Science

Boosting seawater alkalinity could help communities tackle local carbon emissions, researchers argue

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 07/10/2026, 19:10:23 UTC.

Briefings

Researchers propose using geoengineering to boost seawater alkalinity as a method to sequester atmospheric CO2. While early models predicted annual removals of gigatonnes of carbon, current understanding indicates significantly lower and more complex outcomes. The evidence suggests that while the concept is promising, the actual capacity for carbon storage remains far from the initial optimistic projections.

Key points

• Scientists identified that increasing ocean alkalinity enhances the ocean's ability to absorb and store CO2, initially leading to predictions of removing gigatonnes of carbon annually.

Context and limitations

The initial vision of removing gigatonnes of CO2 annually is not supported by the evidence provided; the actual capacity for carbon storage remains far from these optimistic projections.

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