Over the Sargasso Sea, polluted air coming from North America is richer in biologically available iron than dusty air from the Sahara, which has potential implications for ocean productivity.
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References
Sedwick, P. N., Sholkovitz, E. R. & Church, T. M. Impact of anthropogenic combustion emissions on the fractional solubility of aerosol iron: Evidence from the Sargasso Sea. Geochem. Geophys. Geosyst. 8, Q10Q06 (2007).
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Langenberg, H. Iron input. Nature Geosci (2007). https://doi.org/10.1038/ngeo.2007.32
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DOI: https://doi.org/10.1038/ngeo.2007.32