The Working Group on Climate Change was established in 2007 to facilitate knowledge sharing and enhance coherence and coordination in the actions of UN system member organizations on climate change.  The WG established the CEB Climate Change Action Framework with 5 focus areas (adaptation; technology transfer; forestry and agriculture; financing, mitigation and adaptation action; and capacity building) and 4 cross-cutting areas (science, assessment, monitoring and early warning; supporting global, regional and national action; public awareness and education; and the social dimensions of climate change).

Each agency contributes to the joint effort on the basis of its area of expertise, intergovernmental mandate and available resources. The overall objective of the CEB Climate Change Action Framework is to maximize existing synergies, eliminate duplication and overlap, and optimize the impact of the collective efforts of the UN system in supporting countries implementing strategies to address climate change.