ArticleUrban climate2021
Air pollution and COVID-19 lockdown in a large South American city: Santiago Metropolitan Area, Chile.
Article in Urban climate, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Counterintuitive PMInternational journal of environmental research and public health · 2026Article
- Changes in air pollution, land surface temperature, and urban heat islands during the COVID-19 lockdown in three Chinese urban agglomerations.The Science of the total environment · 2023Article
- Impact of COVID-19 restrictions on hourly levels of PM10, PM2.5 and black carbon at an industrial suburban site in northern Spain.Atmospheric environment (Oxford, England : 1994) · 2023Article
- Impact of mobility restrictions on NOUrban climate · 2023Article
- Human migration-based graph convolutional network for PM2.5 forecasting in post-COVID-19 pandemic age.Neural computing & applications · 2023Article
- COVID-19 impacts on mobility, environment, and health of active transportation users.Cities (London, England) · 2022Article
- Article
- Changes in air pollution due to COVID-19 lockdowns in 2020: Limited effect on NOJournal of global health · 2022Article
- Changes in cardiovascular mortality in Chile during the COVID-19 pandemic.Heart (British Cardiac Society) · 2022Article
- Immission levels and identification of sulfur dioxide sources in La Oroya city, Peruvian Andes.Environment, development and sustainability · 2022Article
- Impacts of the COVID-19 confinement on air quality, the Land Surface Temperature and the urban heat island in eight cities of Andalusia (Spain).Remote sensing applications : society and environment · 2022Article
- Analysis of Urban Heat Island and Heat Waves Using Sentinel-3 Images: a Study of Andalusian Cities in Spain.Earth systems and environment · 2022Article
- Counterfactual time series analysis of short-term change in air pollution following the COVID-19 state of emergency in the United States.Scientific reports · 2021Article
- Characterizing the interruption-recovery patterns of urban air pollution under the COVID-19 lockdown in China.Building and environment · 2021Article
- Effect of the COVID-19 Lockdown on Air Pollution in the Ostrava Region.International journal of environmental research and public health · 2021Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The implementation of confinement and physical distancing measures to restrict people's activities and transit in the midst of the COVID-19 pandemic allowed us to study how these measures affect the air quality in urban areas with high pollution rates, such as Santiago, Chile. A comparative study between the concentrations of PM10, PM2.5, NOx, CO, and O3 during the months of March to May 2020 and the corresponding concentrations during the same period in 2017-2019 is presented. A combination of surface measurements from the air quality monitoring network of the city, remote satellite measurements, and simulations of traffic activity and road transport emissions allowed us to quantify the change in the average concentrations of each pollutant. Average relative changes of traffic emissions (between 61% and 68%) implied statistically significant concentrations reductions of 54%, 13%, and 11% for NOx, CO, and PM2.5, respectively, during the pandemic period compared to historical period. In contrast, the average concentration of O3 increased by 63% during 2020 compared to 2017-2019. The nonlinear response observed in the pollution levels can be attributed to the changes in the vehicular emission patterns during the pandemic and to the role of other sources such as residential emissions or secondary PM.
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