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Volume 11, issue 24
Biogeosciences, 11, 7349–7362, 2014
https://doi.org/10.5194/bg-11-7349-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 11, 7349–7362, 2014
https://doi.org/10.5194/bg-11-7349-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Dec 2014

Research article | 19 Dec 2014

Processes determining the marine alkalinity and calcium carbonate saturation state distributions

B. R. Carter et al.

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Cited articles

Almogi-Labin, A., Luz, B., and Duplessy, J.: Quaternary paleo-oceanography, pteropod preservation and stable-isotope record of the Red Sea, Palaeogeogr., Palaeoclimateol., Palaeoecol., 57, 195–211, 1986.
Anderson, L. A. and Sarmiento, J. L.: Redfield ratios of remineralization determined by nutrient data analysis, Global Biogeochem. Cy., 8, 65–80, 1994.
Azetsu-Scott, K., Clarke, A., Falkner, K., Hamilton, J., Jones, E. P., Lee, C., Petrie, B., Prinsenberg, S., Starr, M., and Yeats, P.: Calcium carbonate saturation states in the waters of the Canadian Arctic Archipelago and the Labrador Sea, J. Geophys. Res. Oc., 115, C11, https://doi.org/10.1029/2009JC005917, 2010.
Beldowski, J., Löffler, A., Schneider, B., and Joensuu, L.: Distribution and biogeochemical control of total CO2 and total alkalinity in the Baltic Sea, J. Mar. Sys., 81, 252–259, 2010.
Berelson, W. M., Balch, W. M., Najjar, R., Feely, R. A., Sabine, C., and Lee, K.: Relating estimates of CaCO3 production, export, and dissolution in the water column to measurements of CaCO3 rain into sediment traps and dissolution on the sea floor: A revised global carbonate budget, Global Biogeochem. Cy., 21, GB1024, https://doi.org/10.1029/2006GB002803, 2007.
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We examine and discuss the portion of ocean alkalinity that varies in response to carbonate cycling and riverine alkalinity inputs using a new tracer, Alk*. We use this tracer to quantify the controls on marine carbonate saturation: at depth, we find carbonate cycling to be a minor control relative to organic matter cycling and pressure changes. In well-equilibrated surface water, we find carbonate cycling to be less important than temperature changes and freshwater cycling.
We examine and discuss the portion of ocean alkalinity that varies in response to carbonate...
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