Ironing Out Fe Residence Time in the Dynamic Upper Ocean
International audience Although iron availability has been shown to limit ocean productivity and influence marine carbon cycling, the rates of processes driving iron's removal and retention in the upper ocean are poorly constrained. Using(234)Th- and sediment-trap data, most of which were colle...
Published in: | Global Biogeochemical Cycles |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.univ-brest.fr/hal-02975939 https://hal.univ-brest.fr/hal-02975939/document https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://doi.org/10.1029/2020GB006592 |
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openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Thorium-234 Iron Geotraces Trace-element concentrations North-Atlantic ocean Southern-Ocean Vertical flux Atmospheric deposition Biogenic silica Acl [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Thorium-234 Iron Geotraces Trace-element concentrations North-Atlantic ocean Southern-Ocean Vertical flux Atmospheric deposition Biogenic silica Acl [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Black, E. Kienast, S. Lemaitre, N. Lam, P. Anderson, R. Planquette, Hélène Planchon, Frédéric Buesseler, K. Ironing Out Fe Residence Time in the Dynamic Upper Ocean |
topic_facet |
Thorium-234 Iron Geotraces Trace-element concentrations North-Atlantic ocean Southern-Ocean Vertical flux Atmospheric deposition Biogenic silica Acl [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Although iron availability has been shown to limit ocean productivity and influence marine carbon cycling, the rates of processes driving iron's removal and retention in the upper ocean are poorly constrained. Using(234)Th- and sediment-trap data, most of which were collected through international GEOTRACES efforts, we perform an unprecedented observation-based assessment of iron export from and residence time in the upper ocean. The majority of these new residence time estimates for total iron in the surface ocean (0-250 m) fall between 10 and 100 days. The upper ocean residence time of dissolved iron, on the other hand, varies and cycles on sub-annual to annual timescales. Collectively, these residence times are shorter than previously thought, and the rates and timescales presented here will contribute to ongoing efforts to integrate iron into global biogeochemical models predicting climate and carbon dioxide sequestration in the ocean in the 21st century and beyond. |
author2 |
Woods Hole Oceanographic Institution (WHOI) Dalhousie University Halifax Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Institute of Geochemistry and Petrology ETH Zürich Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) University of California Santa Cruz (UC Santa Cruz) University of California (UC) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) ANR-13-BS06-0014,GEOVIDE,GEOVIDE, Une étude internationale GEOTRACES le long de la section OVIDE en Atlantique Nord et en Mer du Labrador(2013) ANR-12-PDOC-0025,BITMAP,Biodisponibilité du fer et des métaux traces dans les particules marines(2012) |
format |
Article in Journal/Newspaper |
author |
Black, E. Kienast, S. Lemaitre, N. Lam, P. Anderson, R. Planquette, Hélène Planchon, Frédéric Buesseler, K. |
author_facet |
Black, E. Kienast, S. Lemaitre, N. Lam, P. Anderson, R. Planquette, Hélène Planchon, Frédéric Buesseler, K. |
author_sort |
Black, E. |
title |
Ironing Out Fe Residence Time in the Dynamic Upper Ocean |
title_short |
Ironing Out Fe Residence Time in the Dynamic Upper Ocean |
title_full |
Ironing Out Fe Residence Time in the Dynamic Upper Ocean |
title_fullStr |
Ironing Out Fe Residence Time in the Dynamic Upper Ocean |
title_full_unstemmed |
Ironing Out Fe Residence Time in the Dynamic Upper Ocean |
title_sort |
ironing out fe residence time in the dynamic upper ocean |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.univ-brest.fr/hal-02975939 https://hal.univ-brest.fr/hal-02975939/document https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://doi.org/10.1029/2020GB006592 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles https://hal.univ-brest.fr/hal-02975939 Global Biogeochemical Cycles, 2020, 34 (9), pp.e2020GB006592. ⟨10.1029/2020GB006592⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GB006592 hal-02975939 https://hal.univ-brest.fr/hal-02975939 https://hal.univ-brest.fr/hal-02975939/document https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf doi:10.1029/2020GB006592 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.1029/2020GB006592 |
container_title |
Global Biogeochemical Cycles |
container_volume |
34 |
container_issue |
9 |
_version_ |
1766132232292925440 |
spelling |
ftunivnantes:oai:HAL:hal-02975939v1 2023-05-15T17:33:39+02:00 Ironing Out Fe Residence Time in the Dynamic Upper Ocean Black, E. Kienast, S. Lemaitre, N. Lam, P. Anderson, R. Planquette, Hélène Planchon, Frédéric Buesseler, K. Woods Hole Oceanographic Institution (WHOI) Dalhousie University Halifax Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Institute of Geochemistry and Petrology ETH Zürich Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) University of California Santa Cruz (UC Santa Cruz) University of California (UC) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) ANR-13-BS06-0014,GEOVIDE,GEOVIDE, Une étude internationale GEOTRACES le long de la section OVIDE en Atlantique Nord et en Mer du Labrador(2013) ANR-12-PDOC-0025,BITMAP,Biodisponibilité du fer et des métaux traces dans les particules marines(2012) 2020-09 https://hal.univ-brest.fr/hal-02975939 https://hal.univ-brest.fr/hal-02975939/document https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://doi.org/10.1029/2020GB006592 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GB006592 hal-02975939 https://hal.univ-brest.fr/hal-02975939 https://hal.univ-brest.fr/hal-02975939/document https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf doi:10.1029/2020GB006592 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess CC-BY-ND ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles https://hal.univ-brest.fr/hal-02975939 Global Biogeochemical Cycles, 2020, 34 (9), pp.e2020GB006592. ⟨10.1029/2020GB006592⟩ Thorium-234 Iron Geotraces Trace-element concentrations North-Atlantic ocean Southern-Ocean Vertical flux Atmospheric deposition Biogenic silica Acl [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1029/2020GB006592 2022-11-30T00:59:55Z International audience Although iron availability has been shown to limit ocean productivity and influence marine carbon cycling, the rates of processes driving iron's removal and retention in the upper ocean are poorly constrained. Using(234)Th- and sediment-trap data, most of which were collected through international GEOTRACES efforts, we perform an unprecedented observation-based assessment of iron export from and residence time in the upper ocean. The majority of these new residence time estimates for total iron in the surface ocean (0-250 m) fall between 10 and 100 days. The upper ocean residence time of dissolved iron, on the other hand, varies and cycles on sub-annual to annual timescales. Collectively, these residence times are shorter than previously thought, and the rates and timescales presented here will contribute to ongoing efforts to integrate iron into global biogeochemical models predicting climate and carbon dioxide sequestration in the ocean in the 21st century and beyond. Article in Journal/Newspaper North Atlantic Southern Ocean Université de Nantes: HAL-UNIV-NANTES Southern Ocean Global Biogeochemical Cycles 34 9 |