| DOI: | 10.2172/1177789
|
| 报告号: | DOE-UCAR--06748
|
| 报告题名: | Multiscale Simulation of Moist Global Atmospheric Flows |
| 作者: | Grabowski, Wojciech W.; Smolarkiewicz, P. K.
|
| 出版年: | 2015
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| 发表日期: | 2015-04-13
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| 总页数: | 3
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 对流
; 降水
; 地形学
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| 主题词: | CONVECTION
; PRECIPITATION
; TOPOGRAPHY
|
| 英文摘要: | The overarching goal of this award was to include phase changes of the water substance and accompanying latent heating and precipitation processes into the all-scale nonhydrostatic atmospheric dynamics EUlerian/LAGrangian (EULAG) model. The model includes fluid flow solver that is based on either an unabbreviated set of the governing equations (i.e., compressible dynamics) or a simplified set of equations without sound waves (i.e., sound-proof, either anelastic or pseudo-incompressible). The latter set has been used in small-scale dynamics for decades, but its application to the all-scale dynamics (from small-scale to planetary) has never been studied in practical implementations. The highlight of the project is the development of the moist implicit compressible model that can be run by applying time steps, as long as the anelastic model is limited only by the computational stability of the fluid flow and not by the speed of sound waves that limit the stability of explicit compressible models. Applying various versions of the EULAG model within the same numerical framework allows for an unprecedented comparison of solutions obtained with various sets of the governing equations and straightforward evaluation of the impact of various physical parameterizations on the model solutions. The main outcomes of this study are reported in three papers, two published and one currently under review. These papers include comparisons between model solutions for idealized moist problems across the range of scales from small to planetary. These tests include: moist thermals rising in the stable-stratified environment (following Grabowski and Clark, J. Atmos. Sci. 1991) and in the moist-neutral environment (after Bryan and Fritsch, Mon. Wea. Rev. 2002), moist flows over a mesoscale topography (as in Grabowski and Smolarkiewicz, Mon. Wea. Rev. 2002), deep convection in a sheared environment (following Weisman and Klemp, Mon. Wea. Rev. 1982), moist extension of the baroclinic wave on the sphere of Jablonowski and Williamson (Q. J. R. Met. Soc. 2006), and moist extension of the Held-Suarez idealized climate benchmark (Held and Suarez, Bull. Amer. Met. Soc., 1994). |
| URL: | http://www.osti.gov/scitech/servlets/purl/1177789
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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/41894
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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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| File Name/ File Size |
Content Type |
Version |
Access |
License |
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| 1177789.pdf（151KB） | 研究报告 | -- | 开放获取 | | View
Download
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| Recommended Citation: | |
Grabowski, Wojciech W.,Smolarkiewicz, P. K.. Multiscale Simulation of Moist Global Atmospheric Flows. 2015-01-01.
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