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Article

The Effect of the Covid-19 Lockdown on Air Quality in Three Italian Medium-Sized Cities

1
Department of Preventive Medicine and Public Health, Food Sciences, Toxicology, and Legal Medicine, School of Pharmacy, University of Valencia, Avenida Vicente Andres Estellés s/n, Burjassot, 46100 Valencia, Spain
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Department of Health Sciences, University of Florence, Viale GB Morgagni 48, 50134 Florence, Italy
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Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
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Hygiene and Public Health Unit, Department of Public Health, AUSL Imola, 40026 Bologna, Italy
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Biomedical Research Consortium in Epidemiology and Public Health Network (CIBERESP), Avenida Monforte de Lemos, 3-5. Pabellón 11. Planta 0, 28029 Madrid, Spain
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(10), 1118; https://doi.org/10.3390/atmos11101118
Received: 15 September 2020 / Revised: 13 October 2020 / Accepted: 16 October 2020 / Published: 19 October 2020
(This article belongs to the Section Air Quality)
Despite the societal and economic impacts of the COVID-19 pandemic, the lockdown measures put in place by the Italian government provided an unprecedented opportunity to increase our knowledge of the effect transportation and industry-related emissions have on the air quality in our cities. This study assessed the effect of reduced emissions during the lockdown period, due to COVID-19, on air quality in three Italian cities, Florence, Pisa, and Lucca. For this study, we compared the concentration of particulate matter PM10, PM2.5, NO2, and O3 measured during the lockdown period, with values obtained in the same period of 2019. Our results show no evidence of a direct relationship between the lockdown measures implemented and PM reduction in urban centers, except in areas with heavy traffic. Consistent with recently published studies, we did, however, observe a significant decrease in NO2 concentrations among all the air-monitoring stations for each city in this study. Finally, O3 levels remained unchanged during the lockdown period. Of note, there were slight variations in the meteorological conditions for the same periods of different years. Our results suggest a need for further studies on the impact of vehicular traffic and industrial activities on PM air pollution, including adopting holistic source-control measures for improved air quality in urban environments. View Full-Text
Keywords: Covid-19; lockdown; air pollution; particulate matter (PM); nitrogen dioxide; ozone Covid-19; lockdown; air pollution; particulate matter (PM); nitrogen dioxide; ozone
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MDPI and ACS Style

Donzelli, G.; Cioni, L.; Cancellieri, M.; Llopis Morales, A.; Morales Suárez-Varela, M.M. The Effect of the Covid-19 Lockdown on Air Quality in Three Italian Medium-Sized Cities. Atmosphere 2020, 11, 1118. https://doi.org/10.3390/atmos11101118

AMA Style

Donzelli G, Cioni L, Cancellieri M, Llopis Morales A, Morales Suárez-Varela MM. The Effect of the Covid-19 Lockdown on Air Quality in Three Italian Medium-Sized Cities. Atmosphere. 2020; 11(10):1118. https://doi.org/10.3390/atmos11101118

Chicago/Turabian Style

Donzelli, Gabriele, Lorenzo Cioni, Mariagrazia Cancellieri, Agustin Llopis Morales, and Maria M. Morales Suárez-Varela 2020. "The Effect of the Covid-19 Lockdown on Air Quality in Three Italian Medium-Sized Cities" Atmosphere 11, no. 10: 1118. https://doi.org/10.3390/atmos11101118

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