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Spherical tarball particles form through rapid chemical and physical changes of organic matter in biomass-burning smoke
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- Kouji Adachi
- Department of Atmosphere, Ocean and Earth System Modeling Research, Meteorological Research Institute, 3050052 Tsukuba, Japan;
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- Arthur J. Sedlacek
- Environmental and Climate Sciences, Brookhaven National Laboratory, Upton, NY 11973;
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- Lawrence Kleinman
- Environmental and Climate Sciences, Brookhaven National Laboratory, Upton, NY 11973;
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- Stephen R. Springston
- Environmental and Climate Sciences, Brookhaven National Laboratory, Upton, NY 11973;
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- Jian Wang
- Environmental and Climate Sciences, Brookhaven National Laboratory, Upton, NY 11973;
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- Duli Chand
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99352;
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- John M. Hubbe
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99352;
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- John E. Shilling
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99352;
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- Timothy B. Onasch
- Center for Sensor Systems and Technology, Aerodyne Research Inc., Billerica, MA 01821;
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- Takeshi Kinase
- Department of Atmosphere, Ocean and Earth System Modeling Research, Meteorological Research Institute, 3050052 Tsukuba, Japan;
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- Kohei Sakata
- Center for Global Environmental Research, National Institute for Environmental Studies, 3058506 Tsukuba, Japan;
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- Yoshio Takahashi
- Graduate School of Science, The University of Tokyo, 1130033 Tokyo, Japan;
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- Peter R. Buseck
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287;
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Description
<jats:title>Significance</jats:title> <jats:p>Wildfires emit large amounts of biomass-burning (BB) aerosol particles and contribute to regional and global climate. Moreover, BB emissions are expected to increase in coming decades as a result of climate change. Tarballs, spherical organic BB particles, are estimated to contribute up to ∼30% of the BB aerosol mass. However, uncertainty still exists as to how tarballs form and how they influence climate. Our observations show that tarballs form through a combination of chemical and physical changes of primary organic aerosols within the first hours following emission. The finding of tarball formation will improve assessments of BB particle evolution and of BB impacts on regional and global climate.</jats:p>
Journal
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 116 (39), 19336-19341, 2019-09-05
Proceedings of the National Academy of Sciences
