Articles | Volume 20, issue 1
https://doi.org/10.5194/acp-20-267-2020
https://doi.org/10.5194/acp-20-267-2020
Research article
 | 
07 Jan 2020
Research article |  | 07 Jan 2020

The changing role of organic nitrates in the removal and transport of NOx

Paul S. Romer Present, Azimeh Zare, and Ronald C. Cohen

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Short summary
The chemistry of nitrogen oxides (NOx) affects both air quality and climate through its role in the production of ozone and secondary aerosols. We find that recent changes in emissions have caused a significant shift in the chemical loss of NOx away from direct production of HNO3 and towards production of organic nitrates. This shift is leading to a flatter distribution of NOx across the United States and helping transform air pollution from a local issue into a broader regional concern.
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