EMS Annual Meeting Abstracts
Vol. 18, EMS2021-431, 2021
EMS Annual Meeting 2021
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Association between COVID-19 lockdown policies and air pollution with associated mortality reduction in Europe

Rochelle Schneider1,2,3, Pierre Masselot1, Ana Maria Vicedo-Cabrera4, Francesco Sera1,5, Marta Blangiardo6, Chiara Forlani6, John Douros7, Oriol Jorba8, Mario Adani9, Rostislav Kouznetsov10,11, Florian Couvidat12, Joaquim Arteta13, Blandine Raux12, Marc Guevara8, Augustin Colette12, Jérôme Barré3, Vincent-Henri Peuch3, and Antonio Gasparrini1
Rochelle Schneider et al.
  • 1London School of Hygiene & Tropical Medicine, London, UK (pierre.masselot@lshtm.ac.uk)
  • 2European Space Agency, Frascati, Italy
  • 3European Centre for Medium Range Weather Forecast, Reading, UK
  • 4University of Bern, Bern, Switzerland
  • 5University of Florence, Florence, Italy
  • 6Imperial College London, London, UK
  • 7Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands
  • 8Barcelona Supercomputing Centre, Barcelona, Spain
  • 9Italian National Agency for New Technologies, Bologna, Italy
  • 10Finnish Meteorological Institute, Helsinki, Finland
  • 11A.M. Obukhov Institute for Atmospheric Physics (IAPh), Moscow, Russia
  • 12National Institute for Industrial Environment and Risks (INERIS), Verneuil-en-Halatte, France
  • 13National Center for Meteorological Research (CNRM), Toulouse, France

Governments were enforced to respond to SARS-CoV-2 virus spread by taking a wide range of policy measures. Several studies have reported a decrease in air pollution following the enforcement of lockdown measures during the first wave of the COVID-19 pandemic. However, these investigations were mostly based on simple pre-post comparisons using past years as a reference, and did not assess the role of different policy interventions. These responses offered an unprecedented opportunity to assess the effectiveness of several interventions to reduce air pollution levels worldwide. Using an accurate representation of business-as-usual and lockdown air pollution scenarios, provided by Copernicus Atmosphere Monitoring Service (CAMS), we quantitatively evaluated the association between policies responses to the COVID-19 pandemic with changes in NO2, O3, PM2.5, and PM10 levels in 47 European cities. We also estimated the short-term mortality in the period of February-July 2020. An advanced spatio-temporal Bayesian non-linear mixed effect model was performed to determine the association between air pollutant levels and stringency indices as well as individual policy measures. The results indicate non-linear relationships, with a stronger decrease in NO2 and to a lesser extent PM10 and PM2.5 at very strict policy levels. Differences across interventions were also identified, actions linked to school/workplace closure, limitations on gatherings, and stay-at-home requirements had strong effects, while restrictions on internal movement and international travels showed little impact. The observed decrease in pollution potentially resulted in hundreds of avoided deaths across the European cities. This project provides information that can help inform future policies on air pollution reduction.

How to cite: Schneider, R., Masselot, P., Vicedo-Cabrera, A. M., Sera, F., Blangiardo, M., Forlani, C., Douros, J., Jorba, O., Adani, M., Kouznetsov, R., Couvidat, F., Arteta, J., Raux, B., Guevara, M., Colette, A., Barré, J., Peuch, V.-H., and Gasparrini, A.: Association between COVID-19 lockdown policies and air pollution with associated mortality reduction in Europe, EMS Annual Meeting 2021, online, 6–10 Sep 2021, EMS2021-431, https://doi.org/10.5194/ems2021-431, 2021.

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