North Atlantic subtropical mode water formation controlled by Gulf Stream fronts

doi:10.1093/nsr/nwad133

IOCAS-IR > 海洋环流与波动重点实验室

	North Atlantic subtropical mode water formation controlled by Gulf Stream fronts
	Gan, Bolan 1,2; Yu, Jingjie 1; Wu, Lixin 1,2; Danabasoglu, Gokhan 3; Small, R. Justin 3; Baker, Allison H.3; Jia, Fan 2,4; Jing, Zhao 1,2; Ma, Xiaohui 1,2; Yang, Haiyuan 1,2; Chen, Zhaohui 1,2
	2023-05-08
发表期刊	NATIONAL SCIENCE REVIEW
ISSN	2095-5138
页码	10
通讯作者	Gan, Bolan([email protected])
摘要	Frontal-scale ocean-to-atmosphere feedback determines the formation of subtropical mode water in the North Atlantic. The North Atlantic Ocean hosts the largest volume of global subtropical mode waters (STMWs) in the world, which serve as heat, carbon and oxygen silos in the ocean interior. STMWs are formed in the Gulf Stream region where thermal fronts are pervasive and result in feedback with the atmosphere. However, their roles in STMW formation have been overlooked. Using eddy-resolving global climate simulations, we find that suppressing local frontal-scale ocean-to-atmosphere (FOA) feedback leads to STMW formation being reduced almost by half. This is because FOA feedback enlarges STMW outcropping, attributable to the mixed layer deepening associated with cumulative excessive latent heat loss due to higher wind speeds and greater air-sea humidity contrast driven by the Gulf Stream fronts. Such enhanced heat loss overshadows the stronger restratification induced by vertical eddies and turbulent heat transport, making STMW colder and heavier. With more realistic representation of FOA feedback, the eddy-present/rich coupled global climate models reproduce the observed STMWs much better than the eddy-free ones. Such improvement in STMW production cannot be achieved, even with the oceanic resolution solely refined but without coupling to the overlying atmosphere in oceanic general circulation models. Our findings highlight the need to resolve FOA feedback to ameliorate the common severe underestimation of STMW and associated heat and carbon uptakes in earth system models.
关键词	North Atlantic subtropical mode water Gulf Stream thermal fronts frontal-scale ocean-to-atmosphere feedback eddy-resolving coupled global climate model
DOI	10.1093/nsr/nwad133
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001019354700001
出版者	OXFORD UNIV PRESS
WOS关键词	CLIMATE MODELS ; HEAT FLUXES ; SEA ; OCEAN ; SCALE ; VARIABILITY ; PACIFIC ; SYSTEM ; EDDIES ; CO2
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182404
专题	海洋环流与波动重点实验室
通讯作者	Gan, Bolan
作者单位	1.Ocean Univ China, Frontier Sci Ctr Deep Ocean Multispheres & Earth S, Phys Oceanog Lab, Qingdao 266100, Peoples R China 2.Laoshan Lab, Qingdao 266200, Peoples R China 3.Natl Ctr Atmospher Res, Boulder, CO 80305 USA 4.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Gan, Bolan,Yu, Jingjie,Wu, Lixin,et al. North Atlantic subtropical mode water formation controlled by Gulf Stream fronts[J]. NATIONAL SCIENCE REVIEW,2023:10.
APA	Gan, Bolan.,Yu, Jingjie.,Wu, Lixin.,Danabasoglu, Gokhan.,Small, R. Justin.,...&Chen, Zhaohui.(2023).North Atlantic subtropical mode water formation controlled by Gulf Stream fronts.NATIONAL SCIENCE REVIEW,10.
MLA	Gan, Bolan,et al."North Atlantic subtropical mode water formation controlled by Gulf Stream fronts".NATIONAL SCIENCE REVIEW (2023):10.