Enhancing global SO2 emission inventories using Sentinel-5P TROPOMI satellite data

We report a newly developed global anthropogenic SO2 emission inventory. Within this study, SO2 measurements from the Tropospheric Monitoring Instrument (TROPOMI) onboard the Sentinel-5P satellite have been used to detect and quantify SO2 emissions from point sources for the time range 2018-2022. Our algorithm derives the advection of SO2 by combining TROPOMI SO2 column densities and wind fields from ERA5, i.e. taking the product of vertical column densities and the horizontally projected wind speed. In addition, several corrections, e.g., for satellite sensitivity and topography are applied. The results will be compared to existing emission datasets.The study is part of the World Emission project funded by ESA and the complete SO2 emission inventory will be available via the World Emission Portal at https://app.world-emission.com.