Background

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 (AR6) took place in Addis Ababa (Ethiopia) in May 2017. The draft outlines were approved by the 46th Session of the Panel in September 2017.

The First-Order Draft of the Working Group II contribution to AR6 underwent an expert review from 18 October to 13 December 2019. Total number of expert review comments received was 16,348. Read more.

The Second-Order Draft was reviewed by experts and governments from 4 December 2020 to 29 January 2021. Read more. Total number of expert and government review comments received was 40,293.

Between 1 October and 26 November 2021, the Final Draft of the Working Group II contribution was distributed to governments and the Summary for Policymakers submitted for a final government review ahead of the 12th Session of Working Group II and 55th Session of the IPCC. Read more. Total number of government review comments received was 5,777.

Total number of expert and government review comments received was 62,418.

Approved outline of the Working Group II contribution to the Sixth Assessment Report

Timeline for the Working Group II contribution to the Sixth Assessment Report (updated: 31 May 2021)