中文摘要：

为考察平流差分方案对高分辨率非静力数值模式的影响,利用非线性密度流试验,对比分析了在不同分辨率情况下气候研究与预报模式中不同平流项差分方案对大气非静力运动的描述能力。结果表明：模式分辨率是影响试验结果的重要参数,提高模式的分辨率有利于提高模拟的结果;无论是水平平流项差分方案还是垂直平流项差分方案,当选取偶数（2,4,6）阶时,模拟结果在下边界都存在不同程度的小尺度扰动,与参考解偏差较大;选取奇数（3,5）阶时的效果明显优于偶数（2,4,6）阶;水平平流项差分方案取5阶,垂直平流项差分方案取3阶时都能得到最好的模拟效果。

英文摘要：

In order to investigate the differential advection methods on high-resolution non-hydrostatic numerical model simulation results,non-linear dersity flow test was used to get the optimal solution having fine-scale simulation and transient characteristics of the ability of horizontal advection and vertical advection differential scheme,based on the non-hydrostatic dynamical framework of WRF.In the case of different resolutions,studying the abilitiy to describe non-hydrostatic atmospheric motion of different advection diffrential scheme was studied.Tests shows that model resolution is an important parameter that affects the test results.Increasing the resolution of the model helps to improve the simulation results.Unstable disturbance is generated when horizontal advection orders and vertical advection orders are even,and odd orders are much better;The optimal combination is that horizontal advection orders takes 5order and vertical advection orders takes 3order.