Rest days detected by OMI and TROPOMI: on the weekly cycle of NO2 columns over world’s largest cities

Maite Bauwens1, Trissevgeni Stavrakou1, Jean-Francois Muller1, Folkert Boersma2 and Jos van Geffen2, (1)Belgisch Instituut voor Ruimte-Aeronomie, Brussel, Belgium, (2)Royal Netherlands Meteorological Institute, De Bilt, Netherlands