气候变化领域集成服务门户(CCPortal): Eddy Influences on the Hadley Circulation

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DOI	10.1029/2018MS001554
	Eddy Influences on the Hadley Circulation
	Davis N.A.; Birner T.
发表日期	2019
ISSN	19422466
起始页码	1563
结束页码	1581
卷号	11 期号:6
英文摘要	Variations in the width and strength of the Hadley cells are associated with many radiative, thermodynamic, and dynamical forcings. The physical mechanisms driving these responses remain unclear, in part because of the interactive nature of eddy-mean flow adjustment. Here, a modeling framework is developed which separates the mean flow and time-mean eddy flow in a gray radiation general circulation model with simple representations of ocean heat transport and ozone. In the absence of eddies, with moist convection and weak numerical damping, the Hadley cell is confined to the upper troposphere and has a vanishingly small poleward momentum flux. Eddies allow the cell to extend down to the surface, double its heat transport, and flux momentum poleward, the latter two being basic consequences of a deepening of the circulation. Because of convection and damping—which mimics, in part, the effect of eddy stresses—previous work may have underestimated the impact of eddies on earth's circulation. Quasigeostrophic eddy fluxes are sufficient to produce Hadley and Ferrel cells, but with a substantially greater Hadley cell strength than when all eddy impacts are considered, including eddy fluxes of moisture, mass, and momentum and eddy impacts on surface fluxes and clouds. ©2019. The Authors.
英文关键词	axisymmetric; Hadley cell; idealized modeling
语种	英语
scopus关键词	Clouds; Cytology; Damping; Heat transfer; Momentum; Axisymmetric; General circulation model; Hadley cells; Hadley circulation; Idealized models; Ocean heat transport; Physical mechanism; Quasi-geostrophic; Cells; air-sea interaction; atmospheric circulation; eddy; general circulation model; Hadley cell; momentum transfer; quasi-geostrophic flow; radiative forcing; thermodynamics; troposphere
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156900
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Now at Atmospheric Chemistry Observations and Modeling Division, National Center for Atmospheric Research, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States; Now at Meteorological Institute Munich, Ludwig Maximilians University, Munich, Germany
推荐引用方式 GB/T 7714	Davis N.A.,Birner T.. Eddy Influences on the Hadley Circulation[J],2019,11(6).
APA	Davis N.A.,&Birner T..(2019).Eddy Influences on the Hadley Circulation.Journal of Advances in Modeling Earth Systems,11(6).
MLA	Davis N.A.,et al."Eddy Influences on the Hadley Circulation".Journal of Advances in Modeling Earth Systems 11.6(2019).