IPS - ESTS – DSI - Comunicações em congressos
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Browsing IPS - ESTS – DSI - Comunicações em congressos by Author "Abecassis, Leonor"
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- The impact of COVID-19 confinement measures in the Air Quality in an urban-industrial zone in PortugalPublication . Abecassis, Leonor; Gamelas ou Carla A. Gamelas, Carla; Canha, Nuno; Almeida, Susana MartaThis 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.