Conservative CIP Transport in Meteorological Models
Conservative CIP Transport in Meteorological Models
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DOI：
10.1299/jsmeb.47.725
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
Xindong Peng;F. Xiao;Keiko Takahashi;T. Yabe
中科院分区：
文献类型：
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作者：
Xindong Peng;F. Xiao;Keiko Takahashi;T. Yabe
为了提高模型的代表性，我们已经实现了CIP-CSL在气象模式。利用CIP-CLR方法，在地球模拟器上进行了只考虑水汽和液态水输送的大气环流模式的实际模拟和理想化检验。数值试验表明，CIP-CSL方案在纯平流试验和长期气候模拟中均显著改善了模式的输出。CIP-CSLR方案较原谱方法有较大改进，能较好地反映热带地区的合理降水量。在一个新的网格（阴阳）系统上使用CIP-CLR，我们也取得了保守和更准确的结果被动示踪剂平流与相对较少的网格点相比，经纬度网格。在没有极奇异性的情况下，CIP-CSLR的分裂过程在球几何中实现了有希望的输运，即使指定了大的Courant数。
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 Courant number is specified.