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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Predicted and Observed Changes in Summertime Biogenic and Total Organic Aerosol in the Southeast United States from 2001 to 2010
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Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-648,https://doi.org/10.5194/acp-2022-648, 2022
Revised manuscript not accepted
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Cited articles

Beckerman, B. S., Jerrett, M., Serre, M., Martin, R. V., Lee, S.-J., van Donkelaar, A., Ross, Z., Su, J., and Burnett, R. T.: A hybrid approach to estimating national scale spatiotemporal variability of PM2.5 in the contiguous United States, Environ. Sci. Technol., 47, 7233–7241, 2013. 
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Eeftens, M., Beelen, R., de Hoogh, K., Bellander, T., Cesaroni, G., Cirach, M., Declercq, C., Delele, A., Dons, E., and de Nazelle, A.: Development of land use regression models for PM2.5 absorbance, PM10 and PMCoarse in 20 European study areas, results of the ESCAPE Project, Environ. Sci. Technol., 46, 11195–11205, 2012. 
Emery, C., Liu, Z., Russell, A. G., Odman, M. T., Yarwood, G., and Kumar, N.: Recommendations on statistics and benchmarks to assess photochemical model performance, J. Air Waste Manage., 67, 582–598, 2017. 
Environ: Comprehensive Air Quality Model with Extensions Version 4.40, Users Guide, ENVIRON Int. Corp., Novato, CA, available at: http://www.camx.com (last access: November 2020), 2006. 
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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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