| DOI: | 10.2172/1054064
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| 报告号: | DOEER64446
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| 报告题名: | Subgrid-Scale Mixing in Climate Models: A Novel Look at Diffusion, Accuracy, Stability and Climate Sensitivity |
| 作者: | Rood, Richard B; Jablonowski, Christiane
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| 出版年: | 2012
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| 发表日期: | 2012-10-31
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Climate Model
; Weather Model
; Numerical Methods
; Transport
; Sub-scale Mixing
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| 英文摘要: | This project focuses on evaluating the role of subgrid-scale dissipation in the dynamical core of atmospheric models. All dynamical cores of atmospheric general circulation models (GCMs) employ some form of subgrid-scale dissipation, either explicitly specified or inherent in the chosen numerical schemes. The dissipation processes are needed to keep the simulation stable or to satisfy important physical properties, and the hope is that they capture and mimic in some poorly understood way the true processes at the unresolved subgrid scale. There is no physical basis that such dissipation can accomplish this. We originally posed a set of numerical test cases chosen or designed to isolate the role of the filters and fixers on both the dynamical variables (pressure, temperature, velocity, vorticity) and trace constituents. From these test case results, we synthesize the information to determine the impact of the subgrid-scale assumptions on weather and climate models. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1054064
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40483
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1054064.doc（142KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Rood, Richard B,Jablonowski, Christiane. Subgrid-Scale Mixing in Climate Models: A Novel Look at Diffusion, Accuracy, Stability and Climate Sensitivity. 2012-01-01.
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