Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-19-0041.1 |
Effects of Rotation on the Multiscale Organization of Convection in a Global 2D Cloud-Resolving Model | |
Yang, Qiu1; Majda, Andrew J.1,2,3; Brenowitz, Noah D.4 | |
2019-11-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:11页码:3669-3696 |
文章类型 | Article |
语种 | 英语 |
国家 | U Arab Emirates; USA |
英文摘要 | Atmospheric convection exhibits distinct spatiotemporal variability at different latitudes. A good understanding of the effects of rotation on the multiscale organization of convection from the mesoscale to synoptic scale to planetary scale is still lacking. Here cloud-resolving simulations with fixed surface fluxes and radiative cooling are implemented with constant rotation in a two-dimensional (2D) planetary domain to simulate multiscale organization of convection from the tropics to midlatitudes. All scenarios are divided into three rotation regimes (weak, order-one, and strong) to represent the idealized ITCZ region (0 degrees-6 degrees N), the Indian monsoon region (6 degrees-20 degrees N), and the midlatitude region (20 degrees-45 degrees N), respectively. In each rotation regime, a multiscale asymptotic model is derived systematically and used as a diagnostic framework for energy budget analysis. The results show that planetary-scale organization of convection only arises in the weak rotation regime, while synoptic-scale organization dominates (vanishes) in the order-one (strong) rotation regime. The depletion of planetary-scale organization of convection as the magnitude of rotation increases is attributed to the reduced planetary kinetic energy of zonal winds, mainly due to the decreasing acceleration effect by eddy zonal momentum transfer from mesoscale convective systems (MCSs) and the increasing deceleration effect by the Coriolis force. Similarly, the maintenance of synoptic-scale organization is related to the acceleration effect by MCSs. Such decreasing acceleration effects by MCSs on both planetary and synoptic scales are further attributed to less favorable conditions for convection provided by weaker background vertical shear of the zonal winds, resulting from the increasing magnitude of rotation. |
英文关键词 | Convection Madden-Julian oscillation Mesoscale systems Synoptic-scale processes Energy budget balance Cloud resolving models |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496464200001 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; SIMPLE MULTICLOUD PARAMETERIZATION ; COUPLED TROPICAL WAVES ; UPSCALE IMPACT ; MESOSCALE DISTURBANCES ; SELF-AGGREGATION ; EQUATORIAL WAVES ; INTRASEASONAL IMPACT ; SCALE CIRCULATION ; DIURNAL CYCLE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/226001 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.New York Univ Abu Dhabi, Ctr Prototype Climate Modeling, Abu Dhabi, U Arab Emirates; 2.NYU, Dept Math, Courant Inst Math Sci, New York, NY USA; 3.NYU, Ctr Atmosphere Ocean Sci, New York, NY USA; 4.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Yang, Qiu,Majda, Andrew J.,Brenowitz, Noah D.. Effects of Rotation on the Multiscale Organization of Convection in a Global 2D Cloud-Resolving Model[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(11):3669-3696. |
APA | Yang, Qiu,Majda, Andrew J.,&Brenowitz, Noah D..(2019).Effects of Rotation on the Multiscale Organization of Convection in a Global 2D Cloud-Resolving Model.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(11),3669-3696. |
MLA | Yang, Qiu,et al."Effects of Rotation on the Multiscale Organization of Convection in a Global 2D Cloud-Resolving Model".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.11(2019):3669-3696. |
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