Articles | Volume 21, issue 24
Atmos. Chem. Phys., 21, 18303–18317, 2021
https://doi.org/10.5194/acp-21-18303-2021

Special issue: Quantifying the impacts of stay-at-home policies on atmospheric...

Atmos. Chem. Phys., 21, 18303–18317, 2021
https://doi.org/10.5194/acp-21-18303-2021

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 et al.

Data sets

ERA5: data documentation-CDS dataset documentation European Centre for Medium-Range Weather Forecasts https://confluence.ecmwf.int/display/CKB/ERA5

Sentinal-5P Pre-Operations Data Hub European Space Agency https://s5phub.copernicus.eu

SOAZ Florence Goutail http://saoz.obs.uvsq.fr/

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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.
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