IPCC 4th Assessment Report world map

Intergovernmental Panel on Climate Change (IPCC)

Fourth Assessment Report: Climate Change 2007

The Intergovernmental Panel on Climate Change (IPCC) was established by WMO and the United Nations Environment Programme to assess scientific, technical and socio-economic information relevant for the understanding of climate change, its potential impacts and options for adaptation and mitigation.

The IPCC has recently finalized its Fourth Assessment Report (AR4) entitled Climate Change 2007. The reports by the three Working Groups provide a comprehensive and up-to-date assessment of the current state of knowledge on climate change. The Synthesis Report, which integrates the information around six topic areas, was issued at the 27th session of the IPCC in Valencia, Spain, on 17 November 2007.


The Physical Science Basis (Working Group I) was released in Paris on 2 February 2007.


Impacts, Adaptation and Vulnerability (Working Group II) was released in Brussels on 5 April 2007.


Mitigation of Climate Change (Working Group III) was released in Bangkok, Thailand, on 4 May 2007.


Synthesis Report





© World Meteorological Organization, 7bis, avenue de la Paix, Case postale No. 2300, CH-1211 Geneva 2, Switzerland - Tel.: +41(0)22 730 81 11 - Fax: +41(0)22 730 81 81 Contact us Copyright | Privacy | Scams | Disclaimer |  Guidelines | Procurement | UN System | Accessibility