气候变化领域集成服务门户(CCPortal): Meridional flow in the Sun's convection zone is a single cell in each hemisphere

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DOI	10.1126/science.aaz7119
	Meridional flow in the Sun's convection zone is a single cell in each hemisphere
	Gizon L.; Cameron R.H.; Pourabdian M.; Liang Z.-C.; Fournier D.; Birch A.C.; Hanson C.S.
发表日期	2020
ISSN	10959203
起始页码	1469
结束页码	1472
卷号	368 期号:6498
英文摘要	The Sun's magnetic field is generated by subsurface motions of the convecting plasma. The latitude at which the magnetic field emerges through the solar surface (as sunspots) drifts toward the equator over the course of the 11-year solar cycle. We use helioseismology to infer the meridional flow (in the latitudinal and radial directions) over two solar cycles covering 1996-2019. Two data sources are used, which agree during their overlap period of 2001-2011. The time-averaged meridional flow is shown to be a single cell in each hemisphere, carrying plasma toward the equator at the base of the convection zone with a speed of ~4 meters per second at 45° latitude. Our results support the flux-transport dynamo model, which explains the drift of sunspot-emergence latitudes through the meridional flow. Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.
关键词	article human tissue latitude sun thermodynamics velocity
语种	英语
来源机构	Science (New York, N.Y.)
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133395
推荐引用方式 GB/T 7714	Gizon L.,Cameron R.H.,Pourabdian M.,et al. Meridional flow in the Sun's convection zone is a single cell in each hemisphere[J]. Science (New York, N.Y.),2020,368(6498).
APA	Gizon L..,Cameron R.H..,Pourabdian M..,Liang Z.-C..,Fournier D..,...&Hanson C.S..(2020).Meridional flow in the Sun's convection zone is a single cell in each hemisphere.,368(6498).
MLA	Gizon L.,et al."Meridional flow in the Sun's convection zone is a single cell in each hemisphere".368.6498(2020).