气候变化领域集成服务门户(CCPortal): The Tropical Atmospheric Conveyor Belt: A Coupled Eulerian-Lagrangian Analysis of the Large-Scale Tropical Circulation

CCPortal

DOI	10.1029/2019GL086437
	The Tropical Atmospheric Conveyor Belt: A Coupled Eulerian-Lagrangian Analysis of the Large-Scale Tropical Circulation
	Raiter D.; Galanti E.; Kaspi Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:10
英文摘要	The Hadley circulation is a key element of the climate system. It is traditionally defined as the zonally averaged meridional circulation in the tropics, therefore treated as a zonally symmetric phenomenon. However, differences in temperature between land and sea cause zonal asymmetries on Earth, dramatically affecting the circulation. This longitudinal dependence of the meridional circulation evokes questions about where and when the actual large-scale tropical circulation occurs. Here, we look into the connection between the longitudinally dependent meridional circulation, and the actual large-scale transport of air in the tropics using a coupled Eulerian and Lagrangian approach. Decomposing the velocity field into rotational and divergent components, we identify how each component affects the actual circulation. We propose an alternative definition for the circulation, which describes the actual path of air parcels in the tropics, as a tropical atmospheric conveyor belt. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Belt conveyors; Lagrange multipliers; Velocity; Climate system; Coupled eulerian-lagrangian analysis; Hadley circulation; La-grangian approaches; Large-scale transport; Meridional circulation; Velocity field; Zonal asymmetry; Tropics; air-sea interaction; atmospheric circulation; climate change; Hadley cell; land-sea interaction; meridional circulation; tropical environment
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/170327
作者单位	Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel
推荐引用方式 GB/T 7714	Raiter D.,Galanti E.,Kaspi Y.. The Tropical Atmospheric Conveyor Belt: A Coupled Eulerian-Lagrangian Analysis of the Large-Scale Tropical Circulation[J],2020,47(10).
APA	Raiter D.,Galanti E.,&Kaspi Y..(2020).The Tropical Atmospheric Conveyor Belt: A Coupled Eulerian-Lagrangian Analysis of the Large-Scale Tropical Circulation.Geophysical Research Letters,47(10).
MLA	Raiter D.,et al."The Tropical Atmospheric Conveyor Belt: A Coupled Eulerian-Lagrangian Analysis of the Large-Scale Tropical Circulation".Geophysical Research Letters 47.10(2020).