https://acp.copernicus.org/articles/23/163/2023/
*Authors* John T. Fasullo <https://orcid.org/0000-0003-1216-892X> and Jadwiga H. Richter *5 January 2023 * *https://doi.org/10.5194/acp-23-163-2023 <https://doi.org/10.5194/acp-23-163-2023>* *Abstract* Model dependence in simulated responses to *stratospheric aerosol injection (SAI) is a major uncertainty surrounding the potential implementation of this solar climate intervention strategy.* We identify and aim to understand the drivers of large differences in the aerosol mass latitudinal distributions between two recently produced climate model SAI large ensembles using two models from the same modeling center despite using similar climate targets and controller algorithms. Using a hierarchy of recently produced simulations, we identify three main contributors to the differences including (1) the rapid adjustment of clouds and rainfall to elevated levels of carbon dioxide, (2) the low-frequency dynamical responses in the Atlantic meridional overturning circulation, and (3) the contrasts in future background forcing scenarios. Each uncertainty is unlikely to be significantly narrowed over the likely timeframe of a potential SAI deployment if a 1.5 ∘C target of global warming over preindustrial conditions is to be met. *Source: European Geosciences Union* -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CAOyeF5vR1ykJ3Tt7sbQ9cfoGoBbD__PdwonK9ZppdjC5AumE7g%40mail.gmail.com.
