期刊
NATURE GEOSCIENCE
卷 4, 期 9, 页码 606-610出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ngeo1193
关键词
-
资金
- NASA [07-NIP07-0036]
- Institut National des Sciences de l'Univers (INSU)
- Institut Paul Emile Victor (IPEV) in France
- French program LEFE/FlamenCO2, a component of SOLAS-France
- European Integrated Project [511176]
- NOAA [NA080AR4320754]
Oceanic uptake of carbon dioxide substantially reduces the rate at which anthropogenic carbon accumulates in the atmosphere(1), slowing global climate change. Some studies suggest that the rate at which the oceans take up carbon has significantly decreased in recent years(2-8). Others suggest that decadal variability confounds the detection of long-term trends(9-11). Here, we examine trends in the partial pressure of carbon dioxide in the surface waters of three large biogeographic regions in the North Atlantic, using observational data collected between 1981 and 2009. We compare these oceanic observations with trends in atmospheric carbon dioxide levels, taken from a global observational network. We show that trends in oceanic carbon dioxide concentrations are variable on a decadal timescale, often diverging from trends in atmospheric carbon dioxide. However, when the entire 29-year period is considered, oceanic trends converge with atmospheric trends in all three regions; it takes 25 years for this long-term trend to emerge and overcome the influence of decadal-scale variability. Furthermore, in the southernmost biome, the data suggest that warming-driven by a multidecadal climate oscillation and anthropogenic forcing(12,13)-has started to reduce oceanic uptake of carbon in recent years.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据