气候变化领域集成服务门户(CCPortal): Interannual variability in the subduction of the South Atlantic subtropical underwater

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DOI	10.1007/s00382-021-05758-0
	Interannual variability in the subduction of the South Atlantic subtropical underwater
	Liu H.; Li S.; Wei Z.
发表日期	2021
ISSN	0930-7575
起始页码	721
结束页码	751
英文摘要	The South Atlantic subtropical underwater (STUW) is a high-salinity water mass formed by subduction within the subtropical gyre. It is a major component of the subtropical cell and affects stratification in the downstream direction due to its high salinity characteristics. Understanding the interannual variability in STUW subduction is essential for quantifying the impact of subtropical variability on the tropical Atlantic. Using the output from the ocean state estimate of the Consortium for Estimating the Circulation and Climate of the Ocean (ECCO), this study investigates the interannual variability in STUW subduction from 1992 to 2016. We find that heat fluxes, wind stress, and wind stress curl cause interannual variability in the subduction rate. Heat fluxes over the subduction area modulate the sea surface buoyancy and regulate the mixed layer depth (MLD) during its deepening and shoaling phases. Additionally, the wind stress curl and zonal wind stress can modulate the size of the subduction area by regulating the probability of particles entrained into the mixed layer within 1 year of tracing. This analysis evaluates the influence of subtropical wind patterns on the South Atlantic subsurface high-salinity water mass, highlighting the impact of heat and wind on the interannual changes in the oceanic component of the hydrological cycle. © 2021, The Author(s).
英文关键词	Heat flux; Interannual variability; Subduction; Subtropical underwater; Wind stress curl
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183491
作者单位	First Institute of Oceanography, and Key Laboratory of Marine Science and Numerical Modeling, Ministry of Natural Resources, Qingdao, 266061, China; Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Shandong Key Laboratory of Marine Science and Numerical Modeling, Qingdao, 266061, China
推荐引用方式 GB/T 7714	Liu H.,Li S.,Wei Z.. Interannual variability in the subduction of the South Atlantic subtropical underwater[J],2021.
APA	Liu H.,Li S.,&Wei Z..(2021).Interannual variability in the subduction of the South Atlantic subtropical underwater.Climate Dynamics.
MLA	Liu H.,et al."Interannual variability in the subduction of the South Atlantic subtropical underwater".Climate Dynamics (2021).