是大气重力波模拟研究的有效的、并且计算量较小的方法之一.
The effect of atmospheric gravity wave propagation disturbance on the atmospheric chemical composition distribution in the upper and lower layers of the middle layer was studied by means of numerical simulation.The establishment of a nonlinear and compressible two-dimensional coupled dynamical coupled gravity wave model Method and mode correctness analysis.The model considers the non-adiabatic effect of photochemical reaction and the influence of gravity wave on atmospheric chemical reaction and transport of chemical components.Model uses the method of quasi-spectral in the horizontal direction, limited the vertical direction and time The difference method and the FICE method are used to solve the model.The simulation results of the small amplitude fluctuation are in good agreement with the linear gravimetric theory and the correctness of this model algorithm is proved.It shows that the combination of the pseudo-spectral method and the finite difference method is the atmosphere One of the effective and less computationally intensive methods for gravity wave simulation research.