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

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

Content Provider	MDPI
Author	Maria, Morales Suárez-Varela Donzelli, Gabriele Cioni, Lorenzo Cancellieri, Mariagrazia Morales, Agustin Llopis
Copyright Year	2020
Description	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.
Starting Page	1118
e-ISSN	20734433
DOI	10.3390/atmos11101118
Journal	Atmosphere
Issue Number	10
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2020-10-19
Access Restriction	Open
Subject Keyword	Atmosphere Water Science and Technology Covid-19 Lockdown Air Pollution Particulate Matter (pm) Nitrogen Dioxide Ozone
Content Type	Text
Resource Type	Article

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