Articles | Volume 21, issue 13
https://doi.org/10.5194/acp-21-10065-2021
https://doi.org/10.5194/acp-21-10065-2021
Research article
 | 
06 Jul 2021
Research article |  | 06 Jul 2021

Quantitative assessment of changes in surface particulate matter concentrations and precursor emissions over China during the COVID-19 pandemic and their implications for Chinese economic activity

Hyun Cheol Kim, Soontae Kim, Mark Cohen, Changhan Bae, Dasom Lee, Rick Saylor, Minah Bae, Eunhye Kim, Byeong-Uk Kim, Jin-Ho Yoon, and Ariel Stein

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Cited articles

Bae, C., Kim, H. C., Kim, B.-U., and Kim, S.: Surface ozone response to satellite-constrained SO2 emission adjustments and its implications, Environ. Pollut., 258, 113469, https://doi.org/10.1016/j.envpol.2019.113469, 2020a. 
Bae, C., Kim, H. C., Kim, B.-U., Kim, Y., Woo, J.-H., and Kim, S.: Updating Chinese SO2 emissions with surface observations for regional air-quality modeling over East Asia, Atmos. Environ., 228, 117416, https://doi.org/10.1016/j.atmosenv.2020.117416, 2020b. 
Bao, R. and Zhang, A.: Does lockdown reduce air pollution? Evidence from 44 cities in northern China, Sci. Total Environ., 731, 139052, https://doi.org/10.1016/j.scitotenv.2020.139052, 2020. 
Beirle, S., Boersma, K. F., Platt, U., Lawrence, M. G., and Wagner, T.: Megacity Emissions and Lifetimes of Nitrogen Oxides Probed from Space, Science, 333, 1737–1739, https://doi.org/10.1126/science.1207824, 2011. 
Binkowski, F. S. and Roselle, S. J.: Models-3 Community Multiscale Air Quality (CMAQ) model aerosol component 1. Model description, J. Geophys. Res., 108, 2001JD001409, https://doi.org/10.1029/2001JD001409, 2003. 
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Short summary
Global outbreaks of COVID-19 offer rare opportunities of natural experiments in emission control and corresponding responses of tropospheric chemistry. This study's novel approach investigates (1) isolating the pandemic's impact from natural and anthropogenic variations, (2) emission adjustment to reproduce real-time emissions, and (3) brute-force modeling to investigate Chinese economic activities. Results provide characteristics of the region's chemistry and emissions.
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