气候变化领域集成服务门户(CCPortal): Regional meridional cells governing the interannual variability of the Hadley circulation in boreal winter

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DOI	10.1007/s00382-018-4263-7
	Regional meridional cells governing the interannual variability of the Hadley circulation in boreal winter
	Sun Y.; Li L.Z.X.; Ramstein G.; Zhou T.; Tan N.; Kageyama M.; Wang S.
发表日期	2019
ISSN	0930-7575
起始页码	831
结束页码	853
卷号	52 期号:2020-01-02
英文摘要	The Hadley circulation (HC) has conventionally been considered as thermally direct with uniform zonal distribution. However, the meridional circulation in the tropics is far from uniform, including the thermally direct cells associated with the global monsoon heating and indirect cells in the absence of diabatic heating. This study aims at assessing the thermally direct and indirect cells in different regions, identifying the geographic sectors responsible for interannual variability of HC strength and boundaries, and unraveling the underlying mechanism for the interannual variability of HC edges and intensity. Results derived from ERA-Interim reanalysis and climate models show that the climatological HC in wintertime (December–January–February) obscures longitudinal diversity of regional meridional cells (RMC), including thermally direct RMCs over Eurasia and the Eastern Pacific, thermally direct southern limbs of RMCs over the Central Pacific and Western Atlantic with opposite circulation. For each of the regions, El Niño-South Oscillation and mid-latitude eddies are assessed in terms of their relative contributions to the interannual variability of HC intensity and extent. Their underneath physical mechanisms are thoroughly investigated. © 2018, The Author(s).
英文关键词	CMIP5 model; ENSO; Extent; Global monsoon; Hadley circulation; Interannual variability; Jet; Mid-latitude eddies; Reanalysis; Strength
语种	英语
scopus关键词	annual variation; CMIP; eddy; El Nino-Southern Oscillation; Hadley cell; heating; jet; monsoon; regional climate; winter; Eurasia; Pacific Ocean; Pacific Ocean (East)
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146578
作者单位	State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Laboratoire des Sciences du Climat et de l’Environnement/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; Laboratoire de Météorologie Dynamique, CNRS, Sorbonne Université, Paris, France; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
推荐引用方式 GB/T 7714	Sun Y.,Li L.Z.X.,Ramstein G.,et al. Regional meridional cells governing the interannual variability of the Hadley circulation in boreal winter[J],2019,52(2020-01-02).
APA	Sun Y..,Li L.Z.X..,Ramstein G..,Zhou T..,Tan N..,...&Wang S..(2019).Regional meridional cells governing the interannual variability of the Hadley circulation in boreal winter.Climate Dynamics,52(2020-01-02).
MLA	Sun Y.,et al."Regional meridional cells governing the interannual variability of the Hadley circulation in boreal winter".Climate Dynamics 52.2020-01-02(2019).