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This research aims to investigate the chemical and dynamical effects of stratospheric aerosol injection on climate and ozone levels.

Middle atmosphere chemical and dynamical effects in the CCMI-2022 stratospheric aerosol injection scenario

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This research aims to investigate the chemical and dynamical effects of stratospheric aerosol injection on climate and ozone levels.
Analyzed simulations from the Chemistry-Climate Model Initiative Phase 2 (CCMI-2022) for 2025–2099 using five chemistry-climate models.
Applied a common stratospheric aerosol forcing in a moderate greenhouse gas emission scenario.
Separated chemical and dynamical contributions to ozone changes in three models.
Global total column ozone decreases by at most ∼10 DU during the first three decades compared to a no-SAI case.
Tropical lower stratospheric heating varies up to 4 K across models, but key process regions are consistently influenced by SAI.
Dynamical effects dominate ozone anomalies towards the end of the century, except in the lower polar stratosphere where heterogeneous chemistry is significant.

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Randomized trial evaluates impacts of stratospheric aerosol injection on ozone and temperatures, indicating significant dynamical contributions.

Jörimann et al. (2026) studied this question.

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Randomized trial evaluates impacts of stratospheric aerosol injection on ozone and temperatures, indicating significant dynamical contributions.