Cross-Shelf Carbon Transport in the East China Sea and Its Future Trend Under Global Warming

doi:10.1029/2022JC019403

IOCAS-IR > 海洋环流与波动重点实验室

	Cross-Shelf Carbon Transport in the East China Sea and Its Future Trend Under Global Warming
	Hao, Jiajia 1,2,3; Yuan, Dongliang1,2,3,4,5 ; He, Lei 6,7; Yuan, Huamao 3,5,8; Su, Jian 9; Pohlmann, Thomas 10; Ran, Xiangbin 11
	2024
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	129 期号:1 页码:19
通讯作者	Yuan, Dongliang([email protected]) ; He, Lei([email protected])
摘要	The cross-shelf carbon transports across a section along the 100 m isobath from Taiwan to Cheju are estimated based on carbon concentration observations and ocean currents simulated by a regionally zoomed ocean-atmosphere coupled model. Results show that the net cross-shelf particulate organic carbon, dissolved organic carbon, and dissolved inorganic carbon transports are in the offshore direction at 1.81 +/- 0.22, 51.8 +/- 2.85, and 783 +/- 58.9 TgC yr-1, respectively, which are high in spring and summer and low in winter and fall following the seasonality of the offshore volume transport. The carbon is transported into the East China Sea (ECS) mainly by the Taiwan Warm Current and the Yellow Sea Warm Current, whereas they are carried out of the ECS mainly by the East China Sea Current extension and the recirculation north of Taiwan. Assuming steady biological activity, future net total organic carbon transports are projected to increase by 5%similar to 19% offshore at the end of the 21st century, with the maximum increase in winter, in a high greenhouse gas emission scenario of RCP8.5. The increased carbon transports are due to the increased offshore volume transport, transferring more carbon-rich coastal water away from the shelf in the warming future than at present. The results quantify cross-shelf carbon burial in the ECS in the background of global warming. Carbon transport due to water exchange between the continental shelf and the open ocean is one of the most important components of the world ocean carbon budgets. In this study, the cross-shelf carbon transport in the East China Sea (ECS) is estimated based on in situ carbon concentration observations and simulated ocean currents by an ocean-atmosphere coupled model. The use of the simulated currents is to avoid a bogus volume surplus in the estimates of the carbon transports. The offshore and the onshore volume transports, with significantly different carbon concentrations, are found to have a strong seasonal cycle and increase in the background of global warming, both of which are much larger than their difference, a.k.a. the net volume transport. As a result, the net cross-shelf carbon transports are in the offshore direction and are high in spring and summer and low in winter and fall. The organic carbon transports are projected to increase due to the ongoing global warming. These changes in the carbon burial need to be considered when assessing the impact of human activities and warming on the global carbon cycle. Our work would provide scientific evidence for increasing carbon sinks in the ECS in the warming future. Carbon transports across the ECS shelf were estimated based on carbon concentration observations and simulated currentsOffshore carbon transports are found induced by the ECSC from the inner shelf to the shelf breakThe organic carbon transports are projected to increase with the global warming at the end of the 21st century
关键词	cross-shelf transport carbon transport East China Sea global warming
DOI	10.1029/2022JC019403
收录类别	SCI
语种	英语
资助项目	CAS; NSFC[42149902]; NSFC[92258301]; NSFC[2020YFA0608800]; National Key R&D Program of China[NORC2011-06]; The Taishan Scholar Program; The Kunpeng Outstanding Scholar Project of the FIO/MNR of China; NSFC Open Research Cruise[NORC2013-02]; NSFC Open Research Cruise[NORC2014-02]; CODC, IOCAS; [41576016]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001149698000001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	YELLOW SEA ; ORGANIC-CARBON ; CO2 FLUXES ; MATTER ; DISTRIBUTIONS ; VARIABILITY ; CIRCULATION ; IMPACTS ; EDDIES ; TAIWAN
引用统计	被引频次：1[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/337002/184321
专题	海洋环流与波动重点实验室海洋生态与环境科学重点实验室
通讯作者	Yuan, Dongliang; He, Lei
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 3.Laoshan Lab, Qingdao, Peoples R China 4.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sci & Numer Modeling, Shandong Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China 6.Sun Yat Sen Univ, Sch Marine Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 7.Guangdong Prov Key Lab Marine Resources & Coastal, Zhuhai, Peoples R China 8.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 9.Danish Meteorol Inst, Copenhagen, Denmark 10.Univ Hamburg, Inst Oceanog, Ctr Earth Syst Res & Sustainabil, Hamburg, Germany 11.Minist Nat Resources, Inst Oceanog 1, Res Ctr Marine Ecol, Qingdao, Peoples R China
第一作者单位	海洋环流与波动重点实验室
通讯作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Hao, Jiajia,Yuan, Dongliang,He, Lei,et al. Cross-Shelf Carbon Transport in the East China Sea and Its Future Trend Under Global Warming[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2024,129(1):19.
APA	Hao, Jiajia.,Yuan, Dongliang.,He, Lei.,Yuan, Huamao.,Su, Jian.,...&Ran, Xiangbin.(2024).Cross-Shelf Carbon Transport in the East China Sea and Its Future Trend Under Global Warming.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,129(1),19.
MLA	Hao, Jiajia,et al."Cross-Shelf Carbon Transport in the East China Sea and Its Future Trend Under Global Warming".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 129.1(2024):19.