The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean
The atmospheric deposition of soluble (bioaccessible) iron enhances ocean primary productivity and subsequent atmospheric CO 2 sequestration in iron-limited ocean basins, especially the Southern Ocean. While anthropogenic sources have been recently suggested to be important in some northern hemisphe...
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ftosti:oai:osti.gov:1978714 2023-07-30T04:06:57+02:00 The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean Liu, Mingxu Matsui, Hitoshi Hamilton, Douglas S. Lamb, Kara D. Rathod, Sagar D. Schwarz, Joshua P. Mahowald, Natalie M. 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1978714 https://www.osti.gov/biblio/1978714 https://doi.org/10.1038/s41612-022-00250-w unknown http://www.osti.gov/servlets/purl/1978714 https://www.osti.gov/biblio/1978714 https://doi.org/10.1038/s41612-022-00250-w doi:10.1038/s41612-022-00250-w 37 INORGANIC ORGANIC PHYSICAL AND ANALYTICAL CHEMISTRY 2023 ftosti https://doi.org/10.1038/s41612-022-00250-w 2023-07-11T10:27:28Z The atmospheric deposition of soluble (bioaccessible) iron enhances ocean primary productivity and subsequent atmospheric CO 2 sequestration in iron-limited ocean basins, especially the Southern Ocean. While anthropogenic sources have been recently suggested to be important in some northern hemisphere oceans, the role in the Southern Ocean remains ambiguous. By comparing multiple model simulations with the new aircraft observations for anthropogenic iron, we show that anthropogenic soluble iron deposition flux to the Southern Ocean could be underestimated by more than a factor of ten in previous modeling estimates. Our improved estimate for the anthropogenic iron budget enhances its contribution on the soluble iron deposition in the Southern Ocean from about 10% to 60%, implying a dominant role of anthropogenic sources. We predict that anthropogenic soluble iron deposition in the Southern Ocean is reduced substantially (30-90%) by the year 2100, and plays a major role in the future evolution of atmospheric soluble iron inputs to the Southern Ocean. Other/Unknown Material Southern Ocean SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Southern Ocean npj Climate and Atmospheric Science 5 1 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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37 INORGANIC ORGANIC PHYSICAL AND ANALYTICAL CHEMISTRY |
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37 INORGANIC ORGANIC PHYSICAL AND ANALYTICAL CHEMISTRY Liu, Mingxu Matsui, Hitoshi Hamilton, Douglas S. Lamb, Kara D. Rathod, Sagar D. Schwarz, Joshua P. Mahowald, Natalie M. The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean |
topic_facet |
37 INORGANIC ORGANIC PHYSICAL AND ANALYTICAL CHEMISTRY |
description |
The atmospheric deposition of soluble (bioaccessible) iron enhances ocean primary productivity and subsequent atmospheric CO 2 sequestration in iron-limited ocean basins, especially the Southern Ocean. While anthropogenic sources have been recently suggested to be important in some northern hemisphere oceans, the role in the Southern Ocean remains ambiguous. By comparing multiple model simulations with the new aircraft observations for anthropogenic iron, we show that anthropogenic soluble iron deposition flux to the Southern Ocean could be underestimated by more than a factor of ten in previous modeling estimates. Our improved estimate for the anthropogenic iron budget enhances its contribution on the soluble iron deposition in the Southern Ocean from about 10% to 60%, implying a dominant role of anthropogenic sources. We predict that anthropogenic soluble iron deposition in the Southern Ocean is reduced substantially (30-90%) by the year 2100, and plays a major role in the future evolution of atmospheric soluble iron inputs to the Southern Ocean. |
author |
Liu, Mingxu Matsui, Hitoshi Hamilton, Douglas S. Lamb, Kara D. Rathod, Sagar D. Schwarz, Joshua P. Mahowald, Natalie M. |
author_facet |
Liu, Mingxu Matsui, Hitoshi Hamilton, Douglas S. Lamb, Kara D. Rathod, Sagar D. Schwarz, Joshua P. Mahowald, Natalie M. |
author_sort |
Liu, Mingxu |
title |
The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean |
title_short |
The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean |
title_full |
The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean |
title_fullStr |
The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean |
title_full_unstemmed |
The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean |
title_sort |
underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the southern ocean |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1978714 https://www.osti.gov/biblio/1978714 https://doi.org/10.1038/s41612-022-00250-w |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://www.osti.gov/servlets/purl/1978714 https://www.osti.gov/biblio/1978714 https://doi.org/10.1038/s41612-022-00250-w doi:10.1038/s41612-022-00250-w |
op_doi |
https://doi.org/10.1038/s41612-022-00250-w |
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npj Climate and Atmospheric Science |
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5 |
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1 |
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1772819917406470144 |