This repository contains the data products and codes associated with the study by Rosu et al., "Large-scale modelled impacts of the 2025 Canadian wildfires". In support of the State of Wildfires 2025-26 report, in this work, we investigate the large-scale atmospheric effects of the 2025 Canadian wildfire season using EC-Earth3 Earth System Model (EC-Earth3-AerChem configuration, FORCes branch [1-2]). Two sets of simulations (with 10 members each) are included: one accounting for wildfire emissions (CF) and one without them (CN). Wildfire emissions are based on the GFAS dataset (Kaiser et al. [3-4]), while natural and anthropogenic emissions follow van Noije et al. [2,5]. For a more detailed description of the methodology used, refer to Rosu et al., “Large-scale modelled impacts of the 2025 Canadian wildfires”. Further details on the data products included in the current repository are in README.txt. References [1] Döscher et al. (2022) The EC-Earth3 Earth system model for the Coupled Model Intercomparison Project 6. Geosci Model Dev 15:2973–3020. https://doi.org/10.5194/gmd-15-2973-2022 [2] van Noije et al. (2021) EC-Earth3-AerChem: a global climate model with interactive aerosols and atmospheric chemistry participating in CMIP6. Geosci Model Dev 14:5637–5668. https://doi.org/10.5194/gmd-14-5637-2021 [3] Kaiser et al. (2012) Biomass burning emissions estimated with a global fire assimilation system based on observed fire radiative power. Biogeosciences 9:527–554. https://doi.org/10.5194/bg-9-527-2012 [4] Copernicus Atmosphere Monitoring Service. CAMS Global Fire Assimilation System (GFAS) [Dataset]. ECMWF. https://doi.org/10.24381/a05253c7 [5] EC-Earth Consortium (EC-Earth) (2020). EC-Earth-Consortium EC-Earth3-AerChem model output prepared for CMIP6 ScenarioMIP ssp370. Earth System Grid Federation. https://doi.org/10.22033/ESGF/CMIP6.4885