Articles | Volume 10, issue 5
https://doi.org/10.5194/tc-10-2173-2016
https://doi.org/10.5194/tc-10-2173-2016
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, Ryan J. Galley, Brent G. T. Else, Karley Campbell, Tim Papakyriakou, Odile Crabeck, Marcos Lemes, Bruno Delille, and Søren Rysgaard

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Latest update: 28 Mar 2024
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Short summary
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.