How does the Working Group-III Report of the IPCC Sixth Assessment Address Carbon Dioxide Removal and Solar Radiation Modification?

This unit aims to unpack key information about how emerging climate-altering approaches, Carbon Dioxide Removal (CDR) and Solar Radiation Modification (SRM) are addressed in the Working Group III (WG-III) report for the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment, and to examine what (if any) implications this may have for governance. It seeks to answer the following questions:  

  • What are the key characteristics of the mitigation pathways that are compatible with the Paris Agreement temperature goals? And what are the major links to sustainable development?  
  • How does the WGIII report address CDR and its governance?  
  • How does the WGIII report address SRM and its governance? 


The Working Group-III contribution to the Sixth Assessment report of the IPCC focuses on climate change mitigation, assessing methods for reducing greenhouse gas emissions, and removing greenhouse gases from the atmosphere. This C2GLearn webinar aims to provide audiences with expert overviews of how the report addresses CDR and SRM, followed by a moderated Q&A session enabling the audience to ask clarifying questions and learn more.  

Speakers’ presentations will be pre-recorded and played to the webinar audience, with the speakers joining for the live Q&A session. Moderated by Nicholas Harrison, Director of knowledge Management at the Carnegie Climate Governance Initiative, speakers include: 

Glen Peters / CICERO Center for International Climate Research

Glen Peters is a Research Director and Senior Researcher at CICERO. He is a worldwide authority on historical and future energy and emission trends, demonstrated by highly cited articles and regular presentations to a variety of audience.

Dr Peters is on the Executive Team of the Global Carbon Budget, where he coordinates analysis on greenhouse gas emission trends and drivers, emission scenarios, and writing synthesis articles. He was on the Scientific Steering Committee of the Global Carbon Project for six years. He is a Lead Author for the IPCC Sixth Assessment Report on emission scenarios (WG3 Chapter 3).

Dr Peters has managed projects of various sizes, at both the national and European level, and involving clients from research councils to companies. He is currently involved in EU research projects on integrated assessment modelling, scenarios, carbon cycle, and emission verification. He regularly engages with users on emission scenarios, particularly describing how they can be used in their strategic planning. His research additionally covers various aspects of land use, the carbon cycle, and the climate response, where he is actively involved in research projects, several of where he is involved in user engagement and consultation. He is an active user of social media, with over 40,000 followers on Twitter. 

Joyashree Roy / Asian Institute of Technology

Prof. Joyashree Roy is the inaugural Bangabandhu Chair Professor at Asian Institute of Technology (AIT). She lectures at the Sustainable Energy Transition Programme,  Department of Energy, Environment, and Climate Change under School of Environment, Resources and Development, AIT, Thailand. She was Indian Council of Social Sciences Research (ICSSR) national fellow and a Ford Foundation Postdoctoral Fellow at Lawrence Berkeley National Laboratory, Berkeley, USA. 

She has been one of two coordinating Lead Authors of the Chapter 7 of the Inter-Governmental Panel on Climate Change’s (IPCC), AR4, WGIII on “Climate Change 2007: Mitigation of Climate Change”. She is also part of the IPCC Fifth and Sixth assessment cycles and was in the Land Ocean Interactions of the Coastal Zone (LOICZ) steering committee. In 2019 she was one of the  co-authors of  the report ‘The Ocean as a Solution to Climate Change: Five Opportunities for Action.’ of World Resources Institute.  

She was involved in the preparation of the Stern Review Report, Global Energy Assessment and many other national and global efforts. In her independent research capacity, she has authored books and written 137 articles in leading peer reviewed, professional journals and books. Professor Roy is the recipient of the 2021 Paradigm Award.


Masahiro Sugiyama / Institute for Future Initiatives, University of Tokyo

Masahiro (Masa) Sugiyama is an Associate Professor at the Institute for Future Initiatives (IFI), the University of Tokyo (UTokyo). He holds a Ph.D. in climate science and a master’s degree in technology and policy, both from MIT. Prior to joining UTokyo, he was a researcher at the Socio-Economic Research Center, the Central Research Institute of the Electric Power Industry. He joined UTokyo in April, 2014.

He is a lead author of the Working Group III’s contribution to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). His research areas include scenario analysis of climate and energy policy and governance of climate engineering from the public engagement perspective.

His most recent book is ”Controlling the Climate: The Risky Last Resort of Global Warming Countermeasures” (published by KADOKAWA) (in Japanese). 

Moderator: Nicholas Harrison / Carnegie Climate Governance Initiative

Nicholas Harrison brings 20 years’ experience working across Europe and internationally on sustainable development and climate change governance and implementation.

Prior to joining C2G, Harrison served as an adviser on climate action in the Executive Office of the United Nations secretary-general, supporting delivery and ratification of the Paris Agreement on climate change. Before this, as a senior consultant at Ecofys, he coordinated global teams of experts delivering high-profile international research assessments and analysis on climate change, sustainable energy, and low emissions development

In previous roles, Harrison served as an adviser on climate change and strategic intelligence for the UK Department of International Development, Department of Communities and Local Government, and the Office of the Deputy Prime Minister. He began his career in environmental engineering, moving into communications to promote renewable energy technologies, followed by various roles in city, regional, and national government, improving the use of data and evidence to deliver more sustainable development.

Harrison has written and presented widely on climate change and sustainable development, served on the Sustainable Communities committee of the British Standards Institution (BSI) and worked extensively to promote integrated multi-level governance and the role of cities, states, and other non-state actors in climate action.

He holds an MSc in organisational psychology from City University, London, is a fellow of LEAD International and the Norfolk Charitable Trust, and is an independent expert for the Climate KIC, Europe’s largest public-private innovation partnership focused on climate innovation to mitigate and adapt to climate change.

Watch recordings from this webinar

These recordings are also available with interpretation into 中文, Español and Français.


Glen Peters is a Research Director and Senior Researcher at CICERO.

Joyashree Roy is the inaugural Bangabandhu Chair Professor at Asian Institute of Technology (AIT).

Masahiro (Masa) Sugiyama is an Associate Professor at the Institute for Future Initiatives (IFI), the University of Tokyo (UTokyo).


For further information on this topic visit C2G’s IPCC landing page which has a range of knowledge products that might be of interest to you.

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C2G strives to achieve a diversity of views and backgrounds across all its events. To that end, it is always open to feedback and suggestions regarding future participants and topics, to ensure a range of perspectives by sector, gender, race, geography, age and other dimensions. It will not always achieve the necessary diversity in all circumstances due to issues of availability and familiarity, but aims over time to expand the range of contributors able to address its issuessubject to the broad principles outlined in its mission statement.  

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