气候变化领域集成服务门户(CCPortal): Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum

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DOI	10.1029/2020GL088922
	Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum
	Song Z.; Latif M.; Park W.; Zhang Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Stable oxygen isotope records from central Greenland suggest disproportionally large long-term surface air temperature (SAT) variability during the Last Glacial Maximum (LGM) relative to preindustrial times. Large perturbations in mean atmospheric circulation and its variability forced by extensive Northern Hemisphere ice sheet coverage have been suggested as cause for the enhanced Greenland SAT variability. Here, we assess the factors driving Greenland SAT variability during the LGM by means of dedicated climate model simulations and find remote forcing from the Pacific of critical importance. Atmospheric teleconnections from the Interdecadal Pacific Oscillation (IPO), a multidecadal oscillation of sea surface temperature in the Pacific Ocean, strongly intensify under LGM conditions, driving enhanced surface wind variability over Greenland, which in turn amplifies SAT variability by anomalous atmospheric heat transport. A major role of the IPO in forcing Greenland SAT variability also is supported by a number of models from the Paleoclimate Modeling Intercomparison Project Phase III. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric movements; Climate models; Glacial geology; Oceanography; Surface properties; Surface waters; Atmospheric circulation; Atmospheric teleconnections; Climate model simulations; Inter-decadal pacific oscillations; Model inter comparisons; Sea surface temperature (SST); Stable oxygen isotopes; Surface air temperatures; Atmospheric temperature; air temperature; atmospheric circulation; ice sheet; Last Glacial Maximum; Northern Hemisphere; Pacific Decadal Oscillation; sea ice; sea surface temperature; surface wind; teleconnection; Arctic; Greenland
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/169332
作者单位	GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, China; Faculty of Mathematics and Natural Sciences, Christian Albrechts University, Kiel, Germany; South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, China
推荐引用方式 GB/T 7714	Song Z.,Latif M.,Park W.,et al. Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum[J],2020,47(23).
APA	Song Z.,Latif M.,Park W.,&Zhang Y..(2020).Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum.Geophysical Research Letters,47(23).
MLA	Song Z.,et al."Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum".Geophysical Research Letters 47.23(2020).