Each IPCC Assessment Report is composed of contributions by the three IPCC Working Groups and a Synthesis Report. Contributions to the IPCC Sixth Assessment Report (AR6) will be published over 2021 - 2023.
Working Group I Report
- Full Report, Summary for Policymakers, Interactive Atlas, and Regional Factsheets
The Working Group I contribution to the Sixth Assessment Report addresses the most up-to-date physical understanding of the climate system and climate change, bringing together the latest advances in climate science, and combining multiple lines of evidence from paleoclimate, observations, process understanding, and global and regional climate simulations.
Working Group II Report
The Working Group II assesses the impacts of climate change, from a world-wide to a regional view of ecosystems and biodiversity, and of humans and their diverse societies, cultures and settlements. It considers their vulnerabilities and the capacities and limits of these natural and human systems to adapt to climate change and thereby reduce climate-associated risks together with options for creating a sustainable future for all through an equitable and integrated approach to mitigation and adaptation efforts at all scales.
Working Group III Report
The Working Group III assesses all aspects of mitigation including technical feasibility, cost and the enabling environments that would allow measures to be taken up. Enabling environments cover policy instruments, governance options and social acceptability. Synergies and trade-offs with adaptation measures are of increasing interest as are co-benefits, risks and links to sustainable development. WG III takes both a near-term perspective relevant to decision-makers in government and the private sector and a long-term perspective that helps identify how high-level climate policy goals might be met.
Synthesis Report of AR6
The Synthesis Report (SYR) will synthesise and integrate materials contained within the Assessment Reports and Special Reports. It will be written in a non-technical style suitable for policymakers and address a broad range of policy-relevant but policy-neutral questions approved by the Panel. It is composed of two parts, a Summary for Policymakers (SPM) of 5 to 10 pages and a Longer Report of 30 to 50 pages.
Approval and distribution of the AR6 Synthesis Report is expected in early 2023.