DOI: 10.1002/2016MS000727
Scopus记录号: 2-s2.0-84996538372
论文题名: Exploring the impacts of physics and resolution on aqua-planet simulations from a nonhydrostatic global variable-resolution modeling framework
作者: Zhao C ; , Leung L ; R ; , Park S ; -H ; , Hagos S ; , Lu J ; , Sakaguchi K ; , Yoon J ; , Harrop B ; E ; , Skamarock W ; , Duda M ; G
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 4 起始页码: 1751
结束页码: 1768
语种: 英语
英文关键词: Mesh generation
; CAM4
; CAM5
; Community atmosphere model
; High resolution simulations
; Intertropical convergence zone
; Large-scale circulation
; MPAS
; Non-hydrostatic
; Precipitation (meteorology)
; Aqua (satellite)
; atmospheric modeling
; cloud cover
; intertropical convergence zone
; numerical model
; physics
; precipitation (climatology)
; sensitivity analysis
; wave action
; westerly
英文摘要: The nonhydrostatic Model for Prediction Across Scales (NH-MPAS) provides a global framework to achieve high resolution using regional mesh refinement. Previous studies using the hydrostatic version of MPAS (H-MPAS) with the physics parameterizations of Community Atmosphere Model version 4 (CAM4) found notable resolution-dependent behaviors. This study revisits the resolution sensitivity using NH-MPAS with both CAM4 and CAM5 physics. A series of aqua-planet simulations at global quasiuniform resolutions and global variable resolution with a regional mesh refinement over the tropics are analyzed, with a primary focus on the distinct characteristics of NH-MPAS in simulating precipitation, clouds, and large-scale circulation features compared to H-MPAS-CAM4. The resolution sensitivity of total precipitation and column integrated moisture in NH-MPAS is smaller than that in H-MPAS-CAM4. This contributes importantly to the reduced resolution sensitivity of large-scale circulation features such as the intertropical convergence zone and Hadley circulation in NH-MPAS compared to H-MPAS. In addition, NH-MPAS shows almost no resolution sensitivity in the simulated westerly jet, in contrast to the obvious poleward shift in H-MPAS with increasing resolution, which is partly explained by differences in the hyperdiffusion coefficients used in the two models that influence wave activity. With the reduced resolution sensitivity, simulations in the refined region of the NH-MPAS global variable resolution configuration exhibit zonally symmetric features that are more comparable to the quasiuniform high-resolution simulations than those from H-MPAS that displays zonal asymmetry in simulations inside the refined region. Overall, NH-MPAS with CAM5 physics shows less resolution sensitivity compared to CAM4. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75850
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; National Center for Atmospheric Research, Boulder, CO, United States; School of Earth Sciences and Environmental Engineering, Gwanju Institute of Science and Technology, Gwangju, South Korea
Recommended Citation:
Zhao C,, Leung L,R,et al. Exploring the impacts of physics and resolution on aqua-planet simulations from a nonhydrostatic global variable-resolution modeling framework[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(4)