Performance of Long-Term Integrations of the Japan Meteorological Agency Nonhydrostatic Model Using the Spectral Boundary Coupling Method
Performance of Long-Term Integrations of the Japan Meteorological Agency Nonhydrostatic Model Using the Spectral Boundary Coupling Method
复制标题
使用谱边界耦合方法的日本气象厅非静水力模型的长期积分性能
DOI：
10.1175/waf894.1
复制
发表时间：
2005
影响因子：
2.9
通讯作者：
Y. Sato
中科院分区：
文献类型：
--
作者：
K. Yasunaga;H. Sasaki;Y. Wakazuki;T. Kato;Chiashi Muroi;A. Hashimoto;S. Kanada;K. Kurihara;M. Yoshizaki;Y. Sato
将有限区域模式与大尺度模式耦合的谱边界耦合(SBC)方法引入非静力模式。为了研究SBC方法是否适用于高分辨率非静力模式的长期积分，对一个水平网格间隔为5公里的模式进行了两次数值试验。在一个实验中，使用了SBC方法，而在另一个实验中没有使用该方法。这两个实验的时间积分都超过了40天。非静力模式被嵌套到客观分析的场中，而不是来自扩展区域模式的预报。预测的海平面气压和降水模式分别与客观分析和全球降水气候学项目(GPCP)提供的数据进行了比较。利用日本气象厅(JMA)观测到的分析降雨量和地面数据，对预测的日本岛屿降雨量和地表温度进行了统计评估。在本研究中检验的所有结果显示，使用SBC方法比不使用SBC方法的性能更好。结果表明，SBC方法在高分辨率非静力模式的长期模拟中具有很高的实用价值。
The spectral boundary coupling (SBC) method, which is an approach used to couple a limited-area model with a large-scale model, was introduced into a nonhydrostatic model. To investigate whether the SBC method works well in a long-term integration of a high-resolution nonhydrostatic model, two numerical experiments were conducted with a model having a horizontal grid interval of 5 km. In one experiment, the SBC method was employed, while it was not in the other experiment. The time integration in both experiments was over a 40-day period. The nonhydrostatic model was nested into objectively analyzed fields, instead of the forecasts from an extended-area model. Predicted patterns of sea level pressure and precipitation were compared with objective analyses, and data provided by the Global Precipitation Climatology Project (GPCP), respectively. The predicted rainfall amounts and surface temperature over the Japanese islands were statistically evaluated, making use of the analyzed rainfall and surface data observed by the Japan Meteorological Agency (JMA). All results examined in the present study exhibited better performances with use of the SBC method than those without the SBC method. It was found that the SBC method was highly useful in long-term simulations by a high-resolution nonhydrostatic model.
利用 BAIM 验证区域气候模型的气候特征。
DOI：
--
发表时间：
2002
期刊：
J.Meteor.Soc.Japan 80
影响因子：
--
作者：
Mabuchi;K.;et al.
通讯作者：
et al.