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

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dc.contributor.authorTonnard, Manonen_ZA
dc.contributor.authorPlanquette, Hélèneen_ZA
dc.contributor.authorBowie, Andrew Rossen_ZA
dc.date.accessioned2022-04-11T13:51:12Z
dc.date.available2022-04-11T13:51:12Z
dc.date.issued2020-02-21
dc.description.abstractDissolved Fe (DFe) samples from the GEOVIDE voyage (GEOTRACES GA01, May–June 2014) in the North Atlantic Ocean were analysed using a SeaFAST-picoTM coupled to an Element XR HR-ICP-MS and provided interesting insights on the Fe sources in this area. Overall, DFe concentrations ranged from 0.09 ± 0.01 nmol L−1 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. Air-sea interactions were suspected to be responsible for the increase in DFe concentrations within subsurface waters of the Irminger Sea due to deep convection occurring the previous winter, that provided iron-to-nitrate ratios sufficient to sustain phytoplankton growth. 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 from the Denmark Strait Overflow Water and the Polar Intermediate Water. Finally, the nepheloid layers were found to act as either a source or a sink of DFe depending on the nature of particles.en_ZA
dc.identifier.otherDOI:10.5194/bg-17-917-2020
dc.identifier.urihttp://hdl.handle.net/10019.1/124442
dc.language.isoen_ZAen_ZA
dc.rights.holderAuthors retain copyright
dc.subjectironen_ZA
dc.subjectNorth Atlantic Oceanen_ZA
dc.subjectLabrador Seaen_ZA
dc.subjectGEOVIDEen_ZA
dc.titleDissolved iron in the North Atlantic Ocean and Labrador Sea along the GEOVIDE section (GEOTRACES section GA01)en_ZA
dc.typeArticleen_ZA
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