Introduction As part of the "Urban Climate Under Change [UC²]" project supported by the Federal Ministry of Education and Research (BMBF) Germany, extensive research in the field of urban climatology was carried out over a period of six years from 2016 to 2022 by a large number of research groups. The department of Flue Gas Cleaning and Air Quality Control (RuL) at the University of Stuttgart was among them. The results presented here, were gained by RuL research group. Methodology During the investigations, a monitoring station was operated for measuring meteorological parameters and air pollution since 2016 at a central square in the city center, affected by a heavy traffic road. As part of recurring intensive measurement campaigns, mobile measurements using a bicycle were carried out to record the spatial distribution of air pollution within the city area. To determine the vertical distribution of measurement parameters, a tethered balloon and a measurement drone were used. In addition, low-cost PM and gas sensors were tested and deployed to record the air pollutant concentrations.

{"references": ["https://doi.org/10.3390/atmos13050663", "https://doi.org/10.1016/j.atmosenv.2020.117915", "https://doi.org/10.15341/mese(2333-2581)/05.06.2020/002", "https://doi.org/10.1016/j.uclim.2020.100650", "https://doi.org/10.1127/metz/2019/0911"]}