Articles | Volume 21, issue 24
Research article
17 Dec 2021
Research article |  | 17 Dec 2021

Impact of the COVID-19 pandemic related to lockdown measures on tropospheric NO2 columns over Île-de-France

Andrea Pazmiño, Matthias Beekmann, Florence Goutail, Dmitry Ionov, Ariane Bazureau, Manuel Nunes-Pinharanda, Alain Hauchecorne, and Sophie Godin-Beekmann

Data sets

ERA5: data documentation-CDS dataset documentation European Centre for Medium-Range Weather Forecasts

Sentinal-5P Pre-Operations Data Hub European Space Agency

SOAZ Florence Goutail

Short summary
UV-Visible Système d'Analyse par Observations Zénithales (SAOZ) NO2 tropospheric columns were evaluated to quantify the impact of the lockdown in limiting the COVID-19 propagation. Meteorological conditions and NO2 trends were considered. The negative anomaly in tropospheric columns in 2020, attributed to the lockdown (17 March–10 May and related emissions reductions), was 56 % at Paris and 46 % at a suburban site. A similar anomaly was found in the Airparif data of surface concentrations.
Final-revised paper