Articles | Volume 22, issue 19
https://doi.org/10.5194/acp-22-12985-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-12985-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Oct 2022
Research article |
| 10 Oct 2022
| 10 Oct 2022
Changing ozone sensitivity in the South Coast Air Basin during the COVID-19 period
Jason R. Schroeder
CORRESPONDING AUTHOR
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
Chenxia Cai
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
Jin Xu
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
David Ridley
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
Jin Lu
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
Nancy Bui
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
now at: ICF Consulting, 980 9th Street, Sacramento, CA, USA
Jeremy Avise
California Air Resources Board, 1001 I Street, Sacramento, CA, USA
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Short summary
Ozone, a key component of smog, has plagued the Los Angeles (LA) region for decades. Ozone is created by complex chemical reactions that can be greatly impacted by anthropogenic emissions. This study makes use of the COVID-19 period to study the sensitivity of ozone chemistry in LA to certain anthropogenic emissions, notably from vehicles. We find that vehicular emissions of key pollutants dropped by up to 25 % during COVID-19, which caused a fundamental shift in ozone chemistry in the region.
Ozone, a key component of smog, has plagued the Los Angeles (LA) region for decades. Ozone is...
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