The Fifth Assessment Report (AR5) provides a clear and up to date view of the current state of scientific knowledge relevant to climate change. It consists of three Working Group (WG) reports and a Synthesis Report (SYR) which integrates and synthesizes material in the WG reports for policymakers. The SYR will be finalized on 31 October 2014. Further information about the outline and content and how the AR5 has been prepared can be found in the AR5 reference document and
SYR Scoping document, AR5 page and on the websites of the working groups.
The Working Group III contribution assesses the options for mitigating climate change and their
underlying technological, economic and institutional requirements. It transparently lays out risks, uncertainty and ethical
foundations of climate change mitigation policies on the global, national and sub-national level, investigates mitigation measures for
all major sectors and assesses investment and finance issues.
Climate Change 2014: Impacts, Adaptation and Vulnerability
The Working Group II contribution considers the vulnerability and exposure of human and natural
systems, the observed impacts and future risks of climate change, and the potential for and limits to adaptation. The chapters
of the report assess risks and opportunities for societies, economies, and ecosystems around the world.
The Working Group I contribution provides a comprehensive assessment of the
physical science basis of climate change. The report includes a detailed assessment
of climate change observations throughout the climate system; dedicated chapters on
sea level change, biogeochemical cycles, clouds and aerosols, and regional climate
phenomena; extensive information from models, including near-term and long-term
climate projections; and a new comprehensive atlas of global and regional climate
projections for 35 regions of the world.