The Sixth Assessment Report consists of contributions from each of the three IPCC Working Groups and a Synthesis Report (SYR), which integrates the Working Group contributions and the Special Reports produced in the cycle. The meeting to draft the outline of the Sixth Assessment Report took place in Addis Ababa (Ethiopia) in May 2017. The draft outlines were approved by the 46th Session of the Panel in September 2017. More information on the sixth assessment cycle is available here.

The First-Order Draft of the Working Group II contribution to AR6 underwent an expert review  from 18 October to 13 December 2019. The Second-Order Draft was reviewed by experts and governments from 4 December 2020 to 29 January 2021. The Final Government Distribution of the final draft of the report and Government Review of the Summary for Policymakers took place from 1 October to 26 November 2021.

The Working Group II contribution was considered during the 55th Session of the IPCC and the 12th Session of the Working Group II from 14 to 27 February 2022. The Summary for Policymakers was released during a press conference on 28 February 2022.

Recording of the press conference

• Video message by António Guterres, Secretary-General of the United Nations (Text file)
• Remarks by Hoesung Lee, IPCC Chair (~2′)
• Remarks by Petteri Taalas, WMO Secretary-General  (~2′)
• Remarks by Inger Andersen, Executive Director of UN Environment Programme (~2′)
• Presentation of the approved Summary for Policymakers  by IPCC Working Group II Co-Chairs Debra Roberts and Hans Otto-Pörtner. (~20′)

The full list of Authors and Review Editors for the Working Group I contribution by chapter is available here

• Press release: Selection of Authors for IPCC Sixth Assessment Report
• Leaflet: Nomination of Authors for AR6

Lead Author Meetings

• First Lead Author Meeting: Durban, South Africa, 20 – 25 January 2019, 1 – 5 April 2019
• Second Lead Author Meeting: Kathmandu, Nepal, 15 – 19 July 2019
• Third Lead Author Meeting: Faro, Portugal, 26 January – 1 February 2020
• Fourth Lead Author Meeting: Virtual, 1 – 12 March 2021

Information on the review process and the scoping process that preceded it is available here.