气候变化领域集成服务门户(CCPortal): Dependence of Atmospheric Transport Into the Arctic on the Meridional Extent of the Hadley Cell

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DOI	10.1029/2020GL090133
	Dependence of Atmospheric Transport Into the Arctic on the Meridional Extent of the Hadley Cell
	Yang H.; Waugh D.W.; Orbe C.; Chen G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Recent studies have shown a large spread in the transport of atmospheric tracers into the Arctic among a suite of chemistry climate models and have suggested that this is related to the spread in the meridional extent of the Hadley Cell (HC). Here we examine the HC-transport relationship using an idealized model, where we vary the mean circulation and isolate its impact on transport to the Arctic. It is shown that the poleward transport depends on the relative position between the northern edge of the HC and the tracer source, with maximum transport occurring when the HC edge lies near the middle of the source region. Such dependence highlights the critical role of near-surface transport by the Eulerian mean circulation rather than eddy mixing in the free troposphere and suggests that variations in the HC edge and the tracer source region are both important for modeling Arctic composition. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric chemistry; Climate models; Clouds; Tracers; Transport properties; Atmospheric tracer; Atmospheric transport; Chemistry-climate models; Free troposphere; Idealized models; Maximum transport; Near surfaces; Relative positions; Atmospheric movements; atmospheric circulation; atmospheric transport; climate modeling; eddy covariance; Euler flow; Hadley cell; meridional circulation; troposphere; Arctic
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169599
作者单位	Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angles, CA, United States; School of Mathematics, University of New South Wales Sydney, Sydney, NSW, Australia; NASA Goddard Institute for Space Studies, New York, NY, United States
推荐引用方式 GB/T 7714	Yang H.,Waugh D.W.,Orbe C.,et al. Dependence of Atmospheric Transport Into the Arctic on the Meridional Extent of the Hadley Cell[J],2020,47(20).
APA	Yang H.,Waugh D.W.,Orbe C.,&Chen G..(2020).Dependence of Atmospheric Transport Into the Arctic on the Meridional Extent of the Hadley Cell.Geophysical Research Letters,47(20).
MLA	Yang H.,et al."Dependence of Atmospheric Transport Into the Arctic on the Meridional Extent of the Hadley Cell".Geophysical Research Letters 47.20(2020).