Articles | Volume 14, issue 5
Biogeosciences, 14, 1123–1152, 2017
https://doi.org/10.5194/bg-14-1123-2017

Special issue: Progress in quantifying ocean biogeochemistry – in honour...

Biogeosciences, 14, 1123–1152, 2017
https://doi.org/10.5194/bg-14-1123-2017
Research article
 | Highlight paper
09 Mar 2017
Research article  | Highlight paper | 09 Mar 2017

Manganese in the west Atlantic Ocean in the context of the first global ocean circulation model of manganese

Marco van Hulten et al.

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Cited articles

Aguilar-Islas, A. and Bruland, K.: Dissolved manganese and silicic acid in the Columbia River plume, Mar. Chem., 101, 233–247, https://doi.org/10.1016/j.marchem.2006.03.005, 2006.
Aumont, O. and Bopp, L.: Globalizing results from ocean in situ iron fertilization studies, Global Biogeochem. Cy., 20, GB2017, https://doi.org/10.1029/2005GB002591, 2006.
Aumont, O., Ethé, C., Tagliabue, A., Bopp, L., and Gehlen, M.: PISCES-v2: an ocean biogeochemical model for carbon and ecosystem studies, Geosci. Model Dev., 8, 2465–2513, https://doi.org/10.5194/gmd-8-2465-2015, 2015.
Baker, A., Jickells, T., Witt, M., and Linge, K.: Trends in the solubility of iron, aluminium, manganese and phosphorus in aerosol collected over the Atlantic Ocean, Mar. Chem., 98, 43–58, https://doi.org/10.1016/j.marchem.2005.06.004, 2006.
Baker, A. R., Landing, W. M., Bucciarelli, E., Cheize, M., Fietz, S., Hayes, C. T., Kadko, D., Morton, P. L., Rogan, N., Sarthou, G., Shelley, R. U., Shi, Z., Shiller, A., and van Hulten, M. M. P.: Trace element and isotope deposition across the air–sea interface: progress and research needs, Phil. Trans. R. Soc. A: Mathematical, Phys. Eng. Sci., 374, 2081, https://doi.org/10.1098/rsta.2016.0190, 2016.
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Short summary
We ran a global ocean model to understand manganese (Mn), a biologically essential element. Our model shows that (i) in the deep ocean, dissolved [Mn] is mostly homogeneous ~0.10—0.15 nM. The model reproduces this with a threshold on MnO2 of 25 pM, suggesting a minimal particle concentration is needed before aggregation and removal become efficient. (ii) The observed distinct hydrothermal signals are produced by assuming both a strong source and a strong removal of Mn near hydrothermal vents.
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