气候变化领域集成服务门户(CCPortal): An investigation of the ocean’s role in Atlantic multidecadal variability

CCPortal

DOI	10.1175/JCLI-D-19-0236.1
	An investigation of the ocean’s role in Atlantic multidecadal variability
	Li L.; Lozier M.S.; Buckley M.W.
发表日期	2020
ISSN	0894-8755
起始页码	3019
结束页码	3035
卷号	33 期号:8
英文摘要	A mechanistic understanding of the Atlantic multidecadal variability (AMV) is highly desirable since it will considerably aid regional and global climate predictions. Although ocean dynamics have long been invoked to explain the AMV, recent studies have cast doubt on its influence. Here we evaluate the necessity of ocean dynamics for the AMV using an observationally based idealized model that isolates the contribution of atmospheric forcing to the AMV. By demonstrating that this model underestimates the magnitude of the observed sea surface temperature variability in the extratropical North Atlantic, we infer that ocean dynamics contribute significantly to the AMV in this region. This inference holds when we add anthropogenic aerosol forcing and the effects of mixed layer depth variability to the idealized model. Thus, our study suggests that ocean heat transport convergence is needed to explain sea surface temperature variability in the extratropical North Atlantic. Sustained ocean observing systems in the this region will help untangle the physical mechanisms involved. © 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Atmospheric temperature; Dynamics; Submarine geophysics; Surface properties; Surface waters; Anthropogenic aerosols; Atmospheric forcing; Mixed layer depths; Multidecadal variability; Ocean heat transport; Ocean observing systems; Physical mechanism; Sea surface temperature variability; Oceanography; air-sea interaction; Atlantic Multidecadal Oscillation; atmospheric forcing; climate prediction; decadal variation; regional climate; sea surface temperature; Atlantic Ocean; Atlantic Ocean (North)
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171360
作者单位	Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC, United States; George Mason University, Fairfax, VA, United States; Department of Meteorology and Atmospheric Science, Pennsylvania State University, University Park, PA, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
推荐引用方式 GB/T 7714	Li L.,Lozier M.S.,Buckley M.W.. An investigation of the ocean’s role in Atlantic multidecadal variability[J],2020,33(8).
APA	Li L.,Lozier M.S.,&Buckley M.W..(2020).An investigation of the ocean’s role in Atlantic multidecadal variability.Journal of Climate,33(8).
MLA	Li L.,et al."An investigation of the ocean’s role in Atlantic multidecadal variability".Journal of Climate 33.8(2020).