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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Format: | Article in Journal/Newspaper |
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Online Access: | https://doi.org/10.1029/2020GB006592 https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://hal.univ-brest.fr/hal-02975939 |
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fttriple:oai:gotriple.eu:10670/1.6llbfr 2023-05-15T17:33:08+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 (UCSC) University of California 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 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) 2020-09-01 https://doi.org/10.1029/2020GB006592 https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://hal.univ-brest.fr/hal-02975939 en eng HAL CCSD American Geophysical Union hal-02975939 doi:10.1029/2020GB006592 10670/1.6llbfr https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://hal.univ-brest.fr/hal-02975939 lic_creative-commons Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles Global Biogeochemical Cycles, American Geophysical Union, 2020, 34 (9), pp.e2020GB006592. ⟨10.1029/2020GB006592⟩ Vertical flux Southern-Ocean North-Atlantic ocean Trace-element concentrations Geotraces Iron Thorium-234 Atmospheric deposition Biogenic silica Acl envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.1029/2020GB006592 2023-01-22T17:03:33Z 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 Unknown Southern Ocean Global Biogeochemical Cycles 34 9 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Vertical flux Southern-Ocean North-Atlantic ocean Trace-element concentrations Geotraces Iron Thorium-234 Atmospheric deposition Biogenic silica Acl envir geo |
spellingShingle |
Vertical flux Southern-Ocean North-Atlantic ocean Trace-element concentrations Geotraces Iron Thorium-234 Atmospheric deposition Biogenic silica Acl envir geo 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 |
Vertical flux Southern-Ocean North-Atlantic ocean Trace-element concentrations Geotraces Iron Thorium-234 Atmospheric deposition Biogenic silica Acl envir geo |
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 (UCSC) University of California 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 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://doi.org/10.1029/2020GB006592 https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://hal.univ-brest.fr/hal-02975939 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles Global Biogeochemical Cycles, American Geophysical Union, 2020, 34 (9), pp.e2020GB006592. ⟨10.1029/2020GB006592⟩ |
op_relation |
hal-02975939 doi:10.1029/2020GB006592 10670/1.6llbfr https://hal.univ-brest.fr/hal-02975939/file/2020GB006592.pdf https://hal.univ-brest.fr/hal-02975939 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.1029/2020GB006592 |
container_title |
Global Biogeochemical Cycles |
container_volume |
34 |
container_issue |
9 |
_version_ |
1766131531847303168 |