Any processes, activities or mechanisms, including biomass, and especially forests and oceans, which have the property of removing a greenhouse gas, aerosols or precursors of greenhouse gases from the atmosphere.
Entry into force
Entry into force
Intergovernmental agreements, including protocols and amendments, are not legally valid until ratified by a certain number of countries. For the UNFCCC creation, it took 50 countries; as for ratifying the Kyoto Protocol, at least 55 countries were required...