干旱区生态环境知识资源中心(Arid): Regional Versus Remote Atmosphere-Ocean Drivers of the Rapid Projected Intensification of the East Australian Current

Arid

DOI	10.1029/2019JC015889
	Regional Versus Remote Atmosphere-Ocean Drivers of the Rapid Projected Intensification of the East Australian Current
	Bull, Christopher Y. S.; Kiss, Andrew E.; Sen Gupta, Alex; Jourdain, Nicolas C.; Argueso, Daniel; Di Luca, Alejandro; Serazin, Guillaume
通讯作者	Bull, CYS
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
EISSN	2169-9291
出版年	2020
卷号	125 期号:7
英文摘要	Like many western boundary currents, the East Australian Current (EAC) extension is projected to get stronger and warmer in the future. The CMIP5 multimodel mean (MMM) projection suggests up to 5 degrees C of warming under an RCP85 scenario by 2100. Previous studies employed Sverdrup balance to associate a trend in basin wide zonally integrated wind stress curl (resulting from the multidecadal poleward intensification in the westerly winds over the Southern Ocean) with enhanced transport in the EAC extension. Possible regional drivers are yet to be considered. Here we introduce the NEMO-OASIS-WRF coupled regional climate model as a framework to improve our understanding of CMIP5 projections. We analyze a hierarchy of simulations in which the regional atmosphere and ocean circulations are allowed to freely evolve subject to boundary conditions that represent present-day and CMIP5 RCP8.5 climate change anomalies. Evaluation of the historical simulation shows an EAC extension that is stronger than similar ocean-only models and observations. This bias is not explained by a linear response to differences in wind stress. The climate change simulations show that regional atmospheric CMIP5 MMM anomalies drive 73% of the projected 12 Sv increase in EAC extension transport whereas the remote ocean boundary conditions and regional radiative forcing (greenhouse gases within the domain) play a smaller role. The importance of regional changes in wind stress curl in driving the enhanced EAC extension is consistent with linear theory where the NEMO-OASIS-WRF response is closer to linear transport estimates compared to the CMIP5 MMM.
英文关键词	East Australia Current CMIP5 projections RCP85 western boundary currents ocean circulation ocean modeling
类型	Article
语种	英语
开放获取类型	Other Gold, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000560011100006
WOS关键词	WESTERN BOUNDARY CURRENTS ; DEPTH-INTEGRATED FLOW ; AGULHAS LEAKAGE ; CLIMATE-CHANGE ; POLEWARD SHIFT ; SOUTHERN-OCEAN ; CMIP5 MODELS ; VARIABILITY ; CIRCULATION ; WIND
WOS类目	Oceanography
WOS研究方向	Oceanography
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325642
作者单位	[Bull, Christopher Y. S.] British Antarctic Survey, Cambridge, England; [Bull, Christopher Y. S.; Kiss, Andrew E.; Sen Gupta, Alex; Di Luca, Alejandro; Serazin, Guillaume] Univ New South Wales, ARC Ctr Excellence Climate Extremes, Sydney, NSW, Australia; [Kiss, Andrew E.] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; [Sen Gupta, Alex; Di Luca, Alejandro; Serazin, Guillaume] Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia; [Jourdain, Nicolas C.] Univ Grenoble Alpes, CNRS, IRD, G INP,IGE, Grenoble, France; [Argueso, Daniel] Univ Balearic Isl, Phys Dept, Palma De Mallorca, Spain; [Bull, Christopher Y. S.] Northumbria Univ, Dept Geog & Environm Sci, Newcastle Upon Tyne, Tyne & Wear, England
推荐引用方式 GB/T 7714	Bull, Christopher Y. S.,Kiss, Andrew E.,Sen Gupta, Alex,et al. Regional Versus Remote Atmosphere-Ocean Drivers of the Rapid Projected Intensification of the East Australian Current[J]. French National Research Institute for Sustainable Development,2020,125(7).
APA	Bull, Christopher Y. S..,Kiss, Andrew E..,Sen Gupta, Alex.,Jourdain, Nicolas C..,Argueso, Daniel.,...&Serazin, Guillaume.(2020).Regional Versus Remote Atmosphere-Ocean Drivers of the Rapid Projected Intensification of the East Australian Current.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(7).
MLA	Bull, Christopher Y. S.,et al."Regional Versus Remote Atmosphere-Ocean Drivers of the Rapid Projected Intensification of the East Australian Current".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.7(2020).