CMIP7 historical stratospheric aerosol optical properties and stratospheric volcanic sulfur emissions: version 2.2.1 dataset and preliminary documentation

The dataset is version 2.2.1 of the historical stratospheric aerosol datasets provided by the CMIP Climate Forcing Task Team for Phase 7 of the Coupled Model Intercomparison Project (CMIP7). Version 2.2.1 is the final version recommended for use in CMIP7 Assesment Fast Track simulations unless it gets retracted; no additional update will be provided for Assesment Fast Track. The accompanying succint documentation provides top-level information on how the dataset was made, and detailed documentation papers will be submitted for open peer review during summer 2025.