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Explore a 30-minute lecture examining the potential of solid particles as alternatives to sulfate aerosols for stratospheric solar geoengineering. The presentation details research findings on alumina, calcite, and diamond particles for stratospheric aerosol injection (SAI), highlighting their reduced stratospheric heating and Arctic residual warming compared to sulfate-based approaches. Learn about climate modeling results showing diamond as the most effective material for mitigating global warming, while discovering experimental chemistry insights on how calcite particles interact with stratospheric acids. The talk covers how uptake coefficients of HCl and HNO3 on calcite decrease over time due to reaction product layers, potentially reducing impacts on stratospheric ozone. The lecture also previews upcoming research directions including alumina particle experiments and a multi-model intercomparison activity focused on solid particle SAI.
