Africa's Climate Response to Stratospheric Aerosol Injection Materials

Explore a 22-minute scientific presentation by Romaric C. Odoulami examining Africa's climate response to different stratospheric aerosol injection materials used in geoengineering. Learn about research using the SOCOLv4 model to simulate four different injection materials (sulfur, alumina, calcite, and diamond) following the G6sulfur experiment protocol from the Geoengineering Multi-model Intercomparison Project. Discover how these materials, when injected into the equatorial stratosphere under a high-emission pathway (SSP5-8.5), could potentially keep global warming levels similar to an intermediate emission pathway (SSP2-4.5). The talk analyzes end-of-century (2080-2099) temperature and precipitation changes across Africa, revealing that all materials demonstrate cooling potential, with maximum temperature decreases of up to 2°C and minimum temperature decreases of up to 4°C in equatorial regions, though residual warming persists in North Africa. Understand the complex precipitation impacts, which could reverse projected increases and lead to drier conditions across the continent, with alumina causing the largest decreases and diamond the slightest. This presentation is part of the Solar Radiation Management Annual Meeting 2025 hosted by the Simons Foundation.