2021
DOI: 10.1016/j.uclim.2021.100803
|View full text |Cite
|
Sign up to set email alerts
|

Air pollution and COVID-19 lockdown in a large South American city: Santiago Metropolitan Area, Chile

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 measure… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

4
20
0
3

Year Published

2021
2021
2024
2024

Publication Types

Select...
8
1

Relationship

1
8

Authors

Journals

citations
Cited by 43 publications
(27 citation statements)
references
References 40 publications
4
20
0
3
Order By: Relevance
“…Studies based in South American cities are also consistent with studies around the world, showing reductions in all the analyzed pollutants and only increases in ozone [15][16][17][18][19]. For example, nitrogen dioxide (NO 2 ) concentrations decreased by 68% in Quito, Ecuador [17], 54% in Sao Paulo, Brazil [19], 48% in Lima, Peru [16], and 42% in Santiago, Chile [15]. Similarly, in these cities, PM 2.5 decreased by between 11% and 29%, and O 3 increased by between 30% and 63% [15][16][17]19].…”
Section: Introductionsupporting
confidence: 82%
See 1 more Smart Citation
“…Studies based in South American cities are also consistent with studies around the world, showing reductions in all the analyzed pollutants and only increases in ozone [15][16][17][18][19]. For example, nitrogen dioxide (NO 2 ) concentrations decreased by 68% in Quito, Ecuador [17], 54% in Sao Paulo, Brazil [19], 48% in Lima, Peru [16], and 42% in Santiago, Chile [15]. Similarly, in these cities, PM 2.5 decreased by between 11% and 29%, and O 3 increased by between 30% and 63% [15][16][17]19].…”
Section: Introductionsupporting
confidence: 82%
“…However, increases in ozone levels have been observed in many regions [11,12], highlighting potential trade-offs and the nonlinear links between emissions and atmospheric composition [14]. Studies based in South American cities are also consistent with studies around the world, showing reductions in all the analyzed pollutants and only increases in ozone [15][16][17][18][19]. For example, nitrogen dioxide (NO 2 ) concentrations decreased by 68% in Quito, Ecuador [17], 54% in Sao Paulo, Brazil [19], 48% in Lima, Peru [16], and 42% in Santiago, Chile [15].…”
Section: Introductionsupporting
confidence: 70%
“…Under a global perspective, an increase in O3 concentrations has been observed in the cities of Rome, Italy (14%) (Sicard et al, 2020), Sao Paulo (30%) (Nakada and Urban, 2020), Barcelona, Spain (43%) (Tobías et al, 2020), Santiago, Chile (63%) (Toro et al, 2021) and Lima, Peru (80%) (Rojas et al, 2021). The production of O3 depends on a complex and nonlinear tropospheric chemistry between its precursors (VOCs and NOx) (Finlayson-Pitts and Pitts, 2000).…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…Reduction of traffic volume during the pandemic was effective in improving air quality in these areas. Except for vehicular emissions, the change in air pollution can still be attributed to the role of other sources such as residential emissions, power generation, or secondary PM [ 13 , 15 ]. A sharp decrease in the concentration of CO, SO 2 , PM 2.5 , and an increase of O 3 has been observed in most US monitoring stations as well [ [16] , [17] , [18] , [19] ].…”
Section: Introductionmentioning
confidence: 99%