Improvements of numerical schemes for the global cloud-resolving climate simulations in near future

近期全球云解析气候模拟数值方案的改进

• 批准号: 22740310
• 负责人: MIURA Hiroaki
• 金额: $ 2.66万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22740310/
• 关键词: 気候; 気候モデル; 気象モデル; 雲解像モデル; 数値スキーム; 気象学; 大気モデリング; 気候変動; 数値モデル

A state-of-the-art global cloud-resolving model (CRM) that computes cloud microphysical processes directly without using cumulus parameterizations is being developed in Japan by using cutting-edge supercomputers such as "K" and the Earth Simulator. It is widely thought that global CRMs will enable climate simulations of higher reliability if they can be run on much faster computers in near future. Currently, however, there remain problems in a global CRM even in the component called "dynamics", which consists of a discretized set of the equations of fluid, in terms of the stability and the accuracy. In this work, new transport schemes and a new discretization method of the gradient operator were developed in the horizontal direction and a partial cell method was tested for the vertical direction. Those schemes developed in this work will enhance a credibility of a global CRM.

日本正在利用“K”和地球模拟器等尖端超级计算机开发一种最先进的全球云解析模型（CRM），无需使用积云参数化即可直接计算云微物理过程。人们普遍认为，如果全球 CRM 能够在不久的将来在更快的计算机上运行，​​那么它们将使气候模拟具有更高的可靠性。然而，目前全局CRM即使在由一组离散的流体方程组成的“动力学”组件中，在稳定性和准确性方面仍然存在问题。在这项工作中，在水平方向上开发了新的传输方案和新的梯度算子离散化方法，并在垂直方向上测试了部分单元方法。这项工作中制定的这些计划将提高全球 CRM 的可信度。

项目成果

An Upwind-Biased Transport Scheme Using a Quadratic Reconstruction on Spherical Icosahedral Grids

• DOI: 10.1175/mwr-d-11-00355.1
• 发表时间: 2013-02
• 期刊: Monthly Weather Review
• 影响因子: 3.2
• 作者: H. Miura;W. Skamarock

Recent activities of the NICAM group and our science targets on K-computer

NICAM 小组的近期活动以及我们在 K-computer 上的科学目标

• 发表时间: 2012
• 作者: Miura;H.;and M. Satoh
• 通讯作者: and M. Satoh

A global cloud-resolving model

全球云解析模型

• 发表时间: 2012
• 作者: Miura;H.;and R. Yoshida
• 通讯作者: and R. Yoshida

Global cloud-system-resolving simulations of an eastward propagation and a spontaneous onset of the Madden-Julian oscillation

全球云系统解析向东传播和马登-朱利安振荡自发爆发的模拟

• 发表时间: 2010
• 作者: 山下達也;小高正嗣;杉山耕一朗;中島健介;石渡正樹;林祥介;三浦裕亮
• 通讯作者: 三浦裕亮

全球雲解像気候計算に向けて

迈向全球云解析气候计算

• 作者: Nozawa;S.;S. Takita;T. Hibino;T. Kawabata;A. Mizuno;N. Saito;S. Wada;T. T. Tasuda;T. Takahashi;T. Kawahara;H. Fujiwara;and Y. Ogawa;植田将弘，加藤将樹，廣田健;三浦裕亮
• 通讯作者: 三浦裕亮