Enhanced North Pacific deep-ocean stratification by stronger intermediate water formation during Heinrich Stadial 1

doi:10.1038/s41467-019-08606-2

	Enhanced North Pacific deep-ocean stratification by stronger intermediate water formation during Heinrich Stadial 1
	Gong, X.1; Lembke-Jene, L.1; Lohmann, G.1,2; Knorr, G.1; Tiedemann, R.1; Zou, J. J.3,4; Shi, X. F.3,4
刊名	NATURE COMMUNICATIONS
	2019-02-08
卷号	10
ISSN号	2041-1723
DOI	10.1038/s41467-019-08606-2
英文摘要	The deglacial history of CO2 release from the deep North Pacific remains unresolved. This is due to conflicting indications about subarctic Pacific ventilation changes based on various marine proxies, especially for Heinrich Stadial 1 (HS-1) when a rapid atmospheric CO2 rise occurs. Here, we use a complex Earth System Model to investigate the deglacial North Pacific overturning and its control on ocean stratification. Our results show an enhanced intermediate-to-deep ocean stratification coeval with intensified North Pacific Intermediate Water (NPIW) formation during HS-1, compared to the Last Glacial Maximum. The stronger NPIW formation causes lower salinities and higher temperatures at intermediate depths. By lowering NPIW densities, this enlarges vertical density gradient and thus enhances intermediate-to-deep ocean stratification during HS-1. Physically, this process prevents the North Pacific deep waters from a better communication with the upper oceans, thus prolongs the existing isolation of glacial Pacific abyssal carbons during HS-1.
资助项目	MSEG[MGQNLM201703]
WOS关键词	SEA-SURFACE TEMPERATURE ; OKHOTSK SEA ; OVERTURNING CIRCULATION ; LATE PLEISTOCENE ; GLACIAL PACIFIC ; GLOBAL CLIMATE ; ATLANTIC ; VENTILATION ; EVENTS ; TELECONNECTIONS
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000458175300005
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25528]
专题	自然资源部第一海洋研究所
通讯作者	Gong, X.
作者单位	1.Helmholtz Zentrum Polar & Meeresforsch, Alfred Wegener Inst, Bussestr 24, D-27570 Bremerhaven, Germany 2.Univ Bremen, MARUM Ctr Marine Environm Sci, Leobener Str, D-28359 Bremen, Germany 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 4.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Gong, X.,Lembke-Jene, L.,Lohmann, G.,et al. Enhanced North Pacific deep-ocean stratification by stronger intermediate water formation during Heinrich Stadial 1[J]. NATURE COMMUNICATIONS,2019,10.
APA	Gong, X..,Lembke-Jene, L..,Lohmann, G..,Knorr, G..,Tiedemann, R..,...&Shi, X. F..(2019).Enhanced North Pacific deep-ocean stratification by stronger intermediate water formation during Heinrich Stadial 1.NATURE COMMUNICATIONS,10.
MLA	Gong, X.,et al."Enhanced North Pacific deep-ocean stratification by stronger intermediate water formation during Heinrich Stadial 1".NATURE COMMUNICATIONS 10(2019).