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IPCC Approves Third Contribution to its Fifth Assessment

ipcc-3913 April 2014: The Intergovernmental Panel on Climate Change (IPCC) approved the Summary for Policymakers (SPM) of its third contribution to the IPCC Fifth Assessment Report (AR5) on mitigation of climate change. Human-generated emissions of greenhouse gases (GHG) are continuing to rise to unprecedented levels, according to the report, which underscores the inadequacy of existing levels of effort to curb emissions.

The 12th Session of the IPCC Working Group III (WGIII-12) and 29th Session of the IPCC took place from 7-12 April 2014, in Berlin, Germany. WGIII convened to approve the WGIII SPM line-by-line and to accept the underlying assessment of scientific literature. The WGIII report outlines technological and behavioral changes that can limit the increase in global average temperatures to less than two degrees Celsius, the point at which science shows that climate impacts begin to overwhelm human coping efforts. The report further notes that only major institutional and technological change will result in a better than even chance that global warming will not exceed this threshold.

After adopting the report, IPCC-39 then convened to discuss, inter alia, future work of the IPCC, admission of observer organizations, and conflict of interest.

The report, titled 'Climate Change 2014: Mitigation of Climate Change,' is the IPCC's Working Group III report. The Panel adopted its WGI contribution on the physical science basis of climate change in in September 2013 in Stockholm, Sweden. The Panel adopted the WGII contribution on climate change impacts, adaptation and vulnerability in March 2014, in Yokohama, Japan. A Synthesis Report of all three WG volumes is expected to be finalized by the IPCC at a meeting that will take place in October 2014, in Copenhagen, Denmark. [UNFCCC Press Release] [IPCC Press Release] [IISD RS Coverage] [UNEP Press Release] [UN Press Release] [WMO Press Release]