The video presents concentration maps of black carbon over the city of Modena during the winters of 2020 and 2021. The concentrations are categorized into fossil fuel, biomass burning, and their combined totals. This supplementary material supports the paper titled "Measurement report: Source attribution and estimation of black carbon levels in an urban hotspot of the central Po Valley: An integrated approach combining high-resolution dispersion modelling and micro-aethalometers", published in the EGU interactive community platform.