There is no doubt any more: In order to mitigate global warming, the
emission of greenhouse gases must be reduced, the sooner the better.
This will then lead to a stabilization of the greenhouse gas
concentration in the atmosphere – and in the very long term hopefully
to a decrease of its concentration.The level at which the greenhouse gas concentration gets stabilized does determine the warming effect, i.e. the temperature increase.
following graph shows the relation between the greenhouse gas
concentration (expressed as CO2-equivalents) and the resulting average
global temperature increase on the surface.