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Volume 10, issue 5
The Cryosphere, 10, 2173–2189, 2016
https://doi.org/10.5194/tc-10-2173-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
The Cryosphere, 10, 2173–2189, 2016
https://doi.org/10.5194/tc-10-2173-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 21 Sep 2016

Research article | 21 Sep 2016

Estimates of ikaite export from sea ice to the underlying seawater in a sea ice–seawater mesocosm

Nicolas-Xavier Geilfus et al.

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Chierici, M. and Fransson, A.: Calcium carbonate saturation in the surface water of the Arctic Ocean: undersaturation in freshwater influenced shelves, Biogeosciences, 6, 2421–2431, https://doi.org/10.5194/bg-6-2421-2009, 2009.
Chierici, M., Fransson, A., Lansard, B., Miller, L. A., Mucci, A., Shadwick, E., Thomas, E., Tremblay, J. E., and Papakyriakou, T.: The impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean, J. Geophys. Res., 116, C00G09, https://doi.org/10.1029/2011JC007184, 2011.
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The fate of ikaite precipitation within sea ice is poorly understood. In this study, we estimated ikaite precipitation of up to 167 µmol kg-1 within sea ice, while its export and dissolution into the underlying seawater was responsible for a TA increase of 64–66 μmol kg-1. We estimated that more than half of the total ikaite precipitated was still contained in the ice when sea ice began to melt. The dissolution of the ikaite crystals in the water column kept the seawater pCO2 undersaturated.
The fate of ikaite precipitation within sea ice is poorly understood. In this study, we...
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