DOI: 10.1002/2017MS001078
Scopus记录号: 2-s2.0-85042412186
论文题名: An Idealized Test of the Response of the Community Atmosphere Model to Near-Grid-Scale Forcing Across Hydrostatic Resolutions
作者: Herrington A ; R ; , Reed K ; A
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2018
卷: 10, 期: 2 起始页码: 560
结束页码: 575
语种: 英语
英文关键词: Cams
; Velocity
; Cloud parameterizations
; Community atmosphere model
; GCMs
; High resolution
; Horizontal resolution
; Rising bubbles
; Vertical motions
; Vertical velocity
; Equations of motion
英文摘要: A set of idealized experiments are developed using the Community Atmosphere Model (CAM) to understand the vertical velocity response to reductions in forcing scale that is known to occur when the horizontal resolution of the model is increased. The test consists of a set of rising bubble experiments, in which the horizontal radius of the bubble and the model grid spacing are simultaneously reduced. The test is performed with moisture, through incorporating moist physics routines of varying complexity, although convection schemes are not considered. Results confirm that the vertical velocity in CAM is to first-order, proportional to the inverse of the horizontal forcing scale, which is consistent with a scale analysis of the dry equations of motion. In contrast, experiments in which the coupling time step between the moist physics routines and the dynamical core (i.e., the “physics” time step) are relaxed back to more conventional values results in severely damped vertical motion at high resolution, degrading the scaling. A set of aqua-planet simulations using different physics time steps are found to be consistent with the results of the idealized experiments. © 2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75645
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: School of Marine and Atmospheric Sciences, State University of New York at Stony Brook, Stony Brook, NY, United States
Recommended Citation:
Herrington A,R,, Reed K,et al. An Idealized Test of the Response of the Community Atmosphere Model to Near-Grid-Scale Forcing Across Hydrostatic Resolutions[J]. Journal of Advances in Modeling Earth Systems,2018-01-01,10(2)