The dominant sink of oceanic calcium carbonate occurs in undersaturated seawater

Proceedings of the National Academy of Sciences, Volume 122, Number 43, October 2025.
ImportanceTo predict the role of the oceans in the absorption of anthropogenic CO2 in the future, it is important to quantify the current balance of calcium carbonate (CaCO3) in the oceans. Our study provides an estimate of the dissolution rate of CaCO3 in the global oceans…