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The impact of COVID-19 confinement measures in the Air Quality in an urban-industrial zone in Portugal
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Orientador(es)
Resumo(s)
This work aims to evaluate the temporal evolution of the concentrations of
pollutants PM10, NO2 and O3, from 2001 to 2020, and to evaluate the impact
of the COVID-19 pandemic on the levels of these atmospheric pollutants, in
an urban-industrial zone (Paio Pires-Seixal, Portugal). The results showed
that a significant improvement in air quality resulted from the large restriction
of anthropogenic activities that occurred due to the pandemic, namely the
March-May 2020 lockdown. The mean concentrations of PM10, NO2 and O3
in 2020 were compared with the average concentrations measured from 2014
to 2019. The most expressive reduction in NO2 (-43.9%, p=0.000) was found
in April 2020, when a very expressive PM10 reduction was also registered (-
40.0%, p=0.000) and significant reductions of both pollutants were found in
the months thereafter.
Descrição
Comunicação oral apresentada em 25th International Clean Air and Environment Conference CASANZ 2021, 17-21 de maio 2021, online
Palavras-chave
Air Quality Urban-industrial COVID-19 confinement