CAJ | 학술논문

介绍了一个具有较高时间积分效率的三维弹性大气数值模式。其中，控制方程为能够描述大气非静力及可压缩性的欧拉方程组，时间积分采用了高效率的“半拉格朗日、半隐式”方案。通过引用一个简化的“云物理过程”参数化方案，针对大气中深厚湿对流过程的若干问题进行了数值试验，结果表明，模式能够对该过程中的一些基本和复杂现象进行有效地模拟。试验结果还表明，动力学框架具有很好的稳定性，能够实现高效率的时间积分，它还具有较好的频散特性，保证了空间计算的精度，从而完好地描述了风暴的形态。
개소료일개구유교고시간적분효솔적삼유탄성대기수치모식。기중，공제방정위능구묘술대기비정력급가압축성적구랍방정조，시간적분채용료고효솔적“반랍격랑일、반은식”방안。통과인용일개간화적“운물리과정”삼수화방안，침대대기중심후습대류과정적약간문제진행료수치시험，결과표명，모식능구대해과정중적일사기본화복잡현상진행유효지모의。시험결과환표명，동역학광가구유흔호적은정성，능구실현고효솔적시간적분，타환구유교호적빈산특성，보증료공간계산적정도，종이완호지묘술료풍폭적형태。
An efficiently three-dimensional numerical atmospheric model with a highly simplified “cloud micro-physics” parameterization scheme used to simulate deep moist convection is presented. It is based on Eulerian equations, and solved with the “Semi-Lagrangian and Semi-Implicit” time integration scheme. The authors performed a series numerical tests on deep convective motion. The results show that the model is capable of simulating the strongly convective motion in the atmosphere. It also shows that the numerical dispersion property of the SLSI scheme is pretty good, so the spatial charcteristics of convective storm can well be preserved. All the results show that SLSI scheme is a highly efficient time integration scheme. It will play an important role in the improvement of numerical simulations of meso-to micro-scale motion in the atmosphere.