Expert and Government Review of the Second Order Draft of the IPCC Special Report on Global Warming of 1.5ºC

Deadline: 18 February 2018

The IPCC second order draft (SOD) of the IPCC Special Report on Global Warming of 1.5ºC is open for government and expert review until 25 February 2018, with registration closing on 18 February 2018. The IAI Directorate invites experts from Parties and scientists involved in its Research Programs to disseminate this call and participate in the review by using the following link:

During the IAI’s Twenty-fourth Conference of the Parties (CoP), held in Santiago, Chile from 14 to 17 June 2016, Argentina proposed that Parties engage on national and regional questions such as the 1.5-degree limit proposed by the UN Climate Change Convention and to encourage questions by stakeholders.

The expert review process aims to involve as many independent experts as possible, seeking a range of views, expertise, and geographical representation. Being an expert reviewer would provide the opportunity for you to comment on the accuracy and completeness of the scientific/technical/socio-economic balance and content according to your own knowledge and experience and in the context of regional challenges.

The government and expert review of the draft report is a key element of the IPCC assessment process. Experts and government representatives from around the world will offer comments and suggestions to the author teams working on the report Global Warming of 1.5°C: an IPCC special report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.

“The review process is essential for the quality of IPCC assessment reports. The first round of reviews was extremely successful, with nearly 13,000 comments from almost 500 expert reviewers in over 60 countries,” said Valérie Masson-Delmotte, Co-Chair of IPCC Working Group I. “The authors have carefully considered these comments, as well as any new scientific literature, and prepared a second draft. Registering as a reviewer is an opportunity for experts, including early career scientists, to join this collective effort and help to strengthen the assessment even further.”

Review contributions will be acknowledged in the final report, due to be published in October 2018. Guidance on the review process and role of Expert Reviewers can be found here: