气候变化领域集成服务门户(CCPortal): Abrupt cooling repeatedly punctuated early-Holocene climate in eastern North America

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DOI	10.1177/0959683611427329
	Abrupt cooling repeatedly punctuated early-Holocene climate in eastern North America
	Hou, Juzhi; Huang, Yongsong; Shuman, Bryan N.; Oswald, W. Wyatt; Foster, David R.
通讯作者	Hou, JZ (通讯作者)
发表日期	2012
ISSN	0959-6836
EISSN	1477-0911
起始页码	525
结束页码	529
卷号	22 期号:5
英文摘要	Climate proxy records and general circulation models suggest that Atlantic Meridional Overturning Circulation (AMOC) plays a key role for global climate changes. Paleoceanographic data document multiple episodes of prominent AMOC weakening during the early Holocene. However, proxy records at adjacent continents have not been demonstrated to fully capture the climate responses to multiple AMOC variation due to temporal resolution and/or the proxy sensitivity. Here we present decadal- to multidecadal-resolution hydrogen isotopic records of aquatic biomarkers from Blood Pond, Massachusetts during the early Holocene. Our data reveal a full series of prominent and abrupt cooling events centered on 10.6, 10.2, 9.5, 9.2, 8.8 and 8.4 ka. These abrupt climatic reversals coincide with key intervals of weakened AMOC, suggesting an apparent relationship between AMOC oscillations and the abrupt continental climate changes in northeastern North America. The noticeable connection implies that the AMOC variation did play an important role in the abrupt climate changes during the early Holocene. Our data also suggest that northeastern North America may experience significant climatic variations should the predicted major disturbance of AMOC occur in the coming century as a result of anthropogenic greenhouse gas emissions.
关键词	NORTHEASTERN UNITED-STATES THERMOHALINE CIRCULATION COLD EVENT LAKE RECORD PRECIPITATION RADIOCARBON VEGETATION RESPONSES DROUGHT
英文关键词	abrupt climate event; AMOC; compound-specific D/H ratios; early Holocene; northeastern North America
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000302436800002
来源期刊	HOLOCENE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258069
推荐引用方式 GB/T 7714	Hou, Juzhi,Huang, Yongsong,Shuman, Bryan N.,et al. Abrupt cooling repeatedly punctuated early-Holocene climate in eastern North America[J]. 中国科学院青藏高原研究所,2012,22(5).
APA	Hou, Juzhi,Huang, Yongsong,Shuman, Bryan N.,Oswald, W. Wyatt,&Foster, David R..(2012).Abrupt cooling repeatedly punctuated early-Holocene climate in eastern North America.HOLOCENE,22(5).
MLA	Hou, Juzhi,et al."Abrupt cooling repeatedly punctuated early-Holocene climate in eastern North America".HOLOCENE 22.5(2012).