Faculty of Civil and Geodetic Engineering, Ljubljana (FGGLJ)
13.
Onesnaženost zunanjega zraka z delci PM10 in PM2,5 v času pandemije COVID-19 v letu 2020 v Sloveniji = PM10 and PM2.5 emission trend in the atmosphere during the COVID-19 pandemic in year 2020 in the area of Slovenia [Elektronski vir]
Dolšak Lavrič, Petra ; Kukec, Andreja, 1982- ; Ivanovski, Maja
Scientific literature report temporarily improved air quality in urban areas, due to the COVID-19 countermeasures, accepted to curb the spread of the SARS-CoV-2 virus. This study investigates ...predominantly the changes in concentration levels of air pollutants (PM10 and PM2.5) in the Republic of Slovenia during the year 2020, which was marked by COVID-19 lockdowns. In this study, the data for the year 2020 were divided into four periods, i.e. the period before COVID-19 (1 January–11 March 2020), the first lockdown (12 March–31 May 2020), after the first lockdown (1 June–17 October 2020), and the second lockdown (18 October–31 December 2020). The data were obtained from 25 ground-based nationwide stations, subdivided further by traffic and background sites. For comparison, data from 2018 and 2019 were evaluated as well. The impact of meteorological conditions on the concentration levels was studied in addition. Our findings indicate that COVID-19 restrictions had a moderate and indirect impact on PM10 and PM2.5 concentrations, which were more evident at PM10 monitoring sites near traffic locations. The most significant decrease of PM was found during the first lockdown. The decrease of concentrations was also recognized in the period after the first lockdown, which could be the results of fewer transit vehicles. The strength of this study is an assessment of the measurement data from 25 locations and analyses a year-long period including their comparison with previous years.
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