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COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil
Open accessAbstract
In early March 2020, the World Health Organization declared the COVID-19 as a pandemic, and in late March 2020 partial lockdown was ordered by the São Paulo state government. The aim of this study was to assess impacts on air quality in São Paulo – Brazil, during the partial lockdown implemented to provide social distancing required due to the COVID-19 pandemic. We have analyzed data from four air quality stations in São Paulo, Brazil to assess air pollutant concentration variations during the partial lockdown. Data were compared to the five-year monthly mean and to the four-week before the partial lockdown. Overall, drastic reductions on NO (up to −77.3%), NO2 (up to −54.3%), and CO (up to −64.8%) concentrations were observed in the urban area during partial lockdown compared to the five-year monthly mean. By contrast, an increase of approximately 30% in ozone concentrations was observed in urban areas highly influenced by vehicle traffic, probably related to nitrogen monoxide decreases. Although the partial lockdown has contributed to a positive impact on air quality, it is important to take into account the negative impacts on social aspects, considering the deaths caused by COVID-19 and also the dramatic economic effects.
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Metadata
- Authors
- Nakada, L. Y. K., & Urban, R. C.
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2020-08
- Volume
- 730
- Pages
- 139087
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W3018697538
- Cited by
- 656
- References
- 5
- FWCI
- 53.10
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Nakada, L. Y. K., & Urban, R. C. (2020). COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil. Science of The Total Environment. https://doi.org/10.1016/j.scitotenv.2020.139087
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