The Intergovernmental Panel on Climate Change today launched the complete version of the Synthesis Report, the concluding installment of the Fifth Assessment Report.

Written by over 800 scientists from 80 countries, and assessing over 30,000 scientific papers, the Fifth Assessment Report tells policymakers what the scientific community knows about the scientific basis of climate change, its impacts and future risks, and options for adaptation and mitigation.

The key findings of the Synthesis Report, initially released on 2 November 2014, are:

  • Human influence on the climate system is clear;
  •  The more we disrupt our climate, the more we risk severe, pervasive and irreversible impacts ; and
  • We have the means to limit climate change and build a more prosperous, sustainable future.

“The Synthesis Report, distilling the work of hundreds of experts, is an invaluable tool and resource for policymakers as the world prepares to finalize a global agreement on climate change later this year,” said Ismail El Gizouli, Acting Chair of the IPCC.

Today’s release includes the fully laid-out Summary for Policymakers of the Synthesis Report and the longer report comprised of an Introduction and four topics, plus six annexes.
The IPCC is also releasing on the website drafts of the Synthesis Report, and comments arising from the expert and government review.

As its name suggests the Synthesis Report integrates and synthesizes the contributions by the IPCC’s three working groups that were rolled out over 2013 and 2014 into a concise document of about 110 pages suitable for policymakers and other stakeholders.

The Synthesis Report and supporting materials can be found at

The Intergovernmental Panel on Climate Change  is the world body for assessing the science related to climate change. The IPCC was set up in 1988 by the World Meteorological Organization and United Nations Environment Programme, endorsed by the United Nations General Assembly, to provide policymakers with regular assessments of the scientific basis of climate change, its impacts and future risks, and options for adaptation and mitigation.

The IPCC does not do its own research, conduct climate measurements or produce its own climate models; it assesses the thousands of scientific papers published each year to tell policymakers what we know and don’t know about the risks related to climate change, and identifies where there is agreement in the scientific community, where there are differences, and where further research is needed.