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RESEARCH PAPER: Collective climate geoengineering futures through a global participatory technology foresight exercise (ScienceDirect)
PROJECT: Nuffield Council on Bioethics begin work to explore the ethical considerations and health-related impacts of Solar Radiation Management (Nuffield Council on Bioethics)
CALL FOR INPUT: Uncertainty Database for Stratospheric Aerosol Injection | Deadline to submit inputs: 15 October 2025 (Reflective)
JOB OPPORTUNITY: Communications & Engagement Lead: Future Proofing our Climate & Weather | Deadline: 30 September 2025 with possible extension (ARIA)
PODCAST: Why is everyone talking about geoengineering? (Beyond the Ice)
EVENT RECORDING: Solar Geoengineering Research: Next Steps for Civil Society (Chesapeake Climate Action Network)
Read on to unpack more updates:
Measurement report: Aerosol vertical profiling over the Southern Great Barrier Reef using lidar and MAX-DOAS measurements
Authors: Robert G. Ryan, Lilani Toms-Hardman, Alexander Smirnov, Daniel P. Harrison, and Robyn Schofield
Synopsis: Measurements from MAX-DOAS and Mini MPL at One Tree Island (Feb–Apr 2023) reveal vertical aerosol profiles over the Southern Great Barrier Reef, critical for SRM modelling. Retrievals showed clean marine aerosol signatures, with extinction-to-backscatter ratio 0.031 and depolarization 0.015. Aerosol layers extended >2 km in mornings, ~1 km in afternoons. MAX-DOAS dual-wavelength retrievals aligned with MPL data. AOD values (~0.09) matched Microtops, confirming robust methods in humid, cloudy conditions.
Collective climate geoengineering futures through a global participatory technology foresight exercise
Authors: Benjamin K. Sovacool, Laurence L. Delina, Ben Martin
Synopsis: This study uses “participatory technology foresight” to explore public views on climate futures involving interventions like DAC, BECCS, SAI, and marine cloud brightening. Based on 44 focus groups across 22 countries, five futures emerged: Global Green Belt, Urban Carbon Gardens, Soil Revolution, Crop Failure & Cancer from SAI, and Interplanetary Sunshield. Findings show this method helps identify opportunities, risks, and actors, while ensuring public engagement in shaping climate policy.
Multi-Risk Governance of Solar Radiation Modification - Preprint
Authors: Jonathan B. Wiener, Tyler Felgenhauer, Mark Borsuk
Synopsis: SRM raises governance challenges due to its diverse biophysical and sociopolitical risks, differing by method (SAI, MCB, PSS-planetary sunshade system). A multi-risk framework enables holistic comparison with GHG mitigation and adaptation, highlighting affected groups and mapping risks to governance gaps. The study reviews uncoordinated, coordinated, and comprehensive frameworks, proposing two pathways forward: international SRM assessments and a transparent global monitoring system to build consensus and risk-superior policies.
An overview of five climate geoengineering futures
(Source)
Communications Earth & Environment - Pathways for prevention of cascading tipping points
Mongabay - Scientists weigh giant sea curtain to shield ‘Doomsday Glacier’ from melting
CIEL - The Risks of Geoengineering on Biodiversity
Repair - Geoengineering as a climate crutch-In response to urgent need for climate mitigation reformation and the indispensability of geoengineering under current insufficient efforts
David Suzuki Foundation - Costly geoengineering schemes could stall real solutions
Arctic Today - Abrupt changes in Antarctic call for emissions cuts, not geoengineering: Commentary
WMKY - Officials urge Kentucky state legislature to pass an act to prohibit geoengineering
SRM360 - No, Polar Geoengineering Has Not Been Debunked
New World Journal - Securing the ‘great white shield’? Climate change, Arctic security and the geopolitics of solar geoengineering
Public News Service - Scientists discuss solutions at New York City Climate Week
News24 - Can geoengineering save us from a climate catastrophe?
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Nuffield Council on Bioethics - Nuffield Council on Bioethics begin work to explore the ethical considerations and health-related impacts of Solar Radiation Management
The Nuffield Council on Bioethics is launching a project to identify the ethical considerations associated with Solar Radiation Management and make recommendations for the governance of research and development.
Reflective - Uncertainty Database for Stratospheric Aerosol Injection (SAI) | Deadline to submit inputs: 15 October 2025
Communications & Engagement Lead: Future Proofing our Climate & Weather at ARIA | Deadline: 30 September 2025 with possible extension
“Rising global temperatures increase the likelihood of crossing climate tipping points – abrupt and potentially irreversible shifts in the Earth’s climate system. While decarbonisation is the only sustainable way to reduce the risk of triggering these events in the long term, our current warming trajectory already makes a number of tipping points distinctly possible over the next century.
The Future Proofing our Climate and Weather opportunity space (and the Exploring Climate Cooling programme that sits within that opportunity space) is exploring whether ethical and governable interventions to prevent tipping points, or adaptations to adjust to a post tipping point climate, could be possible, by funding research to answer critical questions on how such approaches could work and what their regional and global effects might be.”
Why is everyone talking about geoengineering? | Professor Dame Jane Francis | Beyond the Ice
 | 11: Why is everyone talking about geoengineering? | Professor Dame Jane Francis Beyond the Ice 23:11 |
“Geoengineering is the hot topic in climate science debate - drawing increasingly emotive and divisive responses, as investment in blue-sky engineering proposals grows and progress on decarbonisation stutters.
Geoengineering is the deliberate, large scale intervention in Earth’s environment and natural systems. As the impacts of climate change start to be felt, preliminary ideas like putting a huge underwater curtain around the unstable Thwaites Glacier are getting more and more media time. Are these necessary tools for climate adaption, or dangerous distractions?
Professor Dame Jane Francis, Director of British Antarctic Survey, delves into the reality of why we are turning towards geoengineering tools, and the urgent need for scientific engagement to ensure the potential impacts of these technologies are fully assessed.”
Solar Geoengineering Research: Next Steps for Civil Society | Chesapeake Climate Action Network
How And Why Dutch Start up Arctic Reflections Aims To Thicken 100,000km2 Of Arctic Ice | Arctic Reflections
“Join us on one of the most crucial missions to combat the rapid melting of Arctic ice. This ambitious project, as bold as it sounds, holds incredible promise. Dutch Startup “Arctic Reflections” aims to reinforce Arctic sea ice by pumping seawater onto it during winter. Dive into the details and discover how this innovative approach could significantly impact.”“
HCI Short Film | Healthy Climate Initiative
“A changing climate threatens our coasts, forests, and future—but there is hope. The Healthy Climate Initiative: Regenerating Our Future is a short film that tells the story of scientists, communities, and young leaders working together to cool the planet, restore ecosystems, and inspire collective action. From reforestation in rural villages to workshops at leading universities, HCI is building a movement for a safe and thriving future. Join us in regenerating our planet.”
Solar Radiation Modification Seminar | Instituto Clima e Sociedade
“Seminar promoted by the Ministry of Science, Technology, and Innovation (MCTI) with the support of the Climate and Society Institute (iCS), bringing together national and international researchers to discuss one of the most sensitive areas of climate science: geoengineering.”
2025 Hancock Symposium-Hassaan Sipra ‘10: “Intervening in the Sky” | Westminster College
“Hassaan Sipra, Class of 2010, is a former consultant and senior researcher from COMSATS University Islamabad, Pakistan. He has worked in the climate, sustainability, environmental research, and policy domains in several developing countries. Beyond his engagement work on solar geoengineering for the Alliance for Just Deliberation on Solar Geoengineering (DSG), Sipra has been or currently is a team member on several grants-based research projects through the Resources for the Future, the Harvard Global Empowerment Meeting Incubation Fund, The Degrees Initiative, the World Health Organization, and UK Advanced Research and Invention Agency.”
30 September | Belgium - Grappling with accelerating climate risks - Is it time to explore research into Solar Radiation Modification? by Euractive
30 September | Online - Making sense of sea ice and solar geoengineering by SRM360
Saturdays 04 October - 22 November 22 | Online & In-person - An Intro to Climate Systems Engineering by Members of the Climate Systems Engineering Initiative (including David Keith, Tiffany Shaw, and B.B. Cael)
05 October | Online - Denial to Disaster: The Consequences of Ignoring Climate Science by MEER
6 – 9 October | Online - Virtual workshop series on Stratospheric Aerosol Injection
09 October | United States - Geoengineering, Global Warming & Sunlight Reflection Methods by Manny’s
15-16 October | Online - Conference: The Global Heating Emergency Preventing 2°C by 2040: What’s the Plan? by Healthy Planet Action Coalition
17 October - Introducing SkyScroll by Planetary Sunshade Foundation
21-22 October | Helsinki, Finland - Workshop: The Future of climate intervention research - an early career gathering by Alliance for Just Deliberation on Solar Geoengineering
23 October | Helsinki - ATLAS25: Risk Management of Earth System Tipping Points by Operaatio Arktis
3-7 November | Pune, India - 11th WMO Scientific Conference on Weather Modification
15-19 December | New Orleans, Louisiana - 2025 American Geophysical Union Meeting
9-13 March 2026 | Kyoto, Japan - CMIP Community Workshop (CMIP26)
21-26 June 2026 | United States - Gordon Research Conference - Bridging Observations, Models, and Impacts in Solar Radiation Modification Research
Solar Geoengineering Events Calendar
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