Moras et al. (2026): Impacts of water advection and CO₂ exchanges on the carbon dioxide removal potential of ocean alkalinity enhancement
Charly A. Moras, Matias Saez Moreno, Peggy Bartsch, and Jens Hartmann, IN: EGUsphere, https://doi.org/10.5194/egusphere-2025-6144
Ocean alkalinity enhancement is a carbon dioxide removal strategy with high CO₂ uptake potential and rather low cost. Long term modelling studies have focused on this strategy, but most laboratory experiments focus on shorter term with strong advection, which may not be representative of natural systems. Hence, the long-term fate of alkalinity is yet to be addressed. Also, the role of CO₂ ingassing is still largely overlooked. In a new setup, 6-month experiments using solid Ca(OH)₂ and Mg(OH)₂, and liquid NaOH have been conducted with a constant supply of CO₂.