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Separating the impact of gradual lockdown measures on air pollutants from seasonal variability.
Hörmann, Siegfried; Jammoul, Fatima; Kuenzer, Thomas; Stadlober, Ernst.
  • Hörmann S; Institute of Statistics, Graz University of Technology, Kopernikusgasse 24/III, 8010, Graz, Austria.
  • Jammoul F; Institute of Statistics, Graz University of Technology, Kopernikusgasse 24/III, 8010, Graz, Austria.
  • Kuenzer T; Institute of Statistics, Graz University of Technology, Kopernikusgasse 24/III, 8010, Graz, Austria.
  • Stadlober E; Institute of Statistics, Graz University of Technology, Kopernikusgasse 24/III, 8010, Graz, Austria.
Atmos Pollut Res ; 12(2): 84-92, 2021 Feb.
Article in English | MEDLINE | ID: covidwho-1064815
ABSTRACT
Analysis of near-surface measurements at several measuring points in Graz, Austria, reveals the impact of restrictive measures during the COVID-19 pandemic on the emission of atmospheric pollutants. We quantify the effects at traffic hotspots, industrial and residential areas. Using historical data collected over several years, we are able to account for meteorological and seasonal confounders. Our analysis is based on daily means as well as intraday pollution level curves. Nitrogen dioxide (NO2) has decreased drastically while the levels of particulate matter PM10 and carbon monoxide (CO) mostly exhibit little change. Traffic data shows that the decrease in traffic frequency is parallel to the decline in the levels of NO2 and NO.
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Full text: Available Collection: International databases Database: MEDLINE Type of study: Experimental Studies Language: English Journal: Atmos Pollut Res Year: 2021 Document Type: Article Affiliation country: J.apr.2020.10.011

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Full text: Available Collection: International databases Database: MEDLINE Type of study: Experimental Studies Language: English Journal: Atmos Pollut Res Year: 2021 Document Type: Article Affiliation country: J.apr.2020.10.011