TY - JOUR A1 - Murphy, D. M. A1 - Chow, J. C. A1 - Leibensperger, E. M. A1 - Malm, W. C. A1 - Pitchford, M. A1 - Schichtel, B. A. A1 - Watson, J. G. A1 - White, W. H. T1 - Decreases in elemental carbon and fine particle mass in the United States JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 10 SP - 4679 EP - 4686 Y1 - 2011/05/19 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/11/4679/2011/ L1 - https://acp.copernicus.org/articles/11/4679/2011/acp-11-4679-2011.pdf DO - 10.5194/acp-11-4679-2011 ER -