气候变化领域集成服务门户(CCPortal): Labrador Sea freshening linked to Beaufort Gyre freshwater release

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DOI	10.1038/s41467-021-21470-3
	Labrador Sea freshening linked to Beaufort Gyre freshwater release
	Zhang J.; Weijer W.; Steele M.; Cheng W.; Verma T.; Veneziani M.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The Beaufort Gyre (BG), the largest Arctic Ocean freshwater reservoir, has drastically increased its liquid freshwater content by 40% in the past two decades. If released within a short period, the excess freshwater could potentially impact the large-scale ocean circulation by freshening the upper subpolar North Atlantic. Here, we track BG-sourced freshwater using passive tracers in a global ocean sea-ice model and show that this freshwater exited the Arctic mostly through the Canadian Arctic Archipelago, rather than Fram Strait, during an historical release event in 1983–1995. The Labrador Sea is the most affected region in the subpolar North Atlantic, with a freshening of 0.2 psu on the western shelves and 0.4 psu in the Labrador Current. Given that the present BG freshwater content anomaly is twice the historical analog studied here, the impact of a future rapid release on Labrador Sea salinity could be significant, easily exceeding similar fluxes from Greenland meltwater. © 2021, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
语种	英语
scopus关键词	fresh water; anomaly; global ocean; gyre; numerical model; oceanic circulation; sea ice; Arctic Ocean; Article; Canadian; climate change; comparative study; controlled study; follow up; Greenland; mathematical model; nonhuman; salinity; sea; sea level; surface property; time series analysis; Arctic; Arctic Ocean; Atlantic Ocean; Atlantic Ocean (North); Canada; Canadian Arctic; Fram Strait; Greenland; Labrador Current; Labrador Sea
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250763
作者单位	Computational Physics and Methods, Los Alamos National Laboratory, Los Alamos, NM, United States; Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM, United States; Joint Institute for the Study of the Atmosphere and Ocean, now Cooperative Institute for Climate, Ocean, and Ecosystem Studies, University of Washington, Seattle, WA, United States; NOAA/Pacific Marine Environmental Laboratory, Seattle, WA, United States; Applied Physics Laboratory, University of Washington, Seattle, WA, United States; Fluid Dynamics and Solid Mechanics, Los Alamos National Laboratory, Los Alamos, NM, United States
推荐引用方式 GB/T 7714	Zhang J.,Weijer W.,Steele M.,et al. Labrador Sea freshening linked to Beaufort Gyre freshwater release[J],2021,12(1).
APA	Zhang J.,Weijer W.,Steele M.,Cheng W.,Verma T.,&Veneziani M..(2021).Labrador Sea freshening linked to Beaufort Gyre freshwater release.Nature Communications,12(1).
MLA	Zhang J.,et al."Labrador Sea freshening linked to Beaufort Gyre freshwater release".Nature Communications 12.1(2021).