Recent wind-driven change in Subantarctic Mode Water and its impact on ocean heat storage

doi:10.1038/s41558-017-0022-8

	Recent wind-driven change in Subantarctic Mode Water and its impact on ocean heat storage
	Gao, Libao 1,2,3; Rintoul, Stephen R.4,5,6; Yu, Weidong 1,2,7
刊名	NATURE CLIMATE CHANGE
	2018-01
卷号	8 期号:1 页码:58-+
ISSN号	1758-678X
DOI	10.1038/s41558-017-0022-8
英文摘要	The subduction and export of Subantarctic Mode Water (SAMW) supplies the upper limb of the overturning circulation and makes an important contribution to global heat, freshwater, carbon and nutrient budgets(1-5). Upper ocean heat content has increased since 2006, helping to explain the so-called global warming hiatus between 1998 and 2014, with much of the ocean warming concentrated in extratropical latitudes of the Southern Hemisphere in close association with SAMW and Antarctic Intermediate Water (AAIW)(6,7). Here we use Argo observations to assess changes in the thickness, depth and heat content of the SAMW layer. Between 2005 and 2015, SAMW has thickened (3.6 +/- 0.3 m yr(-1)), deepened (2.4 +/- 0.2 m yr(-1)) and warmed (3.9 +/- 0.3 W m(-2)). Wind forcing, rather than buoyancy forcing, is largely responsible for the observed trends in SAMW. Most (84%) of the increase in SAMW heat content is the result of changes in thickness; warming by buoyancy forcing (increased heat flux to the ocean) accounts for the remaining 16%. Projected increases in wind stress curl would drive further deepening of SAMW and increase in heat storage in the Southern Hemisphere oceans.
资助项目	AoShan Talents Cultivation Program - Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS01]
WOS关键词	SOUTHERN-OCEAN ; CIRCUMPOLAR CURRENT ; CIRCULATION ; VARIABILITY ; FRONTS ; GYRE ; SEA
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000423840000021
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25916]
专题	自然资源部第一海洋研究所
通讯作者	Gao, Libao
作者单位	1.SOA, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Peoples R China 3.Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao, Peoples R China 4.CSIRO Oceans Atmosphere, Hobart, Tas, Australia 5.Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia 6.Ctr Southern Hemisphere Oceans Res, Hobart, Tas, Australia 7.SOA, Natl Marine Environm Forecasting Ctr, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Gao, Libao,Rintoul, Stephen R.,Yu, Weidong. Recent wind-driven change in Subantarctic Mode Water and its impact on ocean heat storage[J]. NATURE CLIMATE CHANGE,2018,8(1):58-+.
APA	Gao, Libao,Rintoul, Stephen R.,&Yu, Weidong.(2018).Recent wind-driven change in Subantarctic Mode Water and its impact on ocean heat storage.NATURE CLIMATE CHANGE,8(1),58-+.
MLA	Gao, Libao,et al."Recent wind-driven change in Subantarctic Mode Water and its impact on ocean heat storage".NATURE CLIMATE CHANGE 8.1(2018):58-+.