气候变化领域集成服务门户(CCPortal): Mechanisms Underlying Recent Arctic Atlantification

CCPortal

DOI	10.1029/2020GL088036
	Mechanisms Underlying Recent Arctic Atlantification
	Asbjørnsen H.; Årthun M.; Skagseth Ø.; Eldevik T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still debated, particularly regarding the relative importance of oceanic and atmospheric heat fluxes. Here, heat budgets along main Atlantic water pathways through the Barents Sea and Fram Strait are constructed to investigate the mechanisms of Atlantification during 1993–2014. The largest warming trends occur south of the winter ice edge, with ocean advection as the main driver. Warming in the marginal ice zone is mainly due to low surface heat loss from the 1990s to the mid-2000s. In the ice-covered northwestern Barents Sea, ocean advection and air-sea heat fluxes act in concert to drive a gradual warming of the upper ocean. Despite a weakened stratification, no evidence is found of vertical oceanic temperature fluxes driving this upper-ocean warming. © 2020. The Authors.
英文关键词	Advection; Ferroelectric RAM; Heat flux; Sea ice; Air-sea heat flux; Arctic ocean; Atlantic water; Atmospheric heat; Marginal Ice Zone; Oceanic temperature; Sea ice concentration; Surface heat loss; Oceanography; concentration (composition); heat flux; marginal ice zone; sea ice; stratification; temperature effect; trend analysis; warming; Arctic; Arctic Ocean; Barents Sea; Fram Strait
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169945
作者单位	Geophysical Institute, University of Bergen, Bergen, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; Institute of Marine Research, Bergen, Norway
推荐引用方式 GB/T 7714	Asbjørnsen H.,Årthun M.,Skagseth Ø.,et al. Mechanisms Underlying Recent Arctic Atlantification[J],2020,47(15).
APA	Asbjørnsen H.,Årthun M.,Skagseth Ø.,&Eldevik T..(2020).Mechanisms Underlying Recent Arctic Atlantification.Geophysical Research Letters,47(15).
MLA	Asbjørnsen H.,et al."Mechanisms Underlying Recent Arctic Atlantification".Geophysical Research Letters 47.15(2020).