The Road toward Process-Level Understanding of Solar Geoengineering through a Multimodel Intercomparison

Abstract

A primary aim of this meeting was to discuss the latest round of GeoMIP simulations that have recently been completed for phase 6 of the Coupled Model Intercomparison Project (CMIP6). These simulations include an idealized solar dimming experiment that offsets the warming from an abrupt CO2 increase, as well as two experiments based on the Shared Socioeconomic Pathway (SSP) scenarios, one involving solar dimming and one involving stratospheric sulfate aerosols. Two central questions are how well we understand model response to solar dimming and how well solar dimming can serve as a useful proxy for stratospheric sulfate aerosols.