Solar Radiation Modification: A Conversation on Governance and Research
Date and time: Monday 11 November, 18:30-20:00
Location: Zone B side events and special events
Livestream: Only on the digital platform accessible to registered conference participants.
Solar radiation modification (SRM), a controversial proposal for reducing climate risks, is receiving increasing attention. This event at COP29 will explore views on the potential of responsible research and assessment by addressing environmental and societal aspects, governance, uncertainty, transparency, global equity and inclusion.
Background
“Broken Record: Temperatures hit new highs, yet world fails to cut emissions (again)”. The 2023 Emissions Gap report from UNEP was unambiguous. Even full implementation of NDCs for 2030 would be nowhere near enough to keep temperature rises below 2C, let alone 1.5C. Meanwhile, the Sixth Assessment Report of the IPCC warns that warming in excess of 1.5C is highly likely. As the risk of overshooting 1.5°C increases, UNEP’s One Atmosphere report notes that alongside demands for deep emissions cuts and adaptation, people are calling for research into additional “emergency” options such as solar radiation modification (SRM). This is a controversial proposal for limiting global temperature rises and reducing changes to the hydrological cycle by reflecting some sunlight back into space.
One Atmosphere concludes that SRM is the only known way to quickly stop or reverse the rise in global temperatures. It might therefore be able to greatly reduce the impact of climate change while the world decarbonises. However, SRM would pose significant new risks that would need to be assessed against the risks of a warming world using a risk-vs risk framework.
The UNFCCC appropriately remains focused on accelerating decarbonisation, adapting to climate impacts, and addressing loss and damage. However, the conversation on SRM is also taking place domestically and internationally. The Sixth United Nations Environment Assembly (UNEA-6) considered a resolution on SRM, which sought to facilitate the sharing of information on research, deployment capabilities, ethics, and potential impacts, including risks, benefits, and uncertainties. Further deliberations on SRM and its governance are possible, if not likely, at UNEA-7 in 2025. We want to ensure that the wider climate, environment, sustainability, and Earth systems communities—especially in the climate-vulnerable Global South—engage in an open conversation that draws on the best available scientific evidence and understanding of the stakes involved.
What are the central issues of SRM research governance? What is the status of SRM research activities? Who are the key actors, and what role can they play in effective SRM research governance? What are the international SRM governance questions we should ask before the Seventh United Nations Environment Assembly, and who should be seated at the table?
Access the complete event agenda here.