Understanding and revealing the intrinsic impacts of the COVID-19 lockdown on air quality and public health in North China using machine learning.

Sci Total Environ · 2023 · PMC9550286 · PMID 36228798

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a positive trendno p-value reported

Differ from other air pollutants, annual mean deweathered O 3 shown a positive trend by +2.9 % per year in study areas during 2015–2019.

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