Articles | Volume 21, issue 5
https://doi.org/10.5194/acp-21-3555-2021
© Author(s) 2021. 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-21-3555-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Global impact of COVID-19 restrictions on the surface concentrations of nitrogen dioxide and ozone
Christoph A. Keller
CORRESPONDING AUTHOR
NASA Global Modeling and Assimilation Office, Goddard Space Flight
Center, Greenbelt, MD, USA
Universities Space Research Association, Columbia, MD, USA
Mathew J. Evans
Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry,
University of York, York, YO10 5DD, UK
National Centre for Atmospheric Science, University of York, York,
YO10 5DD, UK
K. Emma Knowland
NASA Global Modeling and Assimilation Office, Goddard Space Flight
Center, Greenbelt, MD, USA
Universities Space Research Association, Columbia, MD, USA
Christa A. Hasenkopf
OpenAQ, Washington, D.C., USA
Sruti Modekurty
OpenAQ, Washington, D.C., USA
Robert A. Lucchesi
NASA Global Modeling and Assimilation Office, Goddard Space Flight
Center, Greenbelt, MD, USA
Science Systems and Applications, Inc., Lanham, MD, USA
Tomohiro Oda
NASA Global Modeling and Assimilation Office, Goddard Space Flight
Center, Greenbelt, MD, USA
Universities Space Research Association, Columbia, MD, USA
Bruno B. Franca
Municipal Government of Rio de Janeiro, Rio de Janeiro, Brazil
Felipe C. Mandarino
Municipal Government of Rio de Janeiro, Rio de Janeiro, Brazil
M. Valeria Díaz Suárez
Secretaria de Ambiente, Quito, Ecuador
Robert G. Ryan
School of Earth Sciences, The University of Melbourne, Melbourne, Australia
Luke H. Fakes
Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry,
University of York, York, YO10 5DD, UK
National Centre for Atmospheric Science, University of York, York,
YO10 5DD, UK
Steven Pawson
NASA Global Modeling and Assimilation Office, Goddard Space Flight
Center, Greenbelt, MD, USA
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Latest update: 20 Nov 2024
Short summary
This study combines surface observations and model simulations to quantify the impact of COVID-19 restrictions on air quality across the world. The presented methodology removes the confounding impacts of meteorology on air pollution. Our results indicate that surface concentrations of nitrogen dioxide, an important air pollutant emitted during the combustion of fossil fuels, declined by up to 60 % following the implementation of COVID-19 containment measures.
This study combines surface observations and model simulations to quantify the impact of...
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