globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-14-00004.1
Scopus记录号: 2-s2.0-84904479646
论文题名:
Aquaplanet experiments using CAM's variable-resolution dynamical core
作者: Zarzycki C.M.; Levy M.N.; Jablonowski C.; Overfelt J.R.; Taylor M.A.; Ullrich P.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期:14
起始页码: 5481
结束页码: 5503
语种: 英语
Scopus关键词: Cams ; Climate models ; Parameterization ; Precipitation (meteorology) ; Wave propagation ; Community atmosphere model ; General circulation model ; Horizontal resolution ; Model evaluation/performance ; Multi-grid model ; Numerical analysis/modeling ; Physical parameterization ; U.S. Department of Energy ; Value engineering ; climate modeling ; computer simulation ; experimental study ; general circulation model ; numerical model ; parameterization ; performance assessment ; precipitation assessment ; weather forecasting
英文摘要: A variable-resolution option has been added within the spectral element (SE) dynamical core of the U.S. Department of Energy (DOE)-NCAR Community Atmosphere Model (CAM). CAM-SE allows for static refinement via conforming quadrilateral meshes on the cubed sphere. This paper investigates the effect of mesh refinement in a climate model by running variable-resolution (var-res) simulations on an aquaplanet. The variable-resolution grid is a 2° (∼222 km) grid with a refined patch of 0.25° (∼28 km) resolution centered at the equator. Climatology statistics from these simulations are compared to globally uniform runs of 2° and 0.25°. A significant resolution dependence exists when using the CAM version 4 (CAM4) subgrid physical parameterization package across scales. Global cloud fraction decreases and equatorial precipitation increases with finer horizontal resolution, resulting in drastically different climates between the uniform grid runs and a physics-induced grid imprinting in the var-res simulation. Using CAM version 5 (CAM5) physics significantly improves cloud scaling at different grid resolutions. Additional precipitation at the equator in the highresolution mesh results in collocated zonally anomalous divergence in both var-res simulations, although this feature is much weaker in CAM5 than CAM4. The equilibriumsolution at each grid spacing within the var-res simulations captures the majority of the resolution signal of the corresponding globally uniform grids. The var-res simulation exhibits good performance with respect to wave propagation, including equatorial regions where waves pass through grid transitions. In addition, the increased frequency of high-precipitation events in the refined 0.258 area within the var-res simulations matches that observed in the global 0.25° simulations. © 2014 American Meteorological Society.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51078
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI, United States; National Center for Atmospheric Research, Boulder, CO, United States; University of Michigan, Ann Arbor, MI, United States; Sandia National Laboratories, Albuquerque, NM, United States; University of California, Davis, Davis, CA, United States

Recommended Citation:
Zarzycki C.M.,Levy M.N.,Jablonowski C.,et al. Aquaplanet experiments using CAM's variable-resolution dynamical core[J]. Journal of Climate,2014-01-01,27(14)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zarzycki C.M.]'s Articles
[Levy M.N.]'s Articles
[Jablonowski C.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zarzycki C.M.]'s Articles
[Levy M.N.]'s Articles
[Jablonowski C.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zarzycki C.M.]‘s Articles
[Levy M.N.]‘s Articles
[Jablonowski C.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.