Iron Biogeochemistry in the High Latitude North Atlantic Ocean
International audience Iron (Fe) is an essential micronutrient for marine microbial organisms, and low supply controls productivity in large parts of the world's ocean. The high latitude North Atlantic is seasonally Fe limited, but Fe distributions and source strengths are poorly constrained. S...
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Online Access: | https://hal.science/hal-02960682 https://hal.science/hal-02960682/document https://hal.science/hal-02960682/file/s41598-018-19472-1.pdf https://doi.org/10.1038/s41598-018-19472-1 |
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ftinsu:oai:HAL:hal-02960682v1 2023-06-18T03:40:32+02:00 Iron Biogeochemistry in the High Latitude North Atlantic Ocean Achterberg, Eric Steigenberger, Sebastian Marsay, Chris Le Moigne, Frédéric A.C. Painter, Stuart Baker, Alex Connelly, Douglas Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste National Oceanography Centre Southampton (NOC) University of Southampton Helmholtz Centre for Ocean Research Kiel (GEOMAR) Skidaway Institute of Oceanography Institute of Oceanography Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, United Kingdom SCHOOL OF ENVIRONMENTAL SCIENCES UNIVERSITY OF LIVERPOOL GBR Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) 2018-12 https://hal.science/hal-02960682 https://hal.science/hal-02960682/document https://hal.science/hal-02960682/file/s41598-018-19472-1.pdf https://doi.org/10.1038/s41598-018-19472-1 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-19472-1 hal-02960682 https://hal.science/hal-02960682 https://hal.science/hal-02960682/document https://hal.science/hal-02960682/file/s41598-018-19472-1.pdf doi:10.1038/s41598-018-19472-1 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.science/hal-02960682 Scientific Reports, 2018, 8 (1), ⟨10.1038/s41598-018-19472-1⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2018 ftinsu https://doi.org/10.1038/s41598-018-19472-1 2023-06-05T22:40:30Z International audience Iron (Fe) is an essential micronutrient for marine microbial organisms, and low supply controls productivity in large parts of the world's ocean. The high latitude North Atlantic is seasonally Fe limited, but Fe distributions and source strengths are poorly constrained. Surface ocean dissolved Fe (DFe) concentrations were low in the study region (<0.1 nM) in summer 2010, with significant perturbations during spring 2010 in the Iceland Basin as a result of an eruption of the Eyjafjallajökull volcano (up to 2.5 nM DFe near Iceland) with biogeochemical consequences. Deep water concentrations in the vicinity of the Reykjanes Ridge system were influenced by pronounced sediment resuspension, with indications for additional inputs by hydrothermal vents, with subsequent lateral transport of Fe and manganese plumes of up to 250-300 km. Particulate Fe formed the dominant pool, as evidenced by 4-17 fold higher total dissolvable Fe compared with DFe concentrations, and a dynamic exchange between the fractions appeared to buffer deep water DFe. Here we show that Fe supply associated with deep winter mixing (up to 103 nmol m −2 d −1) was at least ca. 4-10 times higher than atmospheric deposition, diffusive fluxes at the base of the summer mixed layer, and horizontal surface ocean fluxes. Article in Journal/Newspaper Eyjafjallajökull Iceland North Atlantic Institut national des sciences de l'Univers: HAL-INSU Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Scientific Reports 8 1 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Achterberg, Eric Steigenberger, Sebastian Marsay, Chris Le Moigne, Frédéric A.C. Painter, Stuart Baker, Alex Connelly, Douglas Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste Iron Biogeochemistry in the High Latitude North Atlantic Ocean |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Iron (Fe) is an essential micronutrient for marine microbial organisms, and low supply controls productivity in large parts of the world's ocean. The high latitude North Atlantic is seasonally Fe limited, but Fe distributions and source strengths are poorly constrained. Surface ocean dissolved Fe (DFe) concentrations were low in the study region (<0.1 nM) in summer 2010, with significant perturbations during spring 2010 in the Iceland Basin as a result of an eruption of the Eyjafjallajökull volcano (up to 2.5 nM DFe near Iceland) with biogeochemical consequences. Deep water concentrations in the vicinity of the Reykjanes Ridge system were influenced by pronounced sediment resuspension, with indications for additional inputs by hydrothermal vents, with subsequent lateral transport of Fe and manganese plumes of up to 250-300 km. Particulate Fe formed the dominant pool, as evidenced by 4-17 fold higher total dissolvable Fe compared with DFe concentrations, and a dynamic exchange between the fractions appeared to buffer deep water DFe. Here we show that Fe supply associated with deep winter mixing (up to 103 nmol m −2 d −1) was at least ca. 4-10 times higher than atmospheric deposition, diffusive fluxes at the base of the summer mixed layer, and horizontal surface ocean fluxes. |
author2 |
National Oceanography Centre Southampton (NOC) University of Southampton Helmholtz Centre for Ocean Research Kiel (GEOMAR) Skidaway Institute of Oceanography Institute of Oceanography Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, United Kingdom SCHOOL OF ENVIRONMENTAL SCIENCES UNIVERSITY OF LIVERPOOL GBR Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
format |
Article in Journal/Newspaper |
author |
Achterberg, Eric Steigenberger, Sebastian Marsay, Chris Le Moigne, Frédéric A.C. Painter, Stuart Baker, Alex Connelly, Douglas Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste |
author_facet |
Achterberg, Eric Steigenberger, Sebastian Marsay, Chris Le Moigne, Frédéric A.C. Painter, Stuart Baker, Alex Connelly, Douglas Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste |
author_sort |
Achterberg, Eric |
title |
Iron Biogeochemistry in the High Latitude North Atlantic Ocean |
title_short |
Iron Biogeochemistry in the High Latitude North Atlantic Ocean |
title_full |
Iron Biogeochemistry in the High Latitude North Atlantic Ocean |
title_fullStr |
Iron Biogeochemistry in the High Latitude North Atlantic Ocean |
title_full_unstemmed |
Iron Biogeochemistry in the High Latitude North Atlantic Ocean |
title_sort |
iron biogeochemistry in the high latitude north atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02960682 https://hal.science/hal-02960682/document https://hal.science/hal-02960682/file/s41598-018-19472-1.pdf https://doi.org/10.1038/s41598-018-19472-1 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Reykjanes |
geographic_facet |
Reykjanes |
genre |
Eyjafjallajökull Iceland North Atlantic |
genre_facet |
Eyjafjallajökull Iceland North Atlantic |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.science/hal-02960682 Scientific Reports, 2018, 8 (1), ⟨10.1038/s41598-018-19472-1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-19472-1 hal-02960682 https://hal.science/hal-02960682 https://hal.science/hal-02960682/document https://hal.science/hal-02960682/file/s41598-018-19472-1.pdf doi:10.1038/s41598-018-19472-1 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41598-018-19472-1 |
container_title |
Scientific Reports |
container_volume |
8 |
container_issue |
1 |
_version_ |
1769005694283939840 |