Carbon sequestration

Also: Carbon uptake, CO2 sequestration

When carbon dioxide (CO₂) is removed from the atmosphere, it is known as carbon sequestration.

When sequestered, CO₂ may change form, so the usual term is "carbon sequestration" rather than "carbon dioxide sequestration". For example, CO₂ taken up by the ocean contributes to ocean acidification due to the reaction CO_2(aq) + H₂O → H⁺ + HCO₃^-.