Articles | Volume 20, issue 24
https://doi.org/10.5194/acp-20-15725-2020
https://doi.org/10.5194/acp-20-15725-2020
Research article
 | 
17 Dec 2020
Research article |  | 17 Dec 2020

What can we learn about urban air quality with regard to the first outbreak of the COVID-19 pandemic? A case study from central Europe

Imre Salma, Máté Vörösmarty, András Zénó Gyöngyösi, Wanda Thén, and Tamás Weidinger

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Latest update: 28 Mar 2024
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Short summary
Motor vehicle road traffic in Budapest was reduced by approximately 50% of its ordinary level due to COVID-19. In parallel, concentrations of most criteria air pollutants declined by 30–60%. Change rates of NO and NO2 with relative change in traffic intensity were the largest, total particle number concentration showed considerable dependency, while particulate matter mass concentrations did not appear to be related to urban traffic. Concentrations of O3 showed an increasing tendency.
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