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

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

doi:https://doi.org/10.5194/acp-21-10065-2021

Articles | Volume 21, issue 13

https://doi.org/10.5194/acp-21-10065-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-10065-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 13

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

Supplement

https://doi.org/10.5194/acp-21-10065-2021-supplement

Data sets

CNEMC data CNEMC http://www.pm25.in

TROPOMI data NASA GES DISC http://tropomi.gesdisc.eosdis.nasa.gov

Model code and software

WRF Source Codes and Graphics Software Download Page WRF https://www2.mmm.ucar.edu/wrf/users/download/get_sources.html

USEPA/CMAQ Github https://github.com/USEPA/CMAQ/tree/4.7.1

Download

Article (5664 KB)
Full-text XML

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.