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Tropospheric ozone production and chemical regime analysis during the COVID-19 lockdown over Europe
Abstract. The COVID-19 (Coronavirus disease 2019) European lockdowns have lead to a significant reduction in the emissions of primary pollutants such as NO (nitric oxide) and NO2 (nitrogen dioxide). As most photochemical processes are related to nitrogen oxide (NOx ≡ NO + NO2) chemistry, this event has presented an exceptional opportunity to investigate its effects on air quality and secondary pollutants, such as tropospheric ozone (O3). In this study, we present the effects of the COVID-19doi:10.5194/acp-2021-1028 fatcat:egmbln3ainakdmfwmaqswuqmda