Translations:Climate change mitigation/77/en

These options focus on the carbon which ocean reservoirs can store. They include ocean fertilization, ocean alkalinity enhancement or enhanced weathering.The IPCC found in 2022 ocean-based mitigation options currently have only limited deployment potential. But it assessed that their future mitigation potential is large. It found that in total, ocean-based methods could remove 1–100 Gt of CO
2 per year. Their costs are in the order of US$40–500 per tonne of CO
2. Most of these options could also help to reduce ocean acidification. This is the drop in pH value caused by increased atmospheric CO₂ concentrations.