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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Conservative CIP transport in meteorological models
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Conservative CIP transport in meteorological models

机译:气象模型中的CIP保守运输

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摘要

In order to improve the model representation, we have implemented the CIP-CSLR in meteorological models. Real-case simulations and idealized tests were carried out on the Earth Simulator with atmospheric general circulation models that only the watervapor and liquid water were transported with the CIP-CSLR method. Numerical experiments show that the CIP-CSLR scheme substantially improved the model outputs for both pure advection tests and the long-term climate simulations. Reasonable tropical precipitation is shown with the CIP-CSLR scheme, which is largely improved in comparison with the original spectral method. Using the CIP-CSLR on a new grid (Yin-Yang) system, we also achieved conservative and more accurate results of passive tracer advection with relatively fewer grid points compared with the latitude-longitude grid. Without polar singularity, the splitting procedure of CIP-CSLR achieves promising transport in spherical geometry even if large Cpurant number is specified.
机译:为了改善模型表示,我们在气象模型中实现了CIP-CSLR。在带有大气通用循环模型的Earth Simulator上进行了实际案例模拟和理想化测试,结果表明仅使用CIP-CSLR方法传输了水汽和液态水。数值实验表明,CIP-CSLR方案大大改善了纯平流试验和长期气候模拟的模型输出。 CIP-CSLR方案显示了合理的热带降水,与原始的光谱方法相比,它得到了很大的改善。在新的栅格(阴阳)系统上使用CIP-CSLR,与纬度-经度栅格相比,我们还以相对较少的栅格点获得了被动示踪剂对流的保守且更准确的结果。没有极性奇异点,即使指定了大的Cpurant数,CIP-CSLR的拆分过程也可以在球形几何体中实现有希望的传输。

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