Sentinel-5P (S-5P) is the first mission of the European Union’s Earth Observation Programme, Copernicus, dedicated to the monitoring of air quality, climate and ozone. The instrument on-board S5-P is the TROPOspheric Monitoring Instrument (TROPOMI) nadir-viewing spectrometer. The tropospheric nitrogen dioxide (NO2) product, with a spatial resolution of 3.5 x 7 km2 ...