Top-down NOX Emissions of European Cities Derived from Modelled and Spaceborne Tropospheric NO2 Columns

Willem W Verstraeten1, Klaas Folkert Boersma2, John Douros2, Jason Ryan Williams3, Henk Eskes4 and Andy W Delcloo5, (1)Royal Meteorological Institute, Observations, Dourbes, Belgium, (2)Royal Netherlands Meteorological Institute, Space Observations, De Bilt, Netherlands, (3)Royal Netherlands Meteorological Institute, Earth Observations, De Bilt, Netherlands, (4)Royal Netherlands Meteorological Institute, De Bilt, Netherlands, (5)Royal Meteorological Institute, Observations, Ukkel, Belgium