Page "United Nations Framework Convention on Climate Change" Paragraph 89

In order to stabilize the concentration of GHGs in the atmosphere, emissions would need to peak and decline thereafter.

The lower the stabilization level, the more quickly this peak and decline would need to occur.

The emissions associated with atmospheric stabilization varies among different GHGs.

This is because of differences in the processes that remove each gas from the atmosphere.

Concentrations of some GHGs decrease almost immediately in response to emission reduction, e. g., methane, while others continue to increase for centuries even with reduced emissions, e. g., carbon dioxide.