Virtual Workshop Series on Stratospheric Aerosol Injection (SAI)

6 – 9 October 2025 via Zoom

The World Climate Research Program (WCRP) Lighthouse Activity “Research on Climate Intervention” and the Core Activity “Atmospheric Processes and their Role in Climate” are hosting a series of Virtual Workshops, in which the community can discuss the topic of Stratospheric Aerosol Injection (SAI), a proposed climate intervention that would aim to reduce the impacts of global warming through the injection of reflective particles in the stratosphere. As this topic becomes more widely discussed, it is important that robust scientific discussions are had to better identify potential risks and impacts of SAI across different scenarios, to understand and reduce uncertainties in future projections using Earth System Models, and to understand potential observational strategies to detect and monitor potential deployments. Furthermore, it is important to foster an inclusive, international dialogue where diverse perspectives are heard.

We welcome brief presentations from groups interested in showcasing and discussing their research on the topic, as well as participants that are interested in learning more and discussing potential future research activities.

Themes:

• Observational strategies: detection, monitoring and attribution
• SAI modeling: processes, capabilities and uncertainties
• Simulation strategies and scenario exploration (emulators)
• Impacts on atmospheric composition, from the stratosphere to air quality
• Global and regional surface climatic impacts, including societal and ecological
• Ethical aspects of studying and testing SAI

The SAI virtual workshops will be held between 6 to 9 Octobre 2025 via Zoom. It will be spread over four sessions to accommodate different time zones, with the following preliminary schedule:

• Session 1: 6 October 2025, 18:00 - 21:00 UTC
• Session 2: 7 October 2025, 15:00 - 18:00 UTC
• Session 3: 8 October 2025, 09:00 - 12:00 UTC
• Session 4: 9 October 2025, 06:00 - 09:00 UTC

Note that the number and length of sessions may be adjusted depending on indicated preferences and abstract submissions.
We plan to record talks and discussions for all sessions, with the recordings open to be viewed by registered participants.

   Online registration form

Please register before 15 August 2025.

If you can’t access the google form, you may download the pdf form and send it via email to This email address is being protected from spambots. You need JavaScript enabled to view it. and/or This email address is being protected from spambots. You need JavaScript enabled to view it.

Organizing Committee

The joint CLIVAR-OMDP and RIfS-CORDEX Task Force on Regional Ocean Climate Projections  is assembling a record inventory of regional ocean model projection simulations as both a resource for the regional ocean modeling community, to inform recommendations regarding community needs and priorities. The Task Force is collecting information for this inventory by way of voluntary survey with the intent of making synthesized information publicly available via the Task Force web page.

You’re invited to take the survey using the QR code below or using directly this link https://forms.office.com/e/18yxHGqWPZ  by 1 July 2025.

An international study, published in Science, has found that only 24% of present-day glacier mass will remain if the world were to warm to 2.7°C, the trajectory set by current climate policies. In contrast, limiting warming to 1.5°C — the target of the Paris Agreement — would preserve 54% of glacier mass.

To know more, read the study "Glacier preservation doubled by limiting warming to 1.5°C versus 2.7° - Harry Zekollari et al., Science, 2025, Vol 388, Issue 6750 pp. 979-983, DOI: 10.1126/science.adu4675.

The first Risk-KAN Symposium, convened at the International Institute for Applied Systems Analysis (IIASA) in Laxenburg at April 28th 2025, brought together researchers, practitioners, and stakeholders to chart the future direction of the Knowledge-Action Network on Emergent Risks and Extreme Events (Risk-KAN). Next to serving as the official kick-off of the new working group and leadership structure, the gathering focused on discussing how to advance transdisciplinary risk research and fostering actionable insights to support societal preparedness, resilience, and adaptation to compound and systemic risks in a changing climate.

Find out more about the First Risk-Kan Symposium Report