Articles | Volume 16, issue 1
Research article
18 Jan 2016
Research article |  | 18 Jan 2016

Effects of emission reductions on organic aerosol in the southeastern United States

C. L. Blanchard, G. M. Hidy, S. Shaw, K. Baumann, and E. S. Edgerton

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Cited articles

Andreae, M. O. and Merlet, P.: Emission of trace gases and aerosols from biomass burning, Global Biogeochem. Cy., 15, 955–966, 2001.
Andreae, M. O., Atlas, E., Cachier, H., Cofer III, W. R., Harris, G. W., Helas, G., Koppmann, R., Lacaux, J.-P., and Ward, D. E.: Trace gas and aerosol emissions from savanna fires, in: Biomass Burning and Global Change, edited by: Levine, J. S., MIT Press, Cambridge MA, USA, 278–295, 1996.
Atmospheric Research and Analysis (ARA): Introduction to the Southeastern Aerosol Research and Characterization (SEARCH) Network, available at: (last access: 18 December 2015), 2014
Baumann, K., Flanagan, J. B., and Jayanty, R. K. M.: Fine particulate matter source apportionment for the chemical Speciation Trends Network site at Birmingham, Alabama, using Positive Matrix Factorization, J. Air Waste Manage., 58, 27–44, 2008.
Blanchard, C. L., Hidy, G. M., Tanenbaum, S., Edgerton, E., Hartsell, B., and Jansen, J.: Carbon in southeastern aerosol particles: empirical estimates of secondary organic aerosol formation, Atmos. Environ., 42, 6710–6720, 2008.
Short summary
Fifteen years of gas and particle measurements at eight monitoring sites comprising the Southeastern Aerosol Research and Characterization (SEARCH) network offer insights into the sources of organic aerosol in the southeastern United States. Between 1999 and 2013, mean organic aerosol concentrations declined due to decreasing particle emissions from motor vehicles and to less secondary organic aerosol with declining emissions of sulfur dioxide, nitrogen oxides, and volatile organic compounds.
Final-revised paper