Abrupt exacerbation in air quality over Europe after the outbreak of Russia-Ukraine war

Anthropogenic nitrogen oxide (NOx) emissions are closely associated with human activities. In recent years, global human activity patterns have changed significantly owing to the COVID‐19 epidemic and international energy crisis. However, their effects on NOx emissions are not yet fully understood. In this study, we developed a two-step inversion framework using NO2 observations from the TROPOMI satellite and the GEOS-Chem global atmospheric chemical transport model, and inferred global anthropogenic NOx emissions from 2019 to 2022, focusing on China, the United States (U.S.), and Europe. Our results indicated an 16.8% reduction in NOx emissions in 2020 and a 3.95% rebound in 2021 across all regions. China rebounded faster than the others, surpassing its 2019 levels by July 2020. In 2022, emissions declined in all regions, driven mainly by the Omicron variant, energy shortages, and clean energy policies. Our findings provide valuable insights for the development of effective future emission management strategies.

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Abrupt exacerbation in air quality over Europe after the outbreak of Russia-Ukraine war

Cited by 3 publications

References 35 publications

How international conflicts and global crises can intertwine and affect the sources and levels of air pollution in urban areas

How international conflicts and global crises can intertwine and affect the sources and levels of air pollution in urban areas

The impact of urban mobility on air pollution in Kampala, an exemplar sub-Saharan African city

Anthropogenic NO _x emissions of China, the U.S. and Europe from 2019 to 2022 inferred from TROPOMI observations

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Abrupt exacerbation in air quality over Europe after the outbreak of Russia-Ukraine war

Cited by 3 publications

References 35 publications

How international conflicts and global crises can intertwine and affect the sources and levels of air pollution in urban areas

How international conflicts and global crises can intertwine and affect the sources and levels of air pollution in urban areas

The impact of urban mobility on air pollution in Kampala, an exemplar sub-Saharan African city

Anthropogenic NO x emissions of China, the U.S. and Europe from 2019 to 2022 inferred from TROPOMI observations

Contact Info

Product

Resources

About

Anthropogenic NO _x emissions of China, the U.S. and Europe from 2019 to 2022 inferred from TROPOMI observations