Articles | Volume 21, issue 22
https://doi.org/10.5194/acp-21-17115-2021
https://doi.org/10.5194/acp-21-17115-2021
Research article
 | 
25 Nov 2021
Research article |  | 25 Nov 2021

Changes in PM2.5 concentrations and their sources in the US from 1990 to 2010

Ksakousti Skyllakou, Pablo Garcia Rivera, Brian Dinkelacker, Eleni Karnezi, Ioannis Kioutsioukis, Carlos Hernandez, Peter J. Adams, and Spyros N. Pandis

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Short summary
Significant reductions in pollutant emissions took place in the US from 1990 to 2010. The reductions in sulfur dioxide emissions from electric-generating units have dominated the reductions in fine particle mass. The reductions in transportation emissions have led to a 30 % reduction of elemental concentrations and of organic particulate matter by a factor of 3. On the other hand, changes in biomass burning and biogenic secondary organic aerosol have been modest.
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