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The Intergovernmental Panel on Climate Change (IPCC) has opened to expert review the first order draft of the Working Group I contribution to the Sixth Assessment Report (AR6). Prospective expert reviewers can self-nominate until 16 June 2019 for this review period closing 23 June 2019.

The IPCC's call can be found on its web page, together with additional guidelines for expert reviewers and the application process. The actual application process is completed by self-nomination through IPCC's online form.

The three working group contributions to AR6 will be released in 2021, and the AR6 Synthesis Report, integrating all the products in this assessment cycle, will be finalized in the first half of 2022. All experts who submit comments on the First Order Draft will be invited to review the Second Order Draft (2 March to 26 April 2020, open to experts and Government representatives).

The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established in 1988 by the United Nations Environment Programme and the World Meteorological Organization (WMO, which is a co-sponsor of WCRP). WCRP has observer status with both IPCC and UNFCCC.