1. Impacts of Atmospheric Anthropogenic Nitrogen on the Open Ocean
- Author
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Peter S. Liss, Jack J. Middelburg, Sybil P. Seitzinger, Raja S. Ganeshram, Slobodan Nickovic, Maren Voss, Frank Dentener, Lauren Zamora, Thomas F. Pedersen, C. M. Moore, Marcel M. M. Kuypers, Lise Lotte Sørensen, Sumei Liu, Douglas G. Capone, Tim Jickells, Julie LaRoche, Reiner Schlitzer, Mitsuo Uematsu, Osvaldo Ulloa, Robert A. Duce, Katye E. Altieri, Bess B. Ward, Richard J. Geider, Joseph M. Prospero, Andreas Oschlies, Alex R. Baker, Kevin R. Arrigo, Rebecca Langlois, James N. Galloway, Sarah Cornell, and Ecosystems Studies
- Subjects
010504 meteorology & atmospheric sciences ,Meteorology ,Nitrogen ,Oceans and Seas ,chemistry.chemical_element ,010501 environmental sciences ,Atmospheric sciences ,01 natural sciences ,chemistry.chemical_compound ,Nitrogen Fixation ,Humans ,Human Activities ,Seawater ,Ecosystem ,14. Life underwater ,Nitrogen cycle ,0105 earth and related environmental sciences ,Multidisciplinary ,Atmosphere ,Global warming ,Biological pump ,Carbon Dioxide ,Radiative forcing ,Reactive Nitrogen Species ,Carbon ,chemistry ,13. Climate action ,Greenhouse gas ,Carbon dioxide ,Environmental science - Abstract
Increasing quantities of atmospheric anthropogenic fixed nitrogen entering the open ocean could account for up to about a third of the ocean's external (nonrecycled) nitrogen supply and up to â¼3% of the annual new marine biological production, â¼0.3 petagram of carbon per year. This input could account for the production of up to â¼1.6 teragrams of nitrous oxide (N 2 O) per year. Although â¼10% of the ocean's drawdown of atmospheric anthropogenic carbon dioxide may result from this atmospheric nitrogen fertilization, leading to a decrease in radiative forcing, up to about two-thirds of this amount may be offset by the increase in N 2 O emissions. The effects of increasing atmospheric nitrogen deposition are expected to continue to grow in the future.
- Published
- 2008
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