气候变化领域集成服务门户(CCPortal): Storms drive outgassing of CO2 in the subpolar Southern Ocean

CCPortal

DOI	10.1038/s41467-021-27780-w
	Storms drive outgassing of CO2 in the subpolar Southern Ocean
	Nicholson S.-A.; Whitt D.B.; Fer I.; du Plessis M.D.; Lebéhot A.D.; Swart S.; Sutton A.J.; Monteiro P.M.S.
发表日期	2022
ISSN	2041-1723
卷号	13 期号:1
英文摘要	The subpolar Southern Ocean is a critical region where CO2 outgassing influences the global mean air-sea CO2 flux (FCO2). However, the processes controlling the outgassing remain elusive. We show, using a multi-glider dataset combining FCO2 and ocean turbulence, that the air-sea gradient of CO2 (∆pCO2) is modulated by synoptic storm-driven ocean variability (20 µatm, 1–10 days) through two processes. Ekman transport explains 60% of the variability, and entrainment drives strong episodic CO2 outgassing events of 2–4 mol m−2 yr−1. Extrapolation across the subpolar Southern Ocean using a process model shows how ocean fronts spatially modulate synoptic variability in ∆pCO2 (6 µatm2 average) and how spatial variations in stratification influence synoptic entrainment of deeper carbon into the mixed layer (3.5 mol m−2 yr−1 average). These results not only constrain aliased-driven uncertainties in FCO2 but also the effects of synoptic variability on slower seasonal or longer ocean physics-carbon dynamics. © 2022, The Author(s).
语种	英语
scopus关键词	air-sea interaction; carbon dioxide; carbon flux; Ekman transport; entrainment; mixed layer; storm; Southern Ocean
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/251260
作者单位	Southern Ocean Carbon-Climate Observatory (SOCCO), CSIR, Cape Town, South Africa; National Center for Atmospheric Research, Boulder, CO, United States; NASA Ames Research Center, Mountain View, CA, United States; Geophysical Institute, University of Bergen, Bergen, Norway; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden; Department of Oceanography, University of Cape Town, Cape Town, South Africa; Marine and Antarctic Research centre for Innovation and Sustainability (MARIS), University of Cape Town, Cape Town, South Africa; NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States
推荐引用方式 GB/T 7714	Nicholson S.-A.,Whitt D.B.,Fer I.,et al. Storms drive outgassing of CO2 in the subpolar Southern Ocean[J],2022,13(1).
APA	Nicholson S.-A..,Whitt D.B..,Fer I..,du Plessis M.D..,Lebéhot A.D..,...&Monteiro P.M.S..(2022).Storms drive outgassing of CO2 in the subpolar Southern Ocean.Nature Communications,13(1).
MLA	Nicholson S.-A.,et al."Storms drive outgassing of CO2 in the subpolar Southern Ocean".Nature Communications 13.1(2022).