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- W4313361854 abstract "The COVID-19 pandemic has caused several millions of deaths and forced the world population to a new normality. This study aims to analyze the air quality variation of several gaseous pollutants (CO, NO2, SO2, O3, PM10, and PM2.5) during the pre-lockdown, lockdown, and unlock period in the city of Monterrey using ground-based measurements. In this research, we proposed to use a control period of previous years to identify parameter variation due to local climate. The results showed a drastic decrease in measured contaminants during the lockdown period as follows: SO2 (−41.9%) > PM10 (−30.5%) > PM2.5 (−25.6%) > NO2 (−14.9%) > CO (−9.8%) compared to the control period (2017–2019). The O3 was the only air pollutant that showed an opposite trend, increasing during lockdown (+15%) and unlock (+2.2%), whereas CO (−16.6%) and NO2 (−30.6%) were further decreased. Moreover, using OMI/AURA satellite data, we detected a NO2 tropospheric column reduction by −1.9% during lockdown concerning the same period in the control interval. Moreover, we found a significant improvement in the Air Quality Index (AQI) due to the lockdown. Our findings indicate an association between air pollutants and economic activity and can be used in future strategies to improve urban air quality." @default.
- W4313361854 created "2023-01-06" @default.
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- W4313361854 date "2022-12-30" @default.
- W4313361854 modified "2023-10-16" @default.
- W4313361854 title "Analysis of COVID-19 Lockdown Effects on Urban Air Quality: A Case Study of Monterrey, Mexico" @default.
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- W4313361854 doi "https://doi.org/10.3390/su15010642" @default.
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