Nitrogen dioxide concentrations observed over major European cities

Nitrogen dioxide concentrations observed over major European cities

This graph shows the averaged nitrogen dioxide concentrations over five major European cities. The upper panel shows concentrations (using a 14-day moving average) in 2019 compared to 2020 using data from the Copernicus Sentinel-5P satellite, while the lower panel shows in situ observations.

contains modified Copernicus Sentinel data (2019-20), processed by KNMI/BIRA-IASB
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