Iron biogeochemistry in the high latitude North Atlantic Ocean
- Achterberg, Eric P.
- Steigenberger, Sebastian
- Marsay, Chris M.
- Le Moigne, Frédéric A.C.
- Painter, Stuart C.
- Baker, Alex R.
- Connelly, Douglas P.
- Moore, C. Mark
- Tagliabue, Alessandro
- Tanhua, Toste
DOIAbstract
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 ...
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