The data are the netcdf outputs from ICON-ART simulations. Except for interpolation from native ICON grid to Cartesian coordinates, no post-processing has been applied. Meta data of the variables are contained within the files. For scenarios 'REF', 'SEED', and 'TRGT', output is available hourly for a 24 hours period. Output for sensitivity studies is available only for simulation hour 24 in files 'DIA<X>_<Y>...'. With <X> referring to seeding aerosol diameter and numbers <Y> referring to seeding aerosol peak number concentrations in ascending order.