PRESS RELEASE Back to Media Center
Download pdf: En

17 August 2017
Authors for Special Report on the Ocean and Cryosphere in a Changing Climate selected

GENEVA, August 17 – The Intergovernmental Panel on Climate Change (IPCC) has invited 101 experts from 41 countries to begin work on the Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC) as Coordinating Lead Authors, Lead Authors and Review Editors. The Special Report outline was agreed in March 2017and the report is scheduled to be finalized in September 2019.
The IPCC received a total of 569 nominations from 57member countries. The selection process for Coordinating Lead Authors, Lead Authors and Review Editors was conducted by members of the IPCC Working Group I and II Bureaus and led by the Co-Chairs.
"This Special Report is unique in IPCC history and reflects the increasing awareness of how important and at the same time how fragile the ocean is as a life-sustaining unit of our planet," said Hans Pörtner, Co-Chair, IPCC Working Group II. "The ocean offers many services to ecosystems and humankind, from climate regulation to food supply. At the same time, ocean-cryosphere-atmosphere interactions will shape sea-level rise as a major challenge to human civilization." Working Group II assesses climate change impacts, adaptation and vulnerability.
Debra Roberts, Working Group II Co-Chair added: "As an IPCC Special Report focused on two Earth systems which together cover the majority of the planet’s surface and which affect the majority of the global population, a diverse and skilled author team is critical in ensuring a report of the highest policy relevance."
"The IPCC looks forward to working with experts from around the world on this important topic that impacts billions of people, from the high mountains and polar regions to the coasts," said IPCC Vice-Chair Ko Barrett, who chaired the scientific steering committee for the scoping meeting that drafted the outline of the Special Report.
Of the selected experts, 86 are Coordinating Lead Authors and Lead Authors who have the collective responsibility for the contents their assigned chapters in the report. 15 of the experts are Review Editors who will ensure that all substantive comments during the review stages are given appropriate consideration by the Authors. 36% of the selected experts come from developing countries and countries with economies in transition, and 64% are from developed countries. 74% of the selected are new to the the IPCC process. 31% of them are women and 69% men.
The full list of Coordinating Lead Authors, Lead Authors and Review Editors is here:

For more information, contact:
IPCC Press Office, Email:, Nina Peeva, +41 22 730 8142
IPCC Working Group II TSU, Email:
Follow IPCC on  Facebook @ipcc, Twitter @ipcc_ch, Instagram @ipcc and LinkedIn @ipcc.

Notes for editors

What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the United Nations body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UN Environment) and the World Meteorological Organization (WMO) in 1988 to provide policymakers with regular scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. It has 195 member states.
IPCC assessments provide governments, at all levels, with scientific information that they can use to develop climate policies. IPCC assessments are a key input into the international negotiations to tackle climate change. IPCC reports are drafted and reviewed in several stages, thus guaranteeing objectivity and transparency.
The IPCC assesses the thousands of scientific papers published each year to tell policymakers what we know and don’t know about the risks related to climate change. The IPCC identifies where there is agreement in the scientific community, where there are differences of opinion, and where further research is needed. It does not conduct its own research.
To produce its reports, the IPCC mobilizes hundreds of scientists. These scientists and officials are drawn from diverse backgrounds. Only a dozen permanent staff work in the IPCC’s Secretariat.
The IPCC has three working groups: Working Group I, dealing with the physical science basis of climate change; Working Group II, dealing with impacts, adaptation and vulnerability; and Working Group III, dealing with the mitigation of climate change. It also has a Task Force on National Greenhouse Gas Inventories that develops methodologies for measuring emissions and removals.
IPCC Assessment Reports consist of contributions from each of the three working groups and a Synthesis Report. Special Reports undertake an assessment of cross-disciplinary issues that span more than one working group and are shorter and more focused than the main assessments.

Sixth Assessment Cycle
At its 41st Session in February 2015, the IPCC decided to produce a Sixth Assessment Report (AR6). At its 42nd Session in October 2015 it elected a new Bureau that would oversee the work on this report and Special Reports to be produced in the assessment cycle. At its 43rd Session in April 2016, it decided to produce three Special Reports, a Methodology Report and AR6.
The first of these special reports, to be finalized in September 2018, is 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 Methodology Report, entitled 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories, will be delivered in May 2019.
The Special Report on the Ocean and Cryosphere in a Changing Climate will be delivered in September 2019. It is being prepared under the joint scientific leadership of IPCC Working Groups I and II, with support from the Working Group II Technical Support Unit.
In September 2019 the IPCC will also finalize Climate Change and Land: an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems.
The IPCC will approve the outlines of AR6 in September 2017. The three working contributions will be released in 2021 and the Synthesis Report in April 2022.