GENEVA, December 5 – The Intergovernmental Panel on Climate Change (IPCC) opened this week registration for experts to serve as Expert Reviewers on the First-Order Draft (FOD) of the 2027 Methodology Report on Inventories for Short-lived Climate Forcers.
This Methodology Report, produced by the Task Force on National Greenhouse Gas Inventories (TFI), will provide guidance on measuring anthropogenic emissions from key short-lived climate-forcing substances, including nitrogen oxides, carbon monoxide, and others, which significantly contribute to global and regional air quality and climate change.
Following the Second Lead Author Meeting held in Istanbul this October, the authors of this Methodology report have prepared a first draft, which will be open for experts worldwide to review and provide comments as of early January 2026.
The review of the First Order Draft is the first of multiple review stages foreseen for every IPCC report. The review process is critical in preparing IPCC reports. It helps ensure scientific rigour, the widest range of perspectives, and relevance and guidance for those who compile emissions inventories.
Scheduled for release in 2027, the Methodology Report on Inventories for Short-lived Climate Forcers will be the first methodology report published by the IPCC in the seventh assessment cycle.
“We have more than 140 authors from 50 countries volunteering their time and expertise to develop the first draft of this long-awaited methodology report. We are now seeking experts worldwide to review and provide their comments, thus ensuring that this methodology report will reflect the latest scientific knowledge,” said Task Force on National Greenhouse Gas Inventories Co-Chair Takeshi Enoki.
Expert Review is the first opportunity for experts to engage with the draft report. All review comments submitted by experts or governments are addressed by the authors. The comments and the author responses, together with the drafts, are published after the report is finalised.
“Engagement of Expert Reviewers is vital. Their insights will help authors to consider diverse perspectives and methodological approaches,” said Task Force on National Greenhouse Gas Inventories Co-Chair Mazhar Hayat.
An online registration process has been developed and is open for prospective expert reviewers via the IPCC web site. Registration will close on 13 February 2026 midnight (GMT +1).
The First Order Draft of the 2027 Methodology Report on Inventories for Short-lived Climate Forcers will be available for Expert Review from 5 January to 27 February 2026.
For more information about the Expert Review of the 2027 Methodology Report on Inventories for Short-lived Climate Forcers, please TFI Technical Support Unit (TSU) at nggip-tsu@iges.or.jp.
More information about IPCC review processes
For more information about IPCC and its processes, please
contact:
IPCC Press Office, Email: ipcc-media@wmo.int
Notes for Editors
What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide political leaders with periodic scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. In the same year the UN General Assembly endorsed the action by the WMO and UNEP in jointly establishing the IPCC. It has 195 member states.
Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, scientists and experts volunteer their time as IPCC authors to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks.
The IPCC has three working groups: Working Group I, assessing the physical science basis of climate change; Working Group II, assessing impacts, adaptation and vulnerability; and Working Group III, assessing 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 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.
About the Seventh Assessment Cycle
Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle, which formally began in July 2023 with the elections of the new IPCC and Task Force Bureaus at the IPCC’s Plenary Session in Nairobi.
At its first Plenary Session in the seventh assessment cycle – the 60th Plenary Session in Istanbul, Türkiye, in January 2024 – the Panel agreed to produce in this cycle the three Working Group contributions to the Seventh Assessment Report (AR7), namely the Working Group I report on the Physical Science Basis, the Working Group II report on Impacts, Adaptation and Vulnerability and the Working Group III report on Mitigation of Climate Change. The Synthesis Report of the Seventh Assessment Report will be produced after the completion of the Working Group reports and released by late 2029.
During its 62nd Plenary Session held in Hangzhou, China, in February 2025, the Panel has agreed on the outlines of the three Working Group contributions to the Seventh Assessment Report (AR7).
At the Panel’s most recent Plenary Session in Lima, Peru, in October 2025, member governments agreed on the scientific content of the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage. There, the Panel also agreed on the 2026 workplan for the three Working Group contributions to the Seventh Assessment Report.
The Panel decided already during the previous cycle to produce a Special Report on Climate Change and Cities and a Methodology Report on Short-lived Climate Forcers during AR7.
At the IPCC’s 61st Plenary Session held in Sofia, Bulgaria, from 27 July to 2 August 2024, the Panel agreed upon the outlines for the Special Report on Climate Change and Cities scheduled for approval and publication in March 2027 and for the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers scheduled for publication in the second half 2027.
In addition, a revision of the 1994 IPCC Technical Guidelines on impacts and adaptation as well as adaptation indicators, metrics and guidelines, will be developed in conjunction with the Working Group II report and published as a separate product.
IPCC’s latest report, the Sixth Assessment Report, was completed in March 2023 with the release of its Synthesis Report, which provided direct scientific input to the First Global Stocktake process under the United Nations Framework Convention on Climate Change at COP28 in Dubai.
For more information visit www.ipcc.ch
1 December 2025
CHECK AGAINST DELIVERY
Madame la Ministre, Monsieur le Maire, distinguished colleagues, ladies and gentlemen,
Thank you for your warm welcome and for your support of the Intergovernmental Panel on Climate Change. As Chair of this UN body mandated with assessing climate science, I am grateful for the excellent organisation and hospitality provided by the French government and the city of Saint-Denis.
Next week marks the tenth anniversary of the Paris Agreement—an extraordinary achievement made possible by global ambition and by France’s diplomatic leadership. With ten years of hindsight, Madame la Ministre, I believe a simple “Chapeau!” expresses our admiration for France´s role in enabling this landmark treaty.
We are nearly 700 participants gathered here this week. Saint-Denis, home to the French national football and rugby union teams at nearby Stade de France, is well prepared for crowds of this size. In the spirit of this place, as we “kick off” our work and your author “teams” move through many “huddles” to “tackle” key scientific questions, perhaps a few more rugby metaphors will find their way into IPCC language.
The Fifth Assessment Report laid the scientific foundations for the Paris Agreement—an example of how IPCC assessment reports underpinned global climate policymaking. It is symbolic that this anniversary coincides with our First Lead Author Meeting for the Seventh Assessment Report. For the first time, authors from all three Working Groups are gathering to launch the Seventh Assessment Report.
It is also my first opportunity to meet all of you—experts from over 100 countries. I congratulate you on your appointments. Selected from several thousand nominations, you bring exceptional expertise across many disciplines. As you look around the room, your presence here clearly reflects our commitment to diversity, gender balance, and greater participation from developing countries and economies in transition.
This meeting is an invaluable opportunity to strengthen interdisciplinarity, to build bridges across Working Groups, and engage deeply with the complex scientific questions ahead. Today marks the moment when our preparations end and assessment of scientific work truly begins.
Let me outline three themes that guide my vision for this assessment cycle: inclusivity and diversity, interdisciplinarity, and policy relevance.
First: Inclusivity and diversity: We have made progress in three areas. Access to literature: Through the Social Responsibility Committee of the International Association of Scientific, Technical and Medical Publishers, developing-country authors now have guaranteed access to leading scientific journals through 2028. We are optimistic about bringing additional publishers on board.
Gender, diversity, and inclusion: In September we held an Expert Meeting led by Vice-Chair Diana Ürge-Vorsatz, resulting in a broad set of recommendations to strengthen equity and inclusivity throughout the IPCC to be considered by the Panel at future sessions. Through the Secretariat we have procured training services on Gener, Diversity, Equity and Inclusivity, which will be launched at this meeting. You will learn more about this training later today.
Since the start of the cycle we have also secured meaningful support for Chapter Scientists from developing countries across all Working Groups.
Second: Interdisciplinarity: Our Working Groups are collaborating more closely than ever, including on the Special Report on Climate Change and Cities and on this week’s meeting. Each IPCC Vice-Chair works directly with one of Working Groups and helps facilitate cooperation. Externally, Vice-Chairs are strengthening ties with UN scientific bodies including IPBES, the International Resources Panel, and the World Climate Research Programme. IPBES has invited us to co-sponsor a workshop on biodiversity and climate change, and we continue to explore other opportunities for joint work.
Third: Policy relevance: IPCC findings remain central to global climate policymaking at all levels. They are durable and stand the test of time. At COP30 in Belém, the Mutirao decision refers to the findings of the IPCC Sixth Assessment Report on what does it take to limit global warming to 1.5 degree. The decision underscores the centrality of equity and the best available science for effective climate action and policymaking, as provided by the Intergovernmental Panel on Climate Change.
Let me turn to our the products of the 7th assessment cycle. This cycle includes seven reports, each at different production stage. The Special Report on Climate Change and Cities is underway, with its First Order Draft under expert review and the next Lead Author Meeting scheduled in Oslo in January. It is scheduled for release in early 2027.
The Task Force on National Greenhouse Gas Inventories is preparing two methodology reports due in 2027, including one on Short-Lived Climate Forcers and another on Carbon Dioxide Removal, Carbon Capture, Utilisation and Storage.
Your work this week begins the drafting of the three Working Group contributions to the Seventh Assessment Report. These reports will start to appear in 2028. The cycle will conclude with the Synthesis Report, scheduled for release in late 2029, for which I am responsible.
We are also preparing several expert meetings and workshops, including on Diverse Knowledge Systems, Methods of Assessment, Climate Impacts and Adaptation Metrics, Earth System Tipping Points, Climate and Agriculture, Health and Climate Change, and Regional Climate Information and Atlas and Science of Communicating the Science. These efforts will support your work. .
Ladies and gentlemen, the significance of our next assessment report cannot be overstated. You embark on this work in a time of geopolitical uncertainty and new challenges to science and its integrity. Our mission remains clear: to provide governments with rigorous, policy-relevant, and neutral scientific information. IPCC reports continue to shape climate policies and climate action at every level, including international negotiations, as demonstrated at COP conferences under UNFCCC auspices.
The IPCC’s strength lies in its scientific depth, its rigorous processes, and its ability to achieve consensus among 195 member governments. Your expertise allows us to synthesize an ever-growing body of knowledge and to identify actionable pathways to solutions addressing the climate change challenges.
I want to thank you for your commitment and for volunteering your time and knowledge. It is an honour to begin this work with you. I am looking forward to getting to know you and working with you and wish you a productive and collegial First Lead Author Meeting—rich in insight, collaboration, and respect.
Thank you.
Paris, Dec 1 – More than six hundred experts appointed to the three Working Groups of the Intergovernmental Panel on Climate Change (IPCC) are gathering in Paris this week to commence work on the first draft of IPCC’s Seventh Assessment Report (AR7). This is the first time in IPCC’s history that the three Working Groups are holding a joint Lead Author Meeting.
At the invitation of the French government, through the Ministry of Ecological Transition, Biodiversity, and International Negotiations on Climate and Nature, the Ministry of Education and Research and the Ministry for Europe and Foreign Affairs, the IPCC’s Lead Author Meeting, held jointly by the three Working Groups, is taking place from 1 to 5 December. The authors, from more than 100 countries, will focus their work on the initial drafts of the three Working Group contributions to AR7 and cross-cutting topics. Bringing together authors from all three Working Groups in a single venue aims to enable the IPCC to take an ambitious qualitative leap in assessing key interdisciplinary questions related to climate change.
“It is apt that France is hosting our first Lead Author Meeting for the Seventh Assessment Report on the 10th anniversary of the Paris Agreement. The meeting marks the beginning of our assessment of the latest science related to climate change. From here on, our focus will be on delivering scientifically robust and actionable findings relevant for the world’s policymakers,” said IPCC Chair Jim Skea.
The IPCC provides the world’s policymakers with comprehensive summaries that synthesise and contextualise what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks. Through its assessments, the IPCC identifies the strength of scientific agreement in different areas and indicates where further research is needed.
“In this year marking the 10th anniversary of the Paris Agreement, France is proud to host the very first joint meeting of all IPCC authors. This is an opportunity to send a strong message of support for science, which must remain the foundation of our decisions to reduce our emissions everywhere across the world,” said Monique Barbut, Minister of Ecological Transition, Biodiversity and International Negotiations on Climate and Nature.
Mr Jean-Noël Barrot, Minister for Europe and Foreign Affairs said: “Ten years after the Paris Agreement, France is proud to champion climate and scientific diplomacy informed by the work of the IPCC. In an era marked by growing information warfare, France stands as a steadfast bulwark against attacks on science. We will continue to act with strength and determination to ensure that science and climate action remain inseparable.”
IPCC assessments aim for the highest standards of scientific excellence, balance, and clarity. Appointed experts volunteer their time and expertise as IPCC authors to assess the tens of thousands of scientific papers published each year.
“The sheer volume and high level of interest that we received from the scientific community to participate in the IPCC is a positive indication of a global commitment to advance climate action policies that are rooted in science,” said Robert Vautard, Co-Chair of Working Group I and senior climate scientist at the National Centre for Scientific Research at Institute Pierre-Simon Laplace, Paris.
IPCC reports are subject to multiple stages of review to ensure a comprehensive, objective and transparent assessment of the current state of knowledge of the science related to climate change. An open and transparent review by experts and governments around the world is an essential part of the IPCC process, to ensure an objective and complete assessment and to reflect a diverse range of views and expertise.
The IPCC’s first joint Lead Author Meeting will be opened by Monique Barbut, Minister of Ecological Transition, Biodiversity and International Negotiations on Climate and Nature.
For more information about the first Lead Author Meeting please contact:
Woo Qiyun, Senior Communications Manager of the IPCC Working Group II (media@ipccwg2.org).
Media requests for interviews with IPCC Chair Jim Skea should be addressed to IPCC Head of Communications, Andrej Mahecic (amahecic@wmo.int).
ENDS
Notes for Editors
What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide political leaders with periodic scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. In the same year the UN General Assembly endorsed the action by the WMO and UNEP in jointly establishing the IPCC. It has 195 member states.
Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, scientists and experts volunteer their time as IPCC authors to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks.
The IPCC has three working groups: Working Group I, assessing the physical science basis of climate change; Working Group II, assessing impacts, adaptation and vulnerability; and Working Group III, assessing 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 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.
About the Seventh Assessment Cycle
Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle, which formally began in July 2023 with the elections of the new IPCC and Task Force Bureaus at the IPCC’s Plenary Session in Nairobi.
At its first Plenary Session in the seventh assessment cycle – the 60th Plenary Session in Istanbul, Türkiye, in January 2024 – the Panel agreed to produce in this cycle the three Working Group contributions to the Seventh Assessment Report (AR7), namely the Working Group I report on the Physical Science Basis, the Working Group II report on Impacts, Adaptation and Vulnerability and the Working Group III report on Mitigation of Climate Change. The Synthesis Report of the Seventh Assessment Report will be produced after the completion of the Working Group reports and released by late 2029.
During its 62nd Plenary Session held in Hangzhou, China, in February 2025, the Panel has agreed on the outlines of the three Working Group contributions to the Seventh Assessment Report (AR7).
At the Panel’s most recent Plenary Session in Lima, Peru, in October 2025, member governments agreed on the scientific content of the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage. There, the Panel also agreed on the 2026 workplan for the three Working Group contributions to the Seventh Assessment Report
The Panel decided already during the previous cycle to produce a Special Report on Climate Change and Cities and a Methodology Report on Short-lived Climate Forcers during AR7.
At the IPCC’s 61st Plenary Session held in Sofia, Bulgaria, from 27 July to 2 August 2024, the Panel agreed upon the outlines for the Special Report on Climate Change and Cities scheduled for approval and publication in March 2027 and for the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers scheduled for publication in the second half 2027.
In addition, a revision of the 1994 IPCC Technical Guidelines on impacts and adaptation as well as adaptation indicators, metrics and guidelines, will be developed in conjunction with the Working Group II report and published as a separate product.
IPCC’s latest report, the Sixth Assessment Report, was completed in March 2023 with the release of its Synthesis Report, which provided direct scientific input to the First Global Stocktake process under the United Nations Framework Convention on Climate Change at COP28 in Dubai.
GENEVA, Nov 27 – More than six hundred experts appointed to the three Working Groups of the Intergovernmental Panel on Climate Change (IPCC) will gather in Paris from 1 to 5 December 2025 to begin the drafting of the IPCC’s Seventh Assessment Report (AR7).
Hosted by the French Government, through the Ministry of Ecological Transition, Biodiversity, and International Negotiations on Climate and Nature, the Ministry of Education and Research and the Ministry for Europe and Foreign Affairs, this is the First Lead Author Meeting, held jointly by the three Working Groups.
Authors from more than 100 countries will focus their work on the initial drafts of the three Working Group contributions to AR7 and cross-cutting topics. Bringing together authors from all three Working Groups in a single venue aims to enable the IPCC to take an ambitious qualitative leap in assessing key interdisciplinary questions related to climate change.
Virtual Media Briefing (28 November 2025)
On Friday 28 November at 4 pm CET, a virtual media briefing will be held ahead of the official opening of the first Lead Author Meeting, which is taking place on Monday 1 December 2025. This media briefing is organised by the French Ministry of Ecological Transition, Biodiversity, Forestry, Sea and Fisheries, in conjunction with the IPCC.
Speakers include:
• Gabriel Normand, diplomatic advisor to Monique Barbut
• Robert Vautard, Co-Chair of IPCC Working Group I
Further information can be found here.
Opening session (1 December 2025)
The ceremonial opening of the First Lead Author Meeting will take place on Monday, 1 December 2025, at 9.00 am at the H4 Hotel Wyndham Paris Pleyel (49 Boulevard Anatole France, 93200 Saint-Denis).
IPCC authors will be addressed by the Minister of Ecological Transition Monique Barbut, the Mayor of Saint-Denis Mathieu Hanotin, the Chair of the IPCC Jim Skea and the Secretary of the IPCC Abdalah Mokssit.
Except for the opening session, the IPCC meeting is closed to the media.
Registration is essential. Please register here by 8 pm CET, 30 November 2025.
Further information can be found here.
Panel discussion: “Ten Years After the Paris Agreement: Where Are We Headed? Unique Insights from the IPCC Leadership (3 Dec 2025)
SciencesPo in Paris will host a panel discussion entitled “Ten Years After the Paris Agreement: Where Are We Headed? Unique Insights from the IPCC Leadership” on 3 December 2025, starting at 19:15 in Émile Boutmy Amphitheatre (27 rue Saint-Guillaume, 75007, Paris).
Laurent Fabius, President of COP21 and Chair of the Circle of COP Presidents will deliver opening remarks and moderate the event featuring Jim Skea, IPCC Chair; Robert Vautard, Co-Chair of IPCC Working Group I; Bart van den Hurk, Co-Chair of IPCC Working Group II; and Joy Jacqueline Pereira, Co-Chair of IPCC Working Group III.
Media requests for interviews with IPCC Chair Jim Skea should be addressed to IPCC Head of Communications, Andrej Mahecic (amahecic@wmo.int).
For scheduling interviews with IPCC Co-Chairs and Bureau Members, please contact Woo Qiyun, Senior Communications Manager of the IPCC Working Group II (media@ipccwg2.org).
***
Notes for Editors
What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide political leaders with periodic scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. In the same year the UN General Assembly endorsed the action by the WMO and UNEP in jointly establishing the IPCC. It has 195 member states.
Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, scientists and experts volunteer their time as IPCC authors to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks.
The IPCC has three working groups: Working Group I, assessing the physical science basis of climate change; Working Group II, assessing impacts, adaptation and vulnerability; and Working Group III, assessing 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 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.
About the Seventh Assessment Cycle
Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle, which formally began in July 2023 with the elections of the new IPCC and Task Force Bureaus at the IPCC’s Plenary Session in Nairobi.
At its first Plenary Session in the seventh assessment cycle – the 60th Plenary Session in Istanbul, Türkiye, in January 2024 – the Panel agreed to produce in this cycle the three Working Group contributions to the Seventh Assessment Report (AR7), namely the Working Group I report on the Physical Science Basis, the Working Group II report on Impacts, Adaptation and Vulnerability and the Working Group III report on Mitigation of Climate Change. The Synthesis Report of the Seventh Assessment Report will be produced after the completion of the Working Group reports and released by late 2029.
During its 62nd Plenary Session held in Hangzhou, China, in February 2025, the Panel has agreed on the outlines of the three Working Group contributions to the Seventh Assessment Report (AR7).
At the Panel’s most recent Plenary Session in Lima, Peru, in October 2025, member governments agreed on the scientific content of the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage. There, the Panel also agreed on the 2026 workplan for the three Working Group contributions to the Seventh Assessment Report
The Panel decided already during the previous cycle to produce a Special Report on Climate Change and Cities and a Methodology Report on Short-lived Climate Forcers during AR7.
At the IPCC’s 61st Plenary Session held in Sofia, Bulgaria, from 27 July to 2 August 2024, the Panel agreed upon the outlines for the Special Report on Climate Change and Cities scheduled for approval and publication in March 2027 and for the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers scheduled for publication in the second half 2027.
In addition, a revision of the 1994 IPCC Technical Guidelines on impacts and adaptation as well as adaptation indicators, metrics and guidelines, will be developed in conjunction with the Working Group II report and published as a separate product.
IPCC’s latest report, the Sixth Assessment Report, was completed in March 2023 with the release of its Synthesis Report, which provided direct scientific input to the First Global Stocktake process under the United Nations Framework Convention on Climate Change at COP28 in Dubai.
For more information visit www.ipcc.ch
GENEVA, Nov 19 – The Intergovernmental Panel on Climate Change (IPCC) is calling for nominations of the authors for the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage. Carbon Dioxide Removal refers to anthropogenic activities that remove CO2 from the atmosphere and store it durably in geological reservoirs or in products.
The content of the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage was agreed upon at the IPCC’s 63rd Plenary Session held in Lima from 27 to 30 October 2025.
“With immediate, deep and sustained reductions in greenhouse gas emissions and deployment of substantial CO2 removal, it may still be possible to limit global warming to 1.5°C by the end of this century. Greater knowledge about carbon dioxide removal technologies can complement climate mitigation strategies. This methodology report will be important for the possible integration of these into national GHG inventories and climate action plans,” said Task Force on National Greenhouse Gas Inventories Co-Chair Takeshi Enoki.
The Coordinating Lead Authors and Lead Authors are responsible for drafting the different chapters of the Methodology Report and revising them based on comments submitted during the review process.
Hundreds of experts worldwide volunteer their time and expertise to produce the IPCC’s reports. It is important that the author teams aim to reflect a range of scientific and technical views and backgrounds. The IPCC also seeks a balance of male and female experts, as well as between those experienced with working on IPCC reports and those new to the process, including younger experts.
The 2027 IPCC Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage is being prepared by the Task Force on National Greenhouse Gas Inventories. The Task Force Bureau will select Coordinating Lead Authors, Lead Authors and Review Editors from the list of nominations.
Those interested in being nominated for the author team should contact their relevant Focal Point. A list of Focal Points for IPCC member governments and observer organizations is available here.
Governments, Observer Organizations, and IPCC Bureau Members have been requested to submit their nominations by Friday 12 December 2025 (midnight CET).
Nominations are submitted through a dedicated online nomination tool by Focal Points and IPCC Bureau Members only.
More information on the nomination process is here and how the IPCC selects its authors is available here.
Notes for Editors
What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide political leaders with periodic scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. In the same year the UN General Assembly endorsed the action by the WMO and UNEP in jointly establishing the IPCC. It has 195 member states.
Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, scientists and experts volunteer their time as IPCC authors to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks.
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 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.
About the Seventh Assessment Cycle
Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle, which formally began in July 2023 with the elections of the new IPCC and Task Force Bureaus at the IPCC’s Plenary Session in Nairobi.
At its first Plenary Session in the seventh assessment cycle – the 60th Plenary Session in Istanbul, Türkiye, in January 2024 – the Panel agreed to produce in this cycle the three Working Group contributions to the Seventh Assessment Report (AR7), namely the Working Group I report on the Physical Science Basis, the Working Group II report on Impacts, Adaptation and Vulnerability and the Working Group III report on Mitigation of Climate Change. The Synthesis Report of the Seventh Assessment Report will be produced after the completion of the Working Group reports and released by late 2029.
The Panel decided already during the previous cycle to produce a Special Report on Climate Change and Cities and a Methodology Report on Short-lived Climate Forcers during AR7.. Scientists have also been asked to deliver a Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage. At the IPCC’s 61st Plenary Session held in Sofia, Bulgaria, from 27 July to 2 August 2024, the Panel agreed upon the outlines for the Special Report on Climate Change and Cities scheduled for approval and publication in March 2027 and for the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers scheduled for publication in the second half 2027. The Panel agreed on the outlines of the Working Group contributions to the Seventh Assessment Report during its 62nd Session in February 2025 held in in Hangzhou, China.
In addition, a revision of the 1994 IPCC Technical Guidelines on impacts and adaptation as well as adaptation indicators, metrics and guidelines, will be developed in conjunction with the Working Group II report and published as a separate product.
IPCC’s latest report, the Sixth Assessment Report, was completed in March 2023 with the release of its Synthesis Report, which provided direct scientific input to the First Global Stocktake process under the United Nations Framework Convention on Climate Change at COP28 in Dubai.
The Sixth Assessment Report comprises three Working Group contributions and a Synthesis Report. The Working Group I contribution Climate Change 2021: the Physical Science Basis was released on 9 August 2021. The Working Group II contribution, Climate Change 2022: Impacts, Adaptation and Vulnerability, was released on 28 February 2022. The Working Group III contribution, Climate Change 2022: Mitigation of Climate Change, was released on 4 April 2022 and the Synthesis Report on 20 March 2023. The Synthesis Report to the Sixth Assessment Report, distils and integrates the findings of the three Working Group assessments as well as the three Special Reports released in 2018 and 2019.
The special reports were on Global Warming of 1.5°C (October 2018.), Climate Change and Land (August 2019) and, the Ocean and Cryosphere in a Changing Climate (September 2019).
For more information visit www.ipcc.ch.
The website includes outreach materials including videos about the IPCC and video recordings from outreach events conducted as webinars or live-streamed events.
Most videos published by the IPCC can be found on our YouTube channel.
10 November 2025, video address
CHECK AGAINST DELIVERY
Your Excellencies, distinguished delegates, colleagues and friends, ladies and gentlemen,
On behalf of the Intergovernmental Panel on Climate Change – the IPCC – I would like to thank you for the invitation to address the opening of the Earth Information Day at COP30.
Although I am not with you in person, I would like to take this opportunity to inform you about the status of our seventh assessment cycle and our work assessing the latest science related to climate change.
Following the Panel’s 63rd Plenary Session two weeks ago in Lima, the scientific content of all six reports for this cycle has been agreed. These include the three Working Group contributions to the Seventh Assessment Report, respectively covering physical science, adaptation and mitigation; the 2027 Special Report on Cities and Climate Change; the 2027 Methodology Report on Short-lived Climate Forcers; and the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage. The critical knowledge gaps that these reports will address have been identified.
The reports are in different stages of production:
Since the start of the current cycle two years ago, significant progress has been made in expanding access to scientific literature for authors from developing countries, in securing support for Chapter Scientists from developing countries, and successfully delivering an Expert Meeting on Gender, Diversity, Equity, and Inclusivity. These efforts confirm our commitment to inclusivity, diversity and equity across IPCC.
At this stage of the cycle, we can now bridge between the knowledge base established in the past cycle with the key questions and prospective scientific findings of the current one. And of course, observational data is foundational for IPCC’s work, including in the context of overshoot of 1.5 degrees warming.
Now to illustrate all this, allow me to expand on three topics: attribution, adaptation, and sustainable development and equity.
So regarding attribution, the Synthesis Report of the Sixth Assessment Report clearly states that “human activities, principally through emissions of greenhouse gases, have unequivocally caused global warming”.
There is high confidence that some impacts, such as observable increases in hot extremes, can be attributed to human activities. Human activities are likely the principal driver of intensifying heavy precipitation. Yet there is lower confidence regarding human influence on agricultural and ecological drought. The Seventh Assessment Report will address these lower-confidence topics with a view, if its supported by the evidence, to reaching robust conclusions.
We will be addressing the attribution of specific weather events to global climate change. The Working Group I report will extend the attribution of large-scale changes in the global and regional climate systems to the attribution of local-level changes and extremes. Working Group II will extend the assessment of attribution to observed and projected impacts.
We are going to place greater emphasis on adaptation in the current cycle, while not, of course, neglecting mitigation. Adaptation has lacked the means to measure progress. It simply isn’t easy to separate adaptation investment from wider infrastructure investment and patterns of development. Working Group II will address that by revising and updating the 1994 Technical Guidelines on assessing impacts and adaptation, including indicators, metrics and methodologies. The Working Group II report will, for the first time, include a chapter on finance, an indispensable precondition for successful adaptation.
Regarding sustainable development, the IPCC will pay closer attention to the role of climate action, including progress towards the Sustainable Development Goals. Regional and thematic chapters of the Working Group II report will address distributional aspects, including human rights, equity and justice, and impacts on vulnerable groups. The report also includes a chapter focused on responses to losses and damages, which are disproportionately experienced by vulnerable communities and groups.
An entire chapter of the Working Group III report is dedicated to sustainable development and mitigation, covering the distributional consequences of mitigation actions, synergies and trade-offs with sustainable development, and implications for biodiversity and ecosystems, conservation, and restoration.
Ladies and gentlemen,
The broader scientific community is already hard at work on these topics and others. Our unique role is to assess and synthesise the vast and exponentially growing body of knowledge on climate change, its impacts, and available response options. During testing times, and facing complex challenges, IPCC will continue to reach for consensus on a shared and trusted evidence base. This is essential for underpinning effective action on the truly global challenge of climate change.
Thank you.
10 November 2025, video address
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Your Excellencies, distinguished delegates, colleagues and friends, ladies and gentlemen,
Thank you for the invitation to the Intergovernmental Panel on Climate Change – the IPCC – to address the opening of COP 30. As the Chair of the UN body mandated to assess the scientific knowledge related to climate change, we are grateful for the opportunity to deliver this video message.
Allow me to start by congratulating the government of Brazil and the city of Belém on hosting this year’s COP, the first in Brazil since the 1992 Earth Summit. The “Rio Conventions” stand as a testament to a global commitment to tackling environmental and development issues.
Since then, the challenges posed by climate change to both human and natural systems have become both more acute and more evident.
The World Meteorological Organization has shown that 2024 was the warmest year on record, reaching 1.55 degrees Celsius above preindustrial levels, with the long-run trend standing at between 1.34 and 1.42 degrees Celsius.
UNEP’s 2025 Emissions Gap Report, released last week, shows that even if countries fully implement their Nationally Determined Contributions (NDCs), global temperatures could still rise by 2.3 to 2.5°C this century.
Based on the evidence in the most recent IPCC reports, it is now almost inevitable that 1.5°C of global warming will be exceeded in the near term. This is unambiguously due to insufficient climate action over the last few years, and the consequent continued increase in greenhouse gas emissions.
But, returning global warming to 1.5°C by the end of this century may still be possible. This would involve immediate, deep and sustained reductions in carbon dioxide emissions, as well as the removal of substantial amounts of carbon dioxide from the atmosphere. Though there are important knowledge gaps around the feasibility of doing the latter.
In that regard, I am pleased to inform you that two weeks ago, the IPCC member governments agreed on the scientific content of the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage at the Panel’s 63rd Plenary session, in Lima, Peru.
With the Panel’s latest decision, the scientific content of all planned reports for the IPCC’s seventh assessment cycle has been agreed, and this clears the way for their production and publication starting from 2027.
IPCC reports have unequivocally established that climate-related risks, losses and damages, and adaptation needs increase with every increment of global warming. The Seventh Assessment Report, while certainly not neglecting mitigation, will place greater emphasis on climate resilience and adaptation. For the first time in IPCC history, we will have chapters on adaptation finance and responses to losses and damages.
As the IPCC Sixth Assessment Report shows, we have agency over our collective future, through both adaptation and mitigation actions. We have the know-how, the resources, and the tools to address the climate change challenge.
Ladies and gentlemen,
The IPCC’s capacity to assess and synthesise the vast and continually growing body of scientific knowledge on climate change, its impacts, and available responses is unique.
The key findings of our reports are durable. The many adaptation and mitigation options identified in our reports can be implemented right now. The IPCC is going to continue to deliver clear, authoritative, timely and actionable scientific findings that can support UNFCCC processes.
I wish you all fruitful and constructive discussions in Belém. I will be following your work closely and contributing to several events remotely.
Thank you.
ENDS
LIMA, Oct 30 – The member governments of the Intergovernmental Panel on Climate Change (IPCC) agreed on the scientific content of the 2027 Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage at the Panel’s 63rd Plenary session, which closed this evening in Lima, Peru.
This is one of two methodology reports of the seventh assessment cycle. Carbon Dioxide Removal refers to anthropogenic activities that remove CO2 from the atmosphere and store it durably in geological reservoirs or in products.
The decision opens the next important stage in the report production in which member governments, observer organizations, and IPCC Bureau members will nominate experts to serve as authors.
With this decision, the entire scientific content of all planned reports for the seventh assessment cycle has been agreed upon, clearing the way for their production.
The Panel also agreed on the 2026 workplan for the three Working Group contributions to the Seventh Assessment Report (AR7). The Panel invited the three Working Groups to continue their work by convening Lead Author meetings and other activities planned and budgeted for 2026. The work on the three Working Group contributions to the Seventh Assessment Report will kick off in Paris already in December this year with the first-ever joint Lead Author meeting.
“Panel’s decisions in Lima give strong impetus to our work on our methodology reports and ensure the continuity of IPCC scientific activities and operations related to the production of the three Working Group contributions to the Seventh Assessment Report,” said IPCC Chair Jim Skea.
The three Working Group contributions assess the physical science basis of climate change; impacts, adaptation and vulnerability; and mitigation of climate change.
The Panel also approved IPCC’s overall budget for 2026.
For more information, contact:
IPCC Press Office
Email: ipcc-media@wmo.int
Andrej Mahecic: +41 79 704 2459 Werani Zabula: +41 22 730 8120
Notes for Editors
What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide political leaders with periodic scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. In the same year the UN General Assembly endorsed the action by the WMO and UNEP in jointly establishing the IPCC. It has 195 member states.
Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, scientists and experts volunteer their time as IPCC authors to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks.
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 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.
About the Seventh Assessment Cycle
Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle, which formally began in July 2023 with the elections of the new IPCC and Task Force Bureaus at the IPCC’s Plenary Session in Nairobi.
At its first Plenary Session in the seventh assessment cycle – the 60th Plenary Session in Istanbul, Türkiye, in January 2024 – the Panel agreed to produce in this cycle the three Working Group contributions to the Seventh Assessment Report (AR7), namely the Working Group I report on the Physical Science Basis, the Working Group II report on Impacts, Adaptation and Vulnerability and the Working Group III report on Mitigation of Climate Change. The Synthesis Report of the Seventh Assessment Report will be produced after the completion of the Working Group reports and released by late 2029.
The Panel decided already during the previous cycle to produce a Special Report on Climate Change and Cities and a Methodology Report on Short-lived Climate Forcers during AR7.. Scientists have also been asked to deliver a Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage. At the IPCC’s 61st Plenary Session held in Sofia, Bulgaria, from 27 July to 2 August 2024, the Panel agreed upon the outlines for the Special Report on Climate Change and Cities scheduled for approval and publication in March 2027 and for the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers scheduled for publication in the second half 2027. The Panel agreed on the outlines of the Working Group contributions to the Seventh Assessment Report during its 62nd Session in February 2025 held in in Hangzhou, China.
In addition, a revision of the 1994 IPCC Technical Guidelines on impacts and adaptation as well as adaptation indicators, metrics and guidelines, will be developed in conjunction with the Working Group II report and published as a separate product.
IPCC’s latest report, the Sixth Assessment Report, was completed in March 2023 with the release of its Synthesis Report, which provided direct scientific input to the First Global Stocktake process under the United Nations Framework Convention on Climate Change at COP28 in Dubai.
The Sixth Assessment Report comprises three Working Group contributions and a Synthesis Report. The Working Group I contribution Climate Change 2021: the Physical Science Basis was released on 9 August 2021. The Working Group II contribution, Climate Change 2022: Impacts, Adaptation and Vulnerability, was released on 28 February 2022. The Working Group III contribution, Climate Change 2022: Mitigation of Climate Change, was released on 4 April 2022 and the Synthesis Report on 20 March 2023. The Synthesis Report to the Sixth Assessment Report, distils and integrates the findings of the three Working Group assessments as well as the three Special Reports released in 2018 and 2019.
The special reports were on Global Warming of 1.5°C (October 2018.), Climate Change and Land (August 2019) and, the Ocean and Cryosphere in a Changing Climate (September 2019).
For more information visit www.ipcc.ch.
The website includes outreach materials including videos about the IPCC and video recordings from outreach events conducted as webinars or live-streamed events.
Most videos published by the IPCC can be found on our YouTube channel.
LIMA, PERU, Oct 27 – The Intergovernmental Panel on Climate Change (IPCC) today opened its 63rd Plenary Session in Lima, Peru, bringing together some 300 delegates from IPCC member governments and observer organizations to advance its work in the seventh assessment cycle.
Over the four-day session, the Panel will continue discussions on the timelines for the three Working Group contributions to the Seventh Assessment Report (AR7), as well as on the draft outline and timeline of the Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage.
In addition, the Panel will discuss the IPCC’s Trust Fund programme and budget for 2026, the indicative budget for 2027 and 2028, a proposal for an expert meeting, and other agenda items.
“By now, we know the scope of the Seventh Assessment Report, and we have selected the scientists who will be delivering the work,” said IPCC Chair Jim Skea. “Building on the progress made so far, the Panel now needs to settle the important matter of the timelines for producing the reports, taking into account inclusive assessment practices and policy relevance. I trust that Panel members will seek consensus on the timelines in line with the IPCC’s established procedures.”
The Peruvian Minister of Foreign Affairs Hugo de Zela addressed the opening of the IPCC’s 63rd Plenary Session, reaffirming the country’s commitment to the global fight against climate change. In his remarks, Minister De Zela urged member states to act with a sense of urgency and responsibility to finalize the reports and methodologies necessary to accelerate climate action.
“Information produced by the IPCC remains essential to guiding the policy decisions of States seeking to reduce global warming,” said Minister De Zela.
The IPCC’s seventh assessment cycle formally began in July 2023 and will culminate in the release of the AR7 Synthesis Report in 2029. In this cycle, the IPCC will prepare the AR7, which comprises three Working Group contributions and a Synthesis Report, as well as update the 1994 Technical Guidelines for Assessing Climate Change Impact and Adaptation. The Panel will also produce a Special Report on Climate Change and Cities, and two Methodology Reports.
Delegates were welcomed at an opening ceremony in Lima this morning, which included remarks from Peru’s Minister of Foreign Affairs, Ambassador Hugo de Zela, Deputy Minister of Strategic Development of Natural Resources for Peru’s Ministry of Environment, Raquel Hilianova Soto Torres, the IPCC Chair Jim Skea, and Director of Climate Change Division of the UN Environment Programme (UNEP) Martin Krause. The opening also included projections of video messages from Celeste Saulo, the Secretary-General of the World Meteorological Organization and Simon Stiell, the Executive Director of the United Nations Framework Convention on Climate Change.
Except for the opening session, the IPCC meeting is closed to the media. Visuals and video messages from the opening ceremony will be available here.
For more information, contact:
IPCC Press Office
Email: ipcc-media@wmo.int
Andrej Mahecic: +41 79 704 2459 Werani Zabula: +41 22 730 8120
Notes for Editors
What is the IPCC?
The Intergovernmental Panel on Climate Change (IPCC) is the UN body for assessing the science related to climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide political leaders with periodic scientific assessments concerning climate change, its implications and risks, as well as to put forward adaptation and mitigation strategies. In the same year the UN General Assembly endorsed the action by the WMO and UNEP in jointly establishing the IPCC. It has 195 member states.
Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, scientists and experts volunteer their time as IPCC authors to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks.
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 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.
About the Seventh Assessment Cycle
Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle, which formally began in July 2023 with the elections of the new IPCC and Task Force Bureaus at the IPCC’s Plenary Session in Nairobi.
At its first Plenary Session in the seventh assessment cycle – the 60th Plenary Session in Istanbul, Türkiye, in January 2024 – the Panel agreed to produce in this cycle the three Working Group contributions to the Seventh Assessment Report (AR7), namely the Working Group I report on the Physical Science Basis, the Working Group II report on Impacts, Adaptation and Vulnerability and the Working Group III report on Mitigation of Climate Change. The Synthesis Report of the Seventh Assessment Report will be produced after the completion of the Working Group reports and released by late 2029.
The Panel decided already during the previous cycle to produce a Special Report on Climate Change and Cities and a Methodology Report on Short-lived Climate Forcers during AR7.. Scientists have also been asked to deliver a Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage. At the IPCC’s 61st Plenary Session held in Sofia, Bulgaria, from 27 July to 2 August 2024, the Panel agreed upon the outlines for the Special Report on Climate Change and Cities scheduled for approval and publication in March 2027 and for the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers scheduled for publication in the second half 2027. The Panel agreed on the outlines of the Working Group contributions to the Seventh Assessment Report during its 62nd Session in February 2025 held in in Hangzhou, China.
In addition, a revision of the 1994 IPCC Technical Guidelines on impacts and adaptation as well as adaptation indicators, metrics and guidelines, will be developed in conjunction with the Working Group II report and published as a separate product.
IPCC’s latest report, the Sixth Assessment Report, was completed in March 2023 with the release of its Synthesis Report, which provided direct scientific input to the First Global Stocktake process under the United Nations Framework Convention on Climate Change at COP28 in Dubai.
The Sixth Assessment Report comprises three Working Group contributions and a Synthesis Report. The Working Group I contribution Climate Change 2021: the Physical Science Basis was released on 9 August 2021. The Working Group II contribution, Climate Change 2022: Impacts, Adaptation and Vulnerability, was released on 28 February 2022. The Working Group III contribution, Climate Change 2022: Mitigation of Climate Change, was released on 4 April 2022 and the Synthesis Report on 20 March 2023. The Synthesis Report to the Sixth Assessment Report, distils and integrates the findings of the three Working Group assessments as well as the three Special Reports released in 2018 and 2019.
The special reports were on Global Warming of 1.5°C (October 2018.), Climate Change and Land (August 2019) and, the Ocean and Cryosphere in a Changing Climate (September 2019).
For more information visit www.ipcc.ch.
The website includes outreach materials including videos about the IPCC and video recordings from outreach events conducted as webinars or live-streamed events.
Most videos published by the IPCC can be found on our YouTube channel.
27 October 2025, Lima, Peru.
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Your Excellency, Minister of Foreign Affairs, Ambassador Hugo de Zela,
Deputy Minister of Strategic Development of Natural Resources at the Ministry of Environment, Ms Raquel Hilianova Soto Torres,
Director of Climate Change Division of the UN Environment Programme, Martin Krause,
Distinguished delegates, dear colleagues, ladies and gentlemen,
Welcome to the sixty-third plenary session of the Intergovernmental Panel on Climate Change – the IPCC.
Allow me first to greet government delegations, representatives of observer organisations and members of the IPCC Bureau.
As the IPCC Chair, I wish to thank our hosts – the Peruvian government and the city of Lima – for their hospitality and excellent organisation. I know that they have made extraordinary efforts to show their hospitality and welcome us here in not the easiest circumstances.
Our host is a country of ancient civilisation – the Inca people. We have much to learn from cultures that came before us. The structures at Machu Picchu stand as a testament to the Incas’ engineering prowess, with structures built to last and designed to be earthquake-resistant. They practised disaster risk reduction before the term was invented.
This brings me to why we are in Lima this week. More than two years into the seventh assessment cycle, this is our fourth Plenary session. Input from the elected Bureau has been instrumental work in guiding the Panel and ensuring steady progress.
The expert review of the First Order Draft of the Special Report on Cities and Climate Change began ten days ago and will run until mid-December. The second Lead Author meeting for the Methodology Report on Short-Lived Climate Forcers took place less than two weeks ago, and authors are now working on the First Order Draft.
The Panel’s February decision on the scientific content of the three Working Group contributions to the Seventh Assessment Report enabled us to invite nominations of experts to serve as authors. The Bureau concluded its selection in July, and by the end of August, we had appointed 664 authors from more than 100 countries. Among them are seven Peruvian scientists working on the Special Report on Climate Change and Cities and the three Working Groups’ reports. With nominations exceeding available places by a factor of almost six, this speaks to the high quality of the Peruvian nominations.
During these 24 months of the cycle, significant progress has been made on expanded access to scientific literature for authors from developing countries, on a successful Expert Meeting on Gender, Diversity and Inclusion, and on securing support for Chapter Scientists from developing countries. These efforts reflect a growing commitment to inclusivity, diversity and equity across IPCC.
Ladies and gentlemen,
By now, we know the scope of scientific knowledge we need to assess for the Seventh Assessment Report, and who will be delivering the work.
The missing piece is a Panel decision setting out the workplans for the three Working Group reports. This is one of the priority agenda items this week.
Our work for this week also includes completing the outline of the Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilisation and Storage. Agreement on the outline is essential if we are to move forward promptly with this report.
Before I close, allow me to thank our member governments for their scientific and financial support. Our delivery of the most up-to-date, rigorously reviewed, best available science relies on voluntary financial contributions from our member governments.
I invite all member governments to offer support for the vitally important work that the Panel has agreed upon for this cycle. The IPCC Trust Fund is the main mechanism supporting participation from developing country governments and scientists.
Every contribution to the IPCC Trust Fund is important and appreciated. But predictable, multi-year funding commitments are especially valuable. They are vital for securing a sustainable and inclusive basis for IPCC’s current and future work.
Your voluntary contributions ensure the scientific integrity and continuity of the IPCC as the most authoritative and policy-relevant voice on climate science globally.
Thank you.
ENDS