Review and Scoping process of the Working Group II contribution to the Sixth Assessment Report


All IPCC reports undergo two stages of review. A First-Order Draft is reviewed by experts. Following the expert review, authors develop a Second-Order Draft based on the comments received. This draft then undergoes a second review by both governments and experts. Authors will prepare a Final Draft based on the comments received during the second review. The Final Draft is distributed to governments at the time of the final government review of the Summary for Policymakers.

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.


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The scoping meeting for the Sixth Assessment Report (AR6) took place in Addis Ababa (Ethiopia) from 1 to 5 May 2017. The draft outlines were approved by the Panel when it met in September 2017

In order to determine robust areas of consideration, participants in the Scoping Meeting needed to have a broad understanding of climate change and related issues, and collectively had expertise in the following areas:

Working Group II

  • Co-benefits, risks and co-costs of mitigation and adaptation, including interactions and trade-offs, technological and financial challenges and options.
  • Ethics and equity: climate change, sustainable development, gender, poverty eradication, livelihoods, and food security.
  • Perception of risks and benefits of climate change, adaptation and mitigation options, and societal responses, including psychological and sociological aspects.
  • Climate engineering, greenhouse gas removal, and associated feedbacks and impacts.
  • Regional and sectorial climate information.
  • Epistemology and different forms of climate related knowledge and data, including indigenous and practice-based knowledge.

Regional expertise

  • Africa
  • Europe
  • Asia
  • Australasia
  • North America
  • Central and South America
  • Polar regions
  • Small islands
  • Ocean


On 21 September 2016, the IPCC Secretariat sent out a pre-scoping questionnaire to governments and observer organizations to identify policy relevant questions and scientific and technical topics to be addressed in the Sixth Assessment Report (deadline: 30 November 2016, extended to 12 December 2016). The responses received were synthesized and made available to the participants of the AR6 Scoping Meeting and the Panel.

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