气候变化领域集成服务门户(CCPortal): Biophysical Consequences of a Relaxing Beaufort Gyre

CCPortal

DOI	10.1029/2019GL085990
	Biophysical Consequences of a Relaxing Beaufort Gyre
	Zhang J.; Spitz Y.H.; Steele M.; Ashjian C.; Campbell R.; Schweiger A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	A biophysical model shows that Beaufort Gyre (BG) intensification in 2004–2016 is followed by relaxation in 2017–2018, based on a BG variability index. BG intensification leads to enhanced downwelling in the central Canada Basin (CCB) and upwelling along the coast. In the CCB, enhanced downwelling reduces nutrients, thus lowering primary productivity (PP) and plankton biomass. Enhanced upwelling along the coast and in parts of the Chukchi shelf/slope increases nutrients, leading to elevated PP/biomass in the Pacific Arctic Ocean (PAO) outside of the CCB. The overall PAO PP/biomass is dominated by the shelf/slope response and thus increases during BG intensification. As the BG relaxes in 2017–2018, these processes largely reverse, with increasing PP/biomass in the CCB and decreasing PP/biomass in most of the shelf/slope regions. Because the shelf/slope regions are much more productive than the CCB, BG relaxation has the tendency to reduce the overall production in the PAO. ©2019. The Authors.
英文关键词	Nutrients; Sea ice; Arctic ocean; Biophysical model; Down-welling; Gyre circulation; Plankton biomass; Primary productivity; upwelling; Variability index; Plankton; biomass; biophysics; downwelling; plankton; primary production; sea ice; upwelling; Arctic Ocean; Beaufort Sea; Canada Basin; Chukchi Sea; Chukchi Shelf; Pacific Ocean
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/170812
作者单位	University of Washington, Seattle, WA, United States; Oregon State University, Corvallis, OR, United States; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; University of Rhode Island, Kingston, RI, United States
推荐引用方式 GB/T 7714	Zhang J.,Spitz Y.H.,Steele M.,et al. Biophysical Consequences of a Relaxing Beaufort Gyre[J],2020,47(2).
APA	Zhang J.,Spitz Y.H.,Steele M.,Ashjian C.,Campbell R.,&Schweiger A..(2020).Biophysical Consequences of a Relaxing Beaufort Gyre.Geophysical Research Letters,47(2).
MLA	Zhang J.,et al."Biophysical Consequences of a Relaxing Beaufort Gyre".Geophysical Research Letters 47.2(2020).