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Argentina: change in air pollution in Buenos Aires 2020

From March 22 to April 14, 2020, nitrogen dioxide air pollution levels in Buenos Aires, Argentina have decreased weekly when compared to the first ten days of March, reaching a reduction of 60 percent between April 5 and 14. In the following weeks, the city's pollution level showed a constant level, equivalent to a 40 percent decrease in comparison to the baseline.

Nitrogen dioxide (NO₂) is a gaseous air pollutant and has a direct connection to fossil fuel emissions. Changes in air pollution levels are related to a reduction in industrial activity and traffic circulation in urban areas, a consequence of lockdown measures enforced globally in an attempt to limit the spread of the coronavirus pandemic. The first case of COVID-19 was reported in Argentina on March 3, with a total lockdown implemented on March 20.

Change in nitrogen dioxide (NO₂) air pollution level in Buenos Aires, Argentina from March to May 2020

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Release date




Survey time period

March to May 2020

Special properties

*In comparison to the first ten days of March 2020

Supplementary notes

The air quality measures are based on modified Copernicus Sentinel satellite data. Figures are averaged over ten days, since concentrations vary from day to day due to changes in weather conditions.
Nitrogen dioxide (NO₂) is a gaseous air pollutant and has a direct connection to fossil fuel emissions.

The source does not specify the release date. The publication date is the date of access.
Additional information about the source's methodology can be found here.

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