Substantial changes in gaseous pollutants and chemical compositions in fine particles in the North China Plain during the COVID-19 lockdown period: anthropogenic vs. meteorological influences.

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Date: June 9, 2021
From: Atmospheric Chemistry and Physics(Vol. 21, Issue 11)
Publisher: Copernicus GmbH
Document Type: Brief article
Length: 245 words

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Abstract :

The rapid response to the COVID-19 pandemic led to unprecedented decreases in economic activities, thereby reducing the pollutant emissions. A random forest (RF) model was applied to determine the respective contributions of meteorology and anthropogenic emissions to the changes in air quality. The result suggested that the strict lockdown measures significantly decreased primary components such as Cr (-67 %) and Fe (-61 %) in PM.sub.2.5 (p

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Gale Document Number: GALE|A664619493