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Dissolved iron in the North Atlantic Ocean and Labrador Sea along the GEOVIDE section (GEOTRACES section GA01)

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Tonnard, Manon
dc.contributor.author Planquette, Hélène
dc.contributor.author Bowie, Andrew R.
dc.contributor.author van der Merwe, Pier
dc.contributor.author Gallinari, Morgane
dc.contributor.author Desprez de Gésincourt, Floriane
dc.contributor.author Germain, Yoan
dc.contributor.author Gourain, Arthur
dc.contributor.author Benetti, Marion
dc.contributor.author Reverdin, Gilles
dc.contributor.author Tréguer, Paul
dc.contributor.author Boutorh, Julia
dc.contributor.author Cheize, Marie
dc.contributor.author Lacan, François
dc.contributor.author Menzel Barraqueta, Jan-Lukas
dc.contributor.author Pereira-Contreira, Leonardo
dc.contributor.author Shelley, Rachel
dc.contributor.author Lherminier, Pascale
dc.contributor.author Sarthou, Géraldine
dc.date.accessioned 2021-01-26T14:15:19Z
dc.date.available 2021-01-26T14:15:19Z
dc.date.issued 2020-02-21
dc.identifier.citation Tonnard, M., Planquette, H., Bowie, A. R., van der Merwe, P., Gallinari, M., Desprez de Gésincourt, F., Germain, Y., Gourain, A., Benetti, M., Reverdin, G., Tréguer, P., Boutorh, J., Cheize, M., Lacan, F., Menzel Barraqueta, J.-L., Pereira-Contreira, L., Shelley, R., Lherminier, P., and Sarthou, G.: Dissolved iron in the North Atlantic Ocean and Labrador Sea along the GEOVIDE section (GEOTRACES section GA01), Biogeosciences, 17, 917–943, https://doi.org/10.5194/bg-17-917-2020, 2020.
dc.identifier.issn 1726-4189
dc.identifier.uri https://hdl.handle.net/20.500.11815/2413
dc.description Publisher's version (útgefin grein)
dc.description.abstract Dissolved Fe (DFe) samples from the GEOVIDE voyage (GEOTRACES GA01, May-June 2014) in the North Atlantic Ocean were analyzed using a seaFAST-pico™ coupled to an Element XR sector field inductively coupled plasma mass spectrometer (SF-ICP-MS) and provided interesting insights into the Fe sources in this area. Overall, DFe concentrations ranged from 0:09 ± 0:01 to 7:8 ± 0:5 nmol L-1. Elevated DFe concentrations were observed above the Iberian, Greenland, and Newfoundland margins likely due to riverine inputs from the Tagus River, meteoric water inputs, and sedimentary inputs. Deep winter convection occurring the previous winter provided iron-to-nitrate ratios sufficient to sustain phytoplankton growth and lead to relatively elevated DFe concentrations within subsurface waters of the Irminger Sea. Increasing DFe concentrations along the flow path of the Labrador Sea Water were attributed to sedimentary inputs from the Newfoundland Margin. Bottom waters from the Irminger Sea displayed high DFe concentrations likely due to the dissolution of Fe-rich particles in the Denmark Strait Overflow Water and the Polar Intermediate Water. Finally, the nepheloid layers located in the different basins and at the Iberian Margin were found to act as either a source or a sink of DFe depending on the nature of particles, with organic particles likely releasing DFe and Mn particle scavenging DFe.
dc.description.sponsorship This research has been supported by the French National Research Agency ANR GEOVIDE (grant no. ANR-13-BS06-0014), the RPDOC BITMAP (grant no. ANR-12-PDOC-0025-01), the French National Center for Scientific Research (grant no. CNRS-LEFE-CYBER), the LabexMER (grant no. ANR-10-LABX-19), and Ifremer (Institut français de recherche pour l'exploitation de la mer).
dc.format.extent 917-943
dc.language.iso en
dc.publisher Copernicus GmbH
dc.relation.ispartofseries Biogeosciences;17(4)
dc.rights info:eu-repo/semantics/openAccess
dc.subject GEOVIDE voyage
dc.subject North Atlantic Ocean
dc.subject Norður-Atlantshaf
dc.title Dissolved iron in the North Atlantic Ocean and Labrador Sea along the GEOVIDE section (GEOTRACES section GA01)
dc.type info:eu-repo/semantics/article
dcterms.license This work is distributed under the Creative Commons Attribution 4.0 License.
dc.description.version Peer Reviewed
dc.identifier.journal Biogeosciences
dc.identifier.doi 10.5194/bg-17-917-2020
dc.relation.url https://bg.copernicus.org/articles/17/917/2020/bg-17-917-2020.pdf
dc.contributor.department Jarðvísindastofnun (HÍ)
dc.contributor.department Institute of Earth Sciences (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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