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

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 (ΔN_ex) in the entire SO. We obtained the spatiotemporal distribution of ΔN_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<

SUBMITTER: Pan XL 

PROVIDER: S-EPMC7264145 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature