This dataset is the supporting information for the article Osipov et. al., The role of the SO2 radiative effect in sustaining the volcanic winter and soothing the Toba impact on climate, Journal of Geophysical Research: Atmospheres, https://doi.org/10.1029/2019JD031726. It includes the model, rundecks, auxiliary information and other data necessary to reproduce the simulations described in the paper.