Destinations and Pathways of the Indonesian Throughflow Water in the Indian Ocean

doi:10.1175/JCLI-D-22-0631.1

IOCAS-IR > 海洋环流与波动重点实验室

	Destinations and Pathways of the Indonesian Throughflow Water in the Indian Ocean
	Guo, Yaru 1; Li, Yuanlong 1,2; Wang, Fan1,2
	2023-06-01
发表期刊	JOURNAL OF CLIMATE
ISSN	0894-8755
卷号	36 期号:11 页码:3717-3735
通讯作者	Li, Yuanlong(liyuanlong@qdio.ac.cn)
摘要	Passage of the Indonesian Throughflow (ITF) water through the Indian Ocean constitutes an essential sec- tion of the upper limb of the global ocean conveyor belt. Although existing studies have identified a major exit of the ITF water to the Atlantic Ocean through the Agulhas Current system, our knowledge regarding other possible destinations and primary pathways remains limited. This study applies the Connectivity Modeling System (CMS) particle tracking algo- rithm to seven model-based ocean current datasets. The results reveal a robust return path of the ITF water to the Pacific Ocean. The partition ratio between the Atlantic and Pacific routes is 1.6060.54 to 1, with the uncertainty representing in- terdataset spread. The average transit time across the Indian Ocean is 10-20 years to the Atlantic and 15-30 years to the Pacific. The "transit velocity" is devised to describe the three-dimensional pathways in a quantitative sense. Its distribution demonstrates that the recirculation structures in the southwestern subtropical Indian Ocean favor the exit to the Atlantic, while the Antarctic Circumpolar Current in the Southern Ocean serves as the primary corridor to the Pacific. Our analysis also suggests the vital impact of vertical motions. In idealized tracing experiments inhibiting vertical currents and turbulent mixing, more water tends to linger over the Indian Ocean or return to the Pacific. Turbulence mixing also contributes to vertical motions but only slightly affects the destinations and pathways of ITF water.
关键词	Indian Ocean Lagrangian circulation transport Ocean circulation Vertical motion
DOI	10.1175/JCLI-D-22-0631.1
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Key R&D Program of China[2019YFA0606702] ; Shandong Provincial Natural Science Foundation[ZR2020JQ17] ; China Postdoctoral Science Foundation[2022M723182]
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000986741500001
出版者	AMER METEOROLOGICAL SOC
WOS关键词	ATLANTIC OVERTURNING CIRCULATION ; LEEUWIN CURRENT ; INTERANNUAL VARIABILITY ; AGULHAS LEAKAGE ; EQUATORIAL UNDERCURRENT ; WESTERN-AUSTRALIA ; HEAT-TRANSPORT ; PACIFIC ; DYNAMICS ; SYSTEM
引用统计	被引频次：5[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/337002/183006
专题	海洋环流与波动重点实验室
通讯作者	Li, Yuanlong
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Laoshan Lab, Qingdao, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Guo, Yaru,Li, Yuanlong,Wang, Fan. Destinations and Pathways of the Indonesian Throughflow Water in the Indian Ocean[J]. JOURNAL OF CLIMATE,2023,36(11):3717-3735.
APA	Guo, Yaru,Li, Yuanlong,&Wang, Fan.(2023).Destinations and Pathways of the Indonesian Throughflow Water in the Indian Ocean.JOURNAL OF CLIMATE,36(11),3717-3735.
MLA	Guo, Yaru,et al."Destinations and Pathways of the Indonesian Throughflow Water in the Indian Ocean".JOURNAL OF CLIMATE 36.11(2023):3717-3735.