气候变化领域集成服务门户(CCPortal): Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover

CCPortal

DOI	10.1029/2020GL088051
	Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover
	DeGrandpre M.; Evans W.; Timmermans M.-L.; Krishfield R.; Williams B.; Steele M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	Less than three decades ago only a small fraction of the Arctic Ocean (AO) was ice free and then only for short periods. The ice cover kept sea surface pCO2 at levels lower relative to other ocean basins that have been exposed year round to ever increasing atmospheric levels. In this study, we evaluate sea surface pCO2 measurements collected over a 6-year period along a fixed cruise track in the Canada Basin. The measurements show that mean pCO2 levels are significantly higher during low ice years. The pCO2 increase is likely driven by ocean surface heating and uptake of atmospheric CO2 with large interannual variability in the contributions of these processes. These findings suggest that increased ice-free periods will further increase sea surface pCO2, reducing the Canada Basin's current role as a net sink of atmospheric CO2. ©2020. The Authors.
英文关键词	Carbon; Carbon dioxide; Oceanography; Surface waters; Arctic ocean; Atmospheric levels; Canada basin; Cruise track; Interannual variability; Ocean basins; Ocean surfaces; Short periods; Ice; carbon cycle; cruise report; heating; ice cover; sea surface; snowmelt; source-sink dynamics; water chemistry; Arctic Ocean; Canada Basin
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/170223
作者单位	Department of Chemistry and Biochemistry, University of Montana, Missoula, MT, United States; Hakai Institute, Heriot Bay, BC, Canada; Department of Earth and Planetary Sciences, Yale University, New Haven, CT, United States; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Institute of Ocean Sciences, Sidney, BC, Canada; Applied Physics Laboratory, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	DeGrandpre M.,Evans W.,Timmermans M.-L.,et al. Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover[J],2020,47(12).
APA	DeGrandpre M.,Evans W.,Timmermans M.-L.,Krishfield R.,Williams B.,&Steele M..(2020).Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover.Geophysical Research Letters,47(12).
MLA	DeGrandpre M.,et al."Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover".Geophysical Research Letters 47.12(2020).