Articles | Volume 19, issue 12
https://doi.org/10.5194/acp-19-7973-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-19-7973-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Jun 2019
Research article |
| 18 Jun 2019
| 18 Jun 2019
Contributions of biomass-burning, urban, and biogenic emissions to the concentrations and light-absorbing properties of particulate matter in central Amazonia during the dry season
Suzane S. de Sá
John A. Paulson School of Engineering and Applied Sciences, Harvard
University, Cambridge, MA, USA
Luciana V. Rizzo
Department of Environmental Sciences, Universidade Federal de São Paulo,
Diadema, São Paulo, Brazil
Brett B. Palm
Department of Chemistry and Cooperative Institute for Research in
Environmental Sciences, University of Colorado, Boulder, CO, USA
now at: Department of Atmospheric Sciences, University of Washington,
Seattle, WA, USA
Pedro Campuzano-Jost
Department of Chemistry and Cooperative Institute for Research in
Environmental Sciences, University of Colorado, Boulder, CO, USA
Douglas A. Day
Department of Chemistry and Cooperative Institute for Research in
Environmental Sciences, University of Colorado, Boulder, CO, USA
Lindsay D. Yee
Department of Environmental Science, Policy, and Management, University of
California, Berkeley, CA, USA
Rebecca Wernis
Department of Civil and Environmental Engineering, University of California,
Berkeley, Berkeley, CA, USA
Gabriel Isaacman-VanWertz
Department of Environmental Science, Policy, and Management, University of
California, Berkeley, CA, USA
now at: Department of Civil and Environmental Engineering, Virginia
Tech, Blacksburg, VA, USA
Joel Brito
Institute of Physics, University of São Paulo, São Paulo, Brazil
now at: IMT Lille Douai, Université Lille, SAGE, Lille, France
Samara Carbone
Institute of Physics, University of São Paulo, São Paulo, Brazil
now at: Agrarian Sciences Institute, Federal University of
Uberlândia, Minas Gerais, Brazil
Yingjun J. Liu
John A. Paulson School of Engineering and Applied Sciences, Harvard
University, Cambridge, MA, USA
now at: College of Environmental Science and Engineering, Peking
University, Beijing, China
Arthur Sedlacek
Brookhaven National Laboratory, Upton, NY, USA
Stephen Springston
Brookhaven National Laboratory, Upton, NY, USA
Allen H. Goldstein
Department of Environmental Science, Policy, and Management, University of
California, Berkeley, CA, USA
Henrique M. J. Barbosa
Institute of Physics, University of São Paulo, São Paulo, Brazil
M. Lizabeth Alexander
Environmental Molecular Sciences Laboratory, Pacific Northwest National
Laboratory, Richland, WA, USA
Paulo Artaxo
Institute of Physics, University of São Paulo, São Paulo, Brazil
Jose L. Jimenez
Department of Chemistry and Cooperative Institute for Research in
Environmental Sciences, University of Colorado, Boulder, CO, USA
Scot T. Martin
CORRESPONDING AUTHOR
John A. Paulson School of Engineering and Applied Sciences, Harvard
University, Cambridge, MA, USA
Department of Earth and Planetary Sciences, Harvard University, Cambridge,
MA, USA
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Latest update: 14 Nov 2025
Short summary
This study investigates the impacts of urban and fire emissions on the concentration, composition, and optical properties of submicron particulate matter (PM1) in central Amazonia during the dry season. Biomass-burning and urban emissions appeared to contribute at least 80 % of brown carbon absorption while accounting for 30 % to 40 % of the organic PM1 mass concentration. Only a fraction of the 9-fold increase in mass concentration relative to the wet season was due to biomass burning.
This study investigates the impacts of urban and fire emissions on the concentration,...
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