Articles | Volume 14, issue 11
Biogeosciences, 14, 2715–2739, 2017
https://doi.org/10.5194/bg-14-2715-2017
Biogeosciences, 14, 2715–2739, 2017
https://doi.org/10.5194/bg-14-2715-2017
Research article
02 Jun 2017
Research article | 02 Jun 2017

Coastal sources, sinks and strong organic complexation of dissolved cobalt within the US North Atlantic GEOTRACES transect GA03

Abigail E. Noble et al.

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Cited articles

Ahlgren, N. A., Noble, A., Patton, A. P., Roache-Johnson, K., Jackson, L., Robinson, D., McKay, C., Moore, L. R., Saito, M. A., and Rocap, G.: The unique trace metal and mixed layer conditions of the Costa Rica upwelling dome support a distinct and dense community of Synechococcus, Limnol. Oceanogr, 59, 2166–2184, 2014.
Baars, O. and Croot, P. L.: Dissolved cobalt speciation and reactivity in the eastern tropical North Atlantic, Mar. Chem., 173, 310–319, 2015.
Banza, C. L. N., Nawrot, T. S., Haufroid, V., Decrée, S., De Putter, T., Smolders, E., Kabyla, B. I., Luboya, O. N., Ilunga, A. N., Mutombo, A. M., and Nemery, B.: High human exposure to cobalt and other metals in Katanga, a mining area of the Democratic Republic of Congo, Environ. Res., 109, 745–752, 2009.
Bergquist, B., Wu, J., and Boyle, E.: Variability in oceanic dissolved iron is dominated by the colloidal fraction, Geochim. Cosmochim. Acta, 71, 2960–2974, 2007.
Bonnet, S., Webb, E. A., Panzeca, C., Karl, D. M., Capone, D. G., and Wilhelmy, S. A. S.: Vitamin B12 excretion by cultures of the marine cyanobacteria Crocosphaera and Synechococcus, Limnol. Oceanogr., 55, 1959–1964, 2010.
Short summary
This study examines sources and sinks of dissolved and labile cobalt in the North Atlantic Ocean. The North and South Atlantic are influenced differently by dust, coastal margin sources, biota, and suspended particles. Dissolved cobalt in both basins is driven by a coastal margin source, leading to large plumes emanating from the north and south African coasts. These plumes are comparable in size despite the high dust flux observed in the North Atlantic that is absent in the South Atlantic.
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