A high-resolution typical pollution source emission inventory and pollution source changes during the COVID-19 lockdown in a megacity, China.

Environ Sci Pollut Res Int · 2021 · PMC8052207 · PMID 33864221

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showed a trendno p-value reported

Due to lockdown policies, the number of flights showed a trend of continuous decline, as is shown in Fig.

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a decreasing trendno p-value reported

Figure 1 depicts all other pollutants except NO x with a decreasing trend during P2, and NO x emissions increased due to the increase in ship emissions at P2.

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