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Impact of 2020 COVID-19 lockdowns on particulate air pollution across Europe
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SYSNO ASEP 0582339 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Impact of 2020 COVID-19 lockdowns on particulate air pollution across Europe Author(s) Putaud, J.-P. (IT)
Pisoni, E. (IT)
Mangold, A. (BE)
Hueglin, Ch. (CH)
Sciare, J. (CY)
Pikridas, M. (CY)
Savvides, Ch. (CY)
Ondráček, Jakub (UCHP-M) RID, ORCID, SAI
Mbengue, Saliou (UEK-B) SAI, RID, ORCID
Wiedensohler, A. (DE)
Weinhold, K. (DE)
Merkel, M. (DE)
Poulain, L. (DE)
van Pinxteren, D. (DE)
Herrmann, H. (DE)
Massling, A. (DK)
Nordstroem, C. (DK)
Alastuey, A. (ES)
Reche, C. (ES)
Pérez, N. (ES)
Castillo, S. (ES)
Sorribas, M. (ES)
Adame, J.A. (ES)
Petäja, T. (FI)
Lehtipalo, K. (FI)
Niemi, J. (FI)
Riffault, V. (FR)
De Brito, J.F. (FR)
Colette, A. (FR)
Favez, O. (FR)
Petit, J.-E. (FR)
Gros, V. (FR)
Gini, M.I. (GR)
Vratolis, S. (GR)
Eleftheriadis, K. (GR)
Diapouli, E. (GR)
van der Gon, H.D. (NL)
Yttri, K.E. (NO)
Aas, W. (NO)Source Title Atmospheric Chemistry and Physics. - : Copernicus - ISSN 1680-7316
Roč. 23, č. 17 (2023), s. 10145-10161Number of pages 17 s. Language eng - English Country DE - Germany Keywords atmospheric pollution ; concentration (composition) ; COVID-19 OECD category Meteorology and atmospheric sciences Method of publishing Open access Institutional support UCHP-M - RVO:67985858 ; UEK-B - RVO:86652079 UT WOS 001161830300001 EID SCOPUS 85172937221 DOI 10.5194/acp-23-10145-2023 Annotation To fight against the first wave of coronavirus disease 2019 (COVID-19) in 2020, lockdown measureswere implemented in most European countries. These lockdowns had well-documented effects on human mobility. We assessed the impact of the lockdown implementation and relaxation on air pollution by comparing daily particulate matter (PM), nitrogen dioxide (NO2) and ozone (O3) concentrations, as well as particle number size distributions (PNSDs) and particle light absorption coefficient in situ measurement data, with values that would have been expected if no COVID-19 epidemic had occurred at 28 sites across Europe for the period 17 February–31 May 2020. Expected PM, NO2 and O3 concentrations were calculated from the 2020 Copernicus Atmosphere
Monitoring Service (CAMS) ensemble forecasts, combined with 2019 CAMS ensemble forecasts and measurement data. On average, lockdown implementations did not lead to a decrease in PM2.5 mass concentrations aturban sites, while relaxations resulted in a +26 ± 21 % rebound. The impacts of lockdown implementation andrelaxation on NO2 concentrations were more consistent (−29 ± 17 and +31 ± 30 %, respectively). The implementation of the lockdown measures also induced statistically significant increases in O3 concentrations at half of all sites (+13 % on average). An enhanced oxidising capacity of the atmosphere could have boosted the production of secondary aerosol at those places. By comparison with 2017–2019 measurement data, a significant
change in the relative contributions of wood and fossil fuel burning to the concentration of black carbon during the lockdown was detected at 7 out of 14 sites. The contribution of particles smaller than 70 nm to the total number of particles significantly also changed at most of the urban sites, with a mean decrease of −7 ± 5 % coinciding with the lockdown implementation. Our study shows that the response of PM2.5 and PM10 mass concentrations to lockdown measures was not systematic at various sites across Europe for multiple reasons, the relationship between road traffic intensity and particulate air pollution being more complex than expected.Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2024 Electronic address https://acp.copernicus.org/articles/23/10145/2023/acp-23-10145-2023.pdf
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