NO2 emission change in select European cities during COVID-19 lockdown 2020

Due to the outbreak of the coronavirus (COVID-19), many countries around the world were put into lockdown. This resulted in cities coming to a virtual standstill with bans imposed on travel, which in turn lead to reduced pollution from vehicles. During the period of March to April 2020, the French capital Paris saw nitrogen dioxide emissions reduce by an estimated 54 percent when compared to the same period in 2019. Milan, Rome and Madrid saw similar reductions

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