气候变化领域集成服务门户(CCPortal): Enhanced oceanic CO2 uptake along the rapidly changing West Antarctic Peninsula

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DOI	10.1038/s41558-019-0552-3
	Enhanced oceanic CO2 uptake along the rapidly changing West Antarctic Peninsula
	Brown M.S.; Munro D.R.; Feehan C.J.; Sweeney C.; Ducklow H.W.; Schofield O.M.
发表日期	2019
ISSN	1758678X
EISSN	1758-6798
卷号	9 期号:9 页码:678-+
英文摘要	The global ocean is an important sink for anthropogenic CO2 (ref. 1). Nearly half of the oceanic CO2 uptake occurs in the Southern Ocean2. Although the role of the Southern Ocean CO2 sink in the global carbon cycle is recognized, there are uncertainties regarding its contemporary trend3,4, with a need for improved mechanistic understanding, especially in productive Antarctic coastal regions experiencing substantial changes in temperature and sea ice5. Here, we demonstrate strong coupling between summer upper ocean stability, phytoplankton dynamics and oceanic CO2 uptake along the rapidly changing West Antarctic Peninsula using a 25-year dataset (1993–2017). Greater upper ocean stability drives enhanced biological production and biological dissolved inorganic carbon drawdown, resulting in greater oceanic CO2 uptake. Diatoms achieve higher biomass, oceanic CO2 uptake and uptake efficiency than other phytoplankton. Over the past 25 years, changes in sea ice dynamics have driven an increase in upper ocean stability, phytoplankton biomass and biological dissolved inorganic carbon drawdown, resulting in a nearly fivefold increase in summer oceanic CO2 uptake. We hypothesize that continued warming and declines in sea ice will lead to a decrease in biological dissolved inorganic carbon drawdown, negatively impacting summer oceanic CO2 uptake. These results from the West Antarctic Peninsula provide a framework to understand how oceanic CO2 uptake in other Antarctic coastal regions may be altered due to climate change. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
学科领域	Environmental Sciences;Environmental Studies;Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000483551700018
scopus关键词	Bacillariophyta
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/83450
作者单位	Center for Ocean Observing Leadership, Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, United States; Department of Atmospheric and Oceanic Sciences, and Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; Department of Biology, Montclair State University, Montclair, NJ, United States; Global Monitoring Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, 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
推荐引用方式 GB/T 7714	Brown M.S.,Munro D.R.,Feehan C.J.,et al. Enhanced oceanic CO2 uptake along the rapidly changing West Antarctic Peninsula[J],2019,9(9):678-+.
APA	Brown M.S.,Munro D.R.,Feehan C.J.,Sweeney C.,Ducklow H.W.,&Schofield O.M..(2019).Enhanced oceanic CO2 uptake along the rapidly changing West Antarctic Peninsula.Nature Climate Change,9(9),678-+.
MLA	Brown M.S.,et al."Enhanced oceanic CO2 uptake along the rapidly changing West Antarctic Peninsula".Nature Climate Change 9.9(2019):678-+.