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DOI	10.1038/s41598-024-61447-y
	Advection surface-flux balance controls the seasonal steric sea level amplitude
	Hochet, Antoine; Llovel, William; Huck, Thierry; Sevellec, Florian
发表日期	2024
ISSN	2045-2322
起始页码	14
结束页码	1
卷号	14 期号:1
英文摘要	Along with the mean sea level rise due to climate change, the sea level exhibits natural variations at a large number of different time scales. One of the most important is the one linked with the seasonal cycle. In the Northern Hemisphere winter, the sea level is as much as 20 cm below its summer values in some locations. It is customary to associate these variations with the seasonal cycle of the sea surface net heat flux which drives an upper-ocean thermal expansion creating a positive steric sea level anomaly. Here, using a novel framework based on steric sea level variance budget applied to observations and to the Estimating the Circulation and Climate of the Ocean state estimate, we demonstrate that the steric sea level seasonal cycle amplitude results from a balance between the seasonal sea surface net heat flux and the oceanic advective processes. Moreover, for up to 50% of the ocean surface, surface heat fluxes act to damp the seasonal steric sea level cycle amplitude, which is instead forced by oceanic advection processes. We also show that eddies play an important role in damping the steric sea level seasonal cycle. Our study contributes to a better understanding of the steric sea level mechanisms which is crucial to ensure accurate and reliable climate projections.
英文关键词	Seasonal steric sea level; Physical mechanisms; Surface heat fluxes; Ocean advective processes
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001217905100005
来源期刊	SCIENTIFIC REPORTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296269
作者单位	Ifremer; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Universite de Bretagne Occidentale; Institut de Recherche pour le Developpement (IRD); Inria; Universite de Bretagne Occidentale; Centre National de la Recherche Scientifique (CNRS)
推荐引用方式 GB/T 7714	Hochet, Antoine,Llovel, William,Huck, Thierry,et al. Advection surface-flux balance controls the seasonal steric sea level amplitude[J],2024,14(1).
APA	Hochet, Antoine,Llovel, William,Huck, Thierry,&Sevellec, Florian.(2024).Advection surface-flux balance controls the seasonal steric sea level amplitude.SCIENTIFIC REPORTS,14(1).
MLA	Hochet, Antoine,et al."Advection surface-flux balance controls the seasonal steric sea level amplitude".SCIENTIFIC REPORTS 14.1(2024).