P. Heckendorn coauthored coupled aerosol and chemistry-climate simulations of stratospheric aerosol injection. The study examines effects on stratospheric temperature and ozone, rather than treating injected mass as a fixed amount of cooling.
Particle growth changes scattering and settling, while temperature and chemical changes affect ozone. These coupled responses explain why aerosol amount alone does not determine the climatic outcome.[ref]
The impact of geoengineering aerosols on stratospheric temperature and ozone by P. Heckendorn and others. Research topic and author attribution in the primary publication
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