Spatial and temporal distribution of Fe(II) and H2O2 during EisenEx, an open ocean mescoscale iron enrichment

Measurements of Fe(II) and H2O2 were carried out in the Atlantic sector of the Southern Ocean during EisenEx, an iron enrichment experiment. Iron was added on three separate occasions, approximately every 8 days, as a ferrous sulfate (FeSO4) solution. Vertical profiles of Fe(II) showed maxima consis...

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Bibliographic Details
Published in:Marine Chemistry
Main Authors: Croot, Peter L., Laan, Patrick, Nishioka, Jun, Strass, Volker, Cisewski, Boris, Boye, Marie, Timmermans, Klaas R., Bellerby, Richard G., Goldson, Laura, Nightingale, Phil, Baar, Hein J.W. de
Format: Article in Journal/Newspaper
Language:English
Published: 2005
Subjects:
EisenEx
Iron enrichment experiment
Fe(II) and H2O2
Southern Ocean
Online Access:https://hdl.handle.net/11370/169ff350-7d40-41b0-8c79-4f543760084a
https://research.rug.nl/en/publications/169ff350-7d40-41b0-8c79-4f543760084a
https://doi.org/10.1016/j.marchem.2004.06.041
https://pure.rug.nl/ws/files/9850822/2005MarChemCroot.pdf
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Summary:Measurements of Fe(II) and H2O2 were carried out in the Atlantic sector of the Southern Ocean during EisenEx, an iron enrichment experiment. Iron was added on three separate occasions, approximately every 8 days, as a ferrous sulfate (FeSO4) solution. Vertical profiles of Fe(II) showed maxima consistent with the plume of the iron infusion. While H2O2 profiles revealed a corresponding minima showing the effect of oxidation of Fe(II) by H2O2, observations showed detectable Fe(II) concentrations existed for up to 8 days after an iron infusion. H2O2 concentrations increased at the depth of the chlorophyll maximum when iron concentrations returned to pre-infusion concentrations (

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