Further, the study published in the journal Environmental Science: Processes & Impacts, revealed that local sources of emissions, such as vehicles and the burning of fuels, had less influence on air pollution levels than regional emissions sources, while weather events and atmospheric chemical processes contributed independently to air pollutant levels.”We demonstrate that regional sources, such as rural and agriculturally based emissions, that may have been less affected by the lockdown, have a significant influence on PM2.5 levels in Delhi and Hyderabad after weather-normalisation. This indicates that future PM2.5 mitigation strategies should focus on national-scale, as well as local sources,” said Cora Young, Associate Professor at the varsity.”Overall, this study highlights the impact of emissions, meteorology and chemistry on air pollution and that all three should be considered when assessing the effects of any short-term intervention on air pollutants,” Young added.
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