Vertical eddy iron fluxes support primary production in the open Southern Ocean
Abstract The primary productivity of the Southern Ocean ecosystem is limited by iron availability. Away from benthic and aeolian sources, iron reaches phytoplankton primarily when iron-rich subsurface waters enter the euphotic zone. Here, eddy-resolving physical/biogeochemical simulations of a seaso...
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2020
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Online Access: | http://dx.doi.org/10.1038/s41467-020-14955-0 http://www.nature.com/articles/s41467-020-14955-0.pdf http://www.nature.com/articles/s41467-020-14955-0 |
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crspringernat:10.1038/s41467-020-14955-0 2023-05-15T18:23:51+02:00 Vertical eddy iron fluxes support primary production in the open Southern Ocean Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina National Aeronautics and Space Administration National Science Foundation Agence Nationale de la Recherche 2020 http://dx.doi.org/10.1038/s41467-020-14955-0 http://www.nature.com/articles/s41467-020-14955-0.pdf http://www.nature.com/articles/s41467-020-14955-0 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 11, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2020 crspringernat https://doi.org/10.1038/s41467-020-14955-0 2022-01-04T07:39:04Z Abstract The primary productivity of the Southern Ocean ecosystem is limited by iron availability. Away from benthic and aeolian sources, iron reaches phytoplankton primarily when iron-rich subsurface waters enter the euphotic zone. Here, eddy-resolving physical/biogeochemical simulations of a seasonally-forced, open-Southern-Ocean ecosystem reveal that mesoscale and submesoscale isopycnal stirring effects a cross-mixed-layer-base transport of iron that sustains primary productivity. The eddy-driven iron supply and consequently productivity increase with model resolution. We show the eddy flux can be represented by specific well-tuned eddy parametrizations. Since eddy mixing rates are sensitive to wind forcing and large-scale hydrographic changes, these findings suggest a new mechanism for modulating the Southern Ocean biological pump on climate timescales. Article in Journal/Newspaper Southern Ocean Springer Nature (via Crossref) Southern Ocean Nature Communications 11 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
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English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina Vertical eddy iron fluxes support primary production in the open Southern Ocean |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract The primary productivity of the Southern Ocean ecosystem is limited by iron availability. Away from benthic and aeolian sources, iron reaches phytoplankton primarily when iron-rich subsurface waters enter the euphotic zone. Here, eddy-resolving physical/biogeochemical simulations of a seasonally-forced, open-Southern-Ocean ecosystem reveal that mesoscale and submesoscale isopycnal stirring effects a cross-mixed-layer-base transport of iron that sustains primary productivity. The eddy-driven iron supply and consequently productivity increase with model resolution. We show the eddy flux can be represented by specific well-tuned eddy parametrizations. Since eddy mixing rates are sensitive to wind forcing and large-scale hydrographic changes, these findings suggest a new mechanism for modulating the Southern Ocean biological pump on climate timescales. |
author2 |
National Aeronautics and Space Administration National Science Foundation Agence Nationale de la Recherche |
format |
Article in Journal/Newspaper |
author |
Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina |
author_facet |
Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina |
author_sort |
Uchida, Takaya |
title |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_short |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_full |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_fullStr |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_full_unstemmed |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_sort |
vertical eddy iron fluxes support primary production in the open southern ocean |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41467-020-14955-0 http://www.nature.com/articles/s41467-020-14955-0.pdf http://www.nature.com/articles/s41467-020-14955-0 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Nature Communications volume 11, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-14955-0 |
container_title |
Nature Communications |
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11 |
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1 |
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1766204007562346496 |