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The Southern Ocean with the largest uptake of anthropogenic nitrogen into the ocean interior

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Title: The Southern Ocean with the largest uptake of anthropogenic nitrogen into the ocean interior
Authors: Pan, Xianliang L. Browse this author
Li, Bofeng F. Browse this author
Watanabe, Yutaka W. Browse this author →KAKEN DB
Issue Date: 1-Jun-2020
Publisher: Nature Publishing Group
Journal Title: Scientific reports
Volume: 10
Issue: 1
Start Page: 8838
Publisher DOI: 10.1038/s41598-020-65661-2
Abstract: The oceanic external nitrogen (N-ex) deposition to the global ocean is expected to rise significantly owing to human activities. The Southern Ocean (SO) is an important pathway, which brings external influences into the ocean interior. It touches the borders of several developing countries that emit a large amount of anthropogenic nitrogen. To comprehend the dynamics of N-ex in the SO, we developed a new method to assess the change in the oceanic uptake of N-ex (Delta N-ex) in the entire SO. We obtained the spatiotemporal distribution of Delta N-ex in the SO by applying this method to a high-resolution grid data constructed using ship-based observations. During the 1990s to the 2010s, N-ex increased significantly by 67 +/- 1 Tg-N year(-1) in the SO. By comparing this value with the rate of N-ex deposition to the ocean, the SO has received similar to 70% of N-ex deposition to the global ocean, indicating that it is the largest uptake region of anthropogenic nitrogen into the ocean interior.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/78996
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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