气候变化领域集成服务门户(CCPortal): Southern Annular Mode Influence on Wintertime Ventilation of the Southern Ocean Detected in Atmospheric O2 and CO2 Measurements

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DOI	10.1029/2019GL085667
	Southern Annular Mode Influence on Wintertime Ventilation of the Southern Ocean Detected in Atmospheric O2 and CO2 Measurements
	Nevison C.D.; Munro D.R.; Lovenduski N.S.; Keeling R.F.; Manizza M.; Morgan E.J.; Rödenbeck C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	The Southern Annular Mode (SAM) is the dominant mode of climate variability in the Southern Ocean, but only a few observational studies have linked variability in SAM to changes in ocean circulation. Atmospheric potential oxygen (APO) combines atmospheric O2/N2 and CO2 data to mask the influence of terrestrial exchanges, yielding a tracer that is sensitive mainly to ocean circulation and biogeochemistry. We show that observed wintertime anomalies of APO are significantly correlated to SAM in 25- to 30-year time series at three Southern Hemisphere sites, while CO2 anomalies are also weakly correlated. We find additional correlations between SAM and O2 air-sea fluxes in austral winter inferred from both an atmospheric inversion of observed APO and a forced ocean biogeochemistry model simulation. The model results indicate that the correlation with SAM is mechanistically linked to stronger wind speeds and upwelling, which brings oxygen-depleted deep waters to the surface. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Biogeochemistry; Carbon dioxide; Air sea flux; Antarctic oscillation; Atmospheric potential oxygen; Seasonal cycle; Southern Annular Mode; Oceanography; air-sea interaction; Antarctic Oscillation; atmosphere-ocean coupling; biogeochemistry; carbon dioxide; oceanic circulation; seasonal variation; Southern Hemisphere; winter; Southern 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/170645
作者单位	Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Global Monitoring Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, United States; Scripps Institution of Oceanography, University of California, La Jolla, CA, United States; Max Planck Institute, Jena, Germany
推荐引用方式 GB/T 7714	Nevison C.D.,Munro D.R.,Lovenduski N.S.,et al. Southern Annular Mode Influence on Wintertime Ventilation of the Southern Ocean Detected in Atmospheric O2 and CO2 Measurements[J],2020,47(4).
APA	Nevison C.D..,Munro D.R..,Lovenduski N.S..,Keeling R.F..,Manizza M..,...&Rödenbeck C..(2020).Southern Annular Mode Influence on Wintertime Ventilation of the Southern Ocean Detected in Atmospheric O2 and CO2 Measurements.Geophysical Research Letters,47(4).
MLA	Nevison C.D.,et al."Southern Annular Mode Influence on Wintertime Ventilation of the Southern Ocean Detected in Atmospheric O2 and CO2 Measurements".Geophysical Research Letters 47.4(2020).