气候变化领域集成服务门户(CCPortal): Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene

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DOI	10.1073/pnas.1801049115
	Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene
	Wang X.T.; Cohen A.L.; Luu V.; Ren H.; Su Z.; Haug G.H.; Sigman D.M.
发表日期	2018
ISSN	0027-8424
起始页码	10606
结束页码	10611
卷号	115 期号:42
英文摘要	Human alteration of the global nitrogen cycle intensified over the 1900s. Model simulations suggest that large swaths of the open ocean, including the North Atlantic and the western Pacific, have already been affected by anthropogenic nitrogen through atmospheric transport and deposition. Here we report an ∼130-yearlong record of the 15N/14N of skeleton-bound organic matter in a coral from the outer reef of Bermuda, which provides a test of the hypothesis that anthropogenic atmospheric nitrogen has significantly augmented the nitrogen supply to the open North Atlantic surface ocean. The Bermuda 15N/14N record does not show a longterm decline in the Anthropocene of the amplitude predicted by model simulations or observed in a western Pacific coral 15N/14N record. Rather, the decadal variations in the Bermuda 15N/14N record appear to be driven by the North Atlantic Oscillation, most likely through changes in the formation rate of Subtropical Mode Water. Given that anthropogenic nitrogen emissions have been decreasing in North America since the 1990s, this study suggests that in the coming decades, the open North Atlantic will remain minimally affected by anthropogenic nitrogen deposition. © 2018 National Academy of Sciences. All rights reserved.
英文关键词	Anthropocene; Atmospheric deposition; Nitrogen cycle; North Atlantic
语种	英语
scopus关键词	nitrogen; sea water; Atlantic Ocean; atmosphere; coral reef; ecosystem; human; human activities; nitrogen cycle; North America; temperature; Atlantic Ocean; Atmosphere; Coral Reefs; Ecosystem; Human Activities; Humans; Nitrogen; Nitrogen Cycle; North America; Seawater; Temperature
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160458
作者单位	Wang, X.T., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Cohen, A.L., Department of Marine Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02540, United States; Luu, V., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States; Ren, H., Department of Geosciences, National Taiwan University, Taipei, 106, Taiwan; Su, Z., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Haug, G.H., Climate Geochemistry Department, Max Planck Institute for Chemistry, Mainz, 55128, Germany; Sigman, D.M., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States
推荐引用方式 GB/T 7714	Wang X.T.,Cohen A.L.,Luu V.,et al. Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene[J],2018,115(42).
APA	Wang X.T..,Cohen A.L..,Luu V..,Ren H..,Su Z..,...&Sigman D.M..(2018).Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene.Proceedings of the National Academy of Sciences of the United States of America,115(42).
MLA	Wang X.T.,et al."Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene".Proceedings of the National Academy of Sciences of the United States of America 115.42(2018).