Articles | Volume 13, issue 20
Biogeosciences, 13, 5697–5717, 2016
https://doi.org/10.5194/bg-13-5697-2016
Biogeosciences, 13, 5697–5717, 2016
https://doi.org/10.5194/bg-13-5697-2016

Research article 17 Oct 2016

Research article | 17 Oct 2016

A dissolved cobalt plume in the oxygen minimum zone of the eastern tropical South Pacific

Nicholas J. Hawco et al.

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Short summary
Cobalt is a scarce nutrient required by phytoplankton. We report more than 800 measurements of dissolved cobalt in the South Pacific Ocean, which show high cobalt concentrations in anoxic subsurface waters offshore of Peru. Coastal cobalt sources may be stronger under low oxygen and could fluctuate as climate change is expected to alter the extent of these low-oxygen regions.
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