Articles | Volume 21, issue 3
Atmos. Chem. Phys., 21, 1581–1592, 2021
https://doi.org/10.5194/acp-21-1581-2021
Atmos. Chem. Phys., 21, 1581–1592, 2021
https://doi.org/10.5194/acp-21-1581-2021

Research article 04 Feb 2021

Research article | 04 Feb 2021

Evident PM2.5 drops in the east of China due to the COVID-19 quarantine measures in February

Zhicong Yin et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Yin Zhicong on behalf of the Authors (27 Nov 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (30 Nov 2020) by Jianping Huang
RR by Anonymous Referee #2 (10 Dec 2020)
RR by Anonymous Referee #1 (11 Dec 2020)
ED: Publish subject to minor revisions (review by editor) (12 Dec 2020) by Jianping Huang
AR by Yin Zhicong on behalf of the Authors (16 Dec 2020)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (17 Dec 2020) by Jianping Huang
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Short summary
It is a must to disentangle the contributions of stable meteorology from the effects of the COVID-19 lockdown. A 59 % decline in PM2.5 related to the COVID-19 pandemic was found in North China. The COVID-19 quarantine measures decreased the PM2.5 in the Yangtze River Delta by 72 %. In Hubei Province where most pneumonia cases were confirmed, the impact of the total emission reduction (72 %) evidently exceeded the rising percentage of PM2.5 driven by meteorology (13 %).
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