Timing and structure of the Younger Dryas event and its underlying climate dynamics

doi:10.1073/pnas.2007869117

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Timing and structure of the Younger Dryas event and its underlying climate dynamics
	Cheng, Hai 7,8,9; Zhang, Haiwei 9; Spoetl, Christoph 6; Baker, Jonathan 9; Sinha, Ashish 5; Li, Hanying 9; Bartolome, Miguel 11; Moreno, Ana 1; Kathayat, Gayatri 9; Zhao, Jingyao 9
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2020-09-22
卷号	117 期号:38 页码:23408-23417
关键词	Younger Dryas timing structure event phasing climate dynamics
ISSN号	0027-8424
DOI	10.1073/pnas.2007869117
通讯作者	Cheng, Hai(cheng021@xjtu.edu.cn)
英文摘要	The Younger Dryas (YD), arguably the most widely studied millennial-scale extreme climate event, was characterized by diverse hydroclimate shifts globally and severe cooling at high northern latitudes that abruptly punctuated the warming trend from the last glacial to the present interglacial. To date, a precise understanding of its trigger, propagation, and termination remains elusive. Here, we present speleothem oxygen-isotope data that, in concert with other proxy records, allow us to quantify the timing of the YD onset and termination at an unprecedented subcentennial temporal precision across the North Atlantic, Asian Monsoon-Westerlies, and South American Monsoon regions. Our analysis suggests that the onsets of YD in the North Atlantic (12,870 +/- 30 B.P.) and the Asian Monsoon-Westerlies region are essentially synchronous within a few decades and lead the onset in Antarctica, implying a north-to-south climate signal propagation via both atmospheric (decadal-time scale) and oceanic (centennial-time scale) processes, similar to the Dansgaard-Oeschger events during the last glacial period. In contrast, the YD termination may have started first in Antarctica at similar to 11,900 B.P., or perhaps even earlier in the western tropical Pacific, followed by the North Atlantic between similar to 11,700 +/- 40 and 11,610 +/- 40 B.P. These observations suggest that the initial YD termination might have originated in the Southern Hemisphere and/or the tropical Pacific, indicating a Southern Hemisphere/tropics to North Atlantic-Asian Monsoon-Westerlies directionality of climatic recovery.
资助项目	National Nature Science Foundation of China (NSFC)[41888101] ; National Nature Science Foundation of China (NSFC)[41731174] ; US NSF[1702816]
WOS关键词	CORE WD2014 CHRONOLOGY ; LAST GLACIAL PERIOD ; HIGH-RESOLUTION ; MONSOON RECORD ; ASIAN MONSOON ; SPELEOTHEM RECORD ; TROPICAL PACIFIC ; HULU CAVE ; OCEAN ; AGE
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATL ACAD SCIENCES
WOS记录号	WOS:000575888700007
资助机构	National Nature Science Foundation of China (NSFC) ; US NSF
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/15397]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Cheng, Hai
作者单位	1.CSIC, Inst Pirena Ecol, Zaragoza 50059, Spain 2.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA 3.Univ Minnesota, Dept Earth & Environm Sci, Minneapolis, MN 55455 USA 4.Nanjing Normal Univ, Sch Geog, Nanjing 210023, Peoples R China 5.Calif State Univ Dominguez Hills, Dept Earth Sci, Carson, CA 90747 USA 6.Univ Innsbruck, Inst Geol, A-6020 Innsbruck, Austria 7.Chinese Acad Geol Sci, Inst Karst Geol, Key Lab Karst Dynam, Minist Land & Resources, Guilin 541004, Peoples R China 8.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 9.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710054, Peoples R China 10.Univ Sao Paulo, Inst Geociencias, BR-05508090 Sao Paulo, Brazil
推荐引用方式 GB/T 7714	Cheng, Hai,Zhang, Haiwei,Spoetl, Christoph,et al. Timing and structure of the Younger Dryas event and its underlying climate dynamics[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(38):23408-23417.
APA	Cheng, Hai.,Zhang, Haiwei.,Spoetl, Christoph.,Baker, Jonathan.,Sinha, Ashish.,...&Edwards, R. Lawrence.(2020).Timing and structure of the Younger Dryas event and its underlying climate dynamics.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(38),23408-23417.
MLA	Cheng, Hai,et al."Timing and structure of the Younger Dryas event and its underlying climate dynamics".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.38(2020):23408-23417.