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RESEARCH PAPER: Multi-Model Future World Aridity and Groundwater Recharge Changes With and Without Stratospheric Aerosol Intervention Under High Warming Scenario (AGU)
REPORT: Solar Geoengineering, Aviation and the Future of Climate Control (Simpliflying)
UPCOMING EVENT: Multistakeholder Workshop on Solar Radiation Modification - Online (UNEP)
JOB OPPORTUNITY: Research Associate at Climate Systems Engineering initiative (CSEi) (University of Chicago)
PERSPECTIVE: Cooling Isn’t Plan B – It’s How Plan A Succeeds (SRM360)
Read on to unpack more updates:
Africa's regional and local climate response to stratospheric aerosol injection characteristics
Authors: Naomi Kumi, Caleb Mensah, Kwesi A. Quagraine, Trisha D. Patel, Frederick Otu-Larbi, Nana Agyemang Prempeh, Mariam Nguvava, Tiro Nkemelang, Babatunde Abiodun, Chris Lennard, Mark New, Romaric C. Odoulami
Synopsis: This study uses GLENS SAI simulations under RCP8.5 to assess impacts on Africa’s climate. All SAI experiments cool the continent, with GLENS_eq most effective at reducing temperature extremes, especially in Central and Southern Africa. However, residual warming persists in the Sahel and North Africa. While SAI reduces flood risks by offsetting extreme rainfall, it also intensifies drying trends, threatening water and agriculture. Findings reveal regional trade-offs, stressing the need for optimized strategies.
Evaluating the impacts of localized artificial enhancement of sea ice albedo over Beaufort Gyre towards restoring Arctic Sea Ice
Authors: Detelina Ivanova, Subarna Bhattacharyya, Anthony Strawa, Steve Zornetzer, Stephanie Olinger, Leslie Field, Alexander Ivanov, Ethan Kusnadi, Jacob Kim
Synopsis: This study tests targeted surface albedo modification (SAM) in the Beaufort Gyre using CESM2 simulations (2000–2050). Results show that enhancing albedo by ~50% lowers absorbed radiation by ~5 W/m², cools the Arctic by ~0.78 °C (BG by ~3 °C), and thickens summer sea ice by ~1 m. Findings suggest SAM could delay an ice-free Arctic, offering a potential interim climate intervention when emission cuts alone prove insufficient.
Multi-Model Future World Aridity and Groundwater Recharge Changes With and Without Stratospheric Aerosol Intervention Under High Warming Scenario
Authors: Abolfazl Rezaei, John Moore, Simone Tilmes, Daniele Visioni, Azfar Hussain
Synopsis: This study examines how SAI affects groundwater recharge (GWR) using six G6Sulfur models (2070–2099). SAI reduces global aridity (+25.4% → +9.1%) but fails to restore GWR (−7.7% → −7.6%) due to sustained evapotranspiration (+7–25%). Deficits persist in the Mediterranean, northern midlatitudes, southern Africa, and Brazil, with partial gains in India, the Sahel, and South America. Results reveal regionally uneven, model-dependent outcomes and highlight the influence of CO₂-physiological forcing.
Evaluating simulations of ship tracks in a high-resolution model - Preprint
Authors: Anna Tippett, Paul R. Field, and Edward Gryspeerdt
Synopsis: This study models ship tracks as analogues for MCB and compares results with satellite data. While models reproduce mean cloud properties, they fail to capture temporal evolution. In precipitating clouds, droplet number (Nd) and liquid water path (LWP) are overestimated, with drizzle suppression persisting unrealistically. This reflects excessive sensitivity to aerosol loading, leading to an overestimated cooling effect. Findings show current parameterisations are unsuitable for high-aerosol MCB scenarios.
Experimental Insights On Collective Action Dilemmas: Social Comparison, Present Bias, And Coordination
Authors: Pablo David Campoverde Varela
Synopsis: This dissertation explores collective action challenges in climate mitigation using behavioral models and experiments. Chapter 1 shows that under positional concerns, contributions fall when efforts exceed peer norms. Chapter 2 compares present bias in solar geoengineering decisions, revealing different responses between free drivers and planners. Chapter 3 applies game theory, showing geoengineering as insurance lowers coordination costs but weakens incentives. Overall, findings highlight how fairness, time preferences, and strategic uncertainty shape climate decisions.
Simpliflying - Solar Geoengineering, Aviation and the Future of Climate Control
Synopsis: This explainer breaks down solar geoengineering, from volcanic models to stratospheric aerosol injection, an examines aviation role in climate intervention.
Dialogue Earth - Explainer: Could making ocean clouds shinier cool the planet?
PIB - High-Level Workshop by CSEP-NITI Aayog-CEEW Highlights Need for India to Evaluate Research, Risks, and Governance of Geoengineering
SRM360 - Cooling Isn’t Plan B – It’s How Plan A Succeeds
Research Associate at Climate Systems Engineering initiative (CSEi) | University of Chicago
"The CSEi Postdoctoral Researchers Program seeks outstanding early-career scholars from across disciplines who are eager to advance understanding of the benefits, risks, and governance of technologies that might reduce the impacts of accumulated greenhouse gases. Areas of focus include sunlight reflection methods (SRM), open-systems carbon removal, local interventions to prevent glacial melt, as well as the social, ethical, and policy dimensions of these technologies."
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04-05 September | Washington DC - 2025 RFF and Harvard SRM Social Science Research Workshop: Governance in a Fractured World
07 September | Online - Confessions of a Climate Activist: Clean Energy Alone Can No Longer Save Us. We Need to Study Sunlight Reflection by MEER
09-10 September | Online - Multi-stakeholder Workshop on Solar Radiation Modification by UNEP (NEW)
21-28 September | New York - Climate Week NYC by Climate Group (NEW)
23 September | NYC, United States - The state of SRM impacts science and the need for responsible research by EDF at Climate Week NYC
24 September 2025 | New York - Solar Geoengineering Research: Next Steps for Civil Society by DSG CCAN (NEW)
30 September | Belgium - Grappling with accelerating climate risks - Is it time to explore research into Solar Radiation Modification? by Euractive
6 – 9 October | Online - Virtual workshop series on Stratospheric Aerosol Injection
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 (NEW)
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
Making Sense of Wildfires and Solar Geoengineering | SRM360
"An expert panel featuring Dr. Patrick Brown, Dr. Danielle Touma, Dr. Brian Buma, and Dr. Lili Xia discuss:
– How climate change is contributing to wildfires
– The impacts of wildfires and the potential to adapt to them
– Whether solar geoengineering could reduce wildfire risk
– Broader challenges and considerations raised by solar geoengineering."
Francis Nkrumah, SRI (2024) | Operaatio Arktis
"We participated in the world's largest sustainability conference by organising two workshops on climate interventions.
Among these workshops we had a pleasure of hosting a key note speech by Francis Nkrumah at our office after the conference.
Francis Nkrumah is a lecturer and a research scientist in the Department of Physics, at the University of Cape Coast, Ghana. His current project is Solar Radiation Modification (Stratospheric Aerosol Injection)."
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