Separating the impact of gradual lockdown measures on air pollutants from seasonal variability

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...

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Detalles Bibliográficos
Autores principales: Hörmann, Siegfried, Jammoul, Fatima, Kuenzer, Thomas, Stadlober, Ernst
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Turkish National Committee for Air Pollution Research and Control. Production and hosting by Elsevier B.V. 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7605804/
https://www.ncbi.nlm.nih.gov/pubmed/33162774
http://dx.doi.org/10.1016/j.apr.2020.10.011
Descripción
Sumario: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 (NO(2)) has decreased drastically while the levels of particulate matter PM(10) 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 NO(2) and NO.

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