Fine Ash‐Bearing Particles as a Major Aerosol Component in Biomass Burning Smoke
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- Kouji Adachi
- Department of Atmosphere, Ocean and Earth System Modelling Research Meteorological Research Institute Tsukuba Japan
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- Jack E. Dibb
- Institute for the Study of Earth, Oceans, and Space University of New Hampshire Durham NH USA
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- Eric Scheuer
- Institute for the Study of Earth, Oceans, and Space University of New Hampshire Durham NH USA
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- Joseph M. Katich
- Chemical Sciences Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Joshua P. Schwarz
- Chemical Sciences Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Anne E. Perring
- Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
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- Braden Mediavilla
- Department of Chemistry Colgate University Hamilton NY USA
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- Hongyu Guo
- Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
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- Pedro Campuzano‐Jost
- Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
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- Jose L. Jimenez
- Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
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- James Crawford
- NASA Langley Research Center Hampton VA USA
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- Amber J. Soja
- NASA Langley Research Center Hampton VA USA
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- Naga Oshima
- Department of Atmosphere, Ocean and Earth System Modelling Research Meteorological Research Institute Tsukuba Japan
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- Mizuo Kajino
- Department of Atmosphere, Ocean and Earth System Modelling Research Meteorological Research Institute Tsukuba Japan
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- Takeshi Kinase
- Department of Atmosphere, Ocean and Earth System Modelling Research Meteorological Research Institute Tsukuba Japan
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- Lawrence Kleinman
- Environmental and Climate Sciences Department Brookhaven National Laboratory Upton NY USA
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- Arthur J. Sedlacek
- Environmental and Climate Sciences Department Brookhaven National Laboratory Upton NY USA
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- Robert J. Yokelson
- Department of Chemistry and Biochemistry University of Montana Missoula MT USA
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- Peter R. Buseck
- School of Earth and Space Exploration & School of Molecular Sciences Arizona State University Tempe AZ USA
抄録
<jats:title>Abstract</jats:title><jats:p>Biomass burning (BB) events are occurring globally with increasing frequency, and their emissions are having more impacts on human health and climate. Large ash particles are recognized as a BB product with major influences on soil and water environments. However, fine‐ash particles, which have diameters smaller than several microns and characteristic morphologies and compositions (mainly Ca and Mg carbonates), have not yet been explicitly considered as a major BB aerosol component either in field observations or climate models. This study measured BB aerosol samples using transmission electron microscopy (TEM) and ion chromatography during the Fire Influence on Regional to Global Environments and Air Quality (FIREX‐AQ) campaign. We show that significant amounts of fine ash‐bearing particles are transported >100 km from their fire sources. Our environmental chamber experiments suggest that they can act as cloud condensation and ice nuclei. We also found considerable amounts of fine ash‐bearing particles in the TEM samples collected during previous campaigns (Biomass Burning Observation Project and Megacity Initiative: Local and Global Research Observations). These ash particles are commonly mixed with organic matter and make up ∼8% and 5% of BB smoke by number and mass, respectively, in samples collected during the FIREX‐AQ campaign. The measured ash‐mass concentrations are approximately five times and six times greater than those of BB black carbon and potassium, respectively, scaling to an estimated global emission of 11.6 Tg yr<jats:sup>−1</jats:sup> with a range of 8.8–16.3 Tg yr<jats:sup>−1</jats:sup>. Better characterization and constraints on these fine ash‐bearing particles will improve BB aerosol measurements and strengthen assessments of BB impacts on human health and climate.</jats:p>
収録刊行物
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- Journal of Geophysical Research: Atmospheres
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Journal of Geophysical Research: Atmospheres 127 (2), e2021JD035657-, 2022-01-18
American Geophysical Union (AGU)
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詳細情報 詳細情報について
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- CRID
- 1360294643729266304
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- ISSN
- 21698996
- 2169897X
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- データソース種別
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- Crossref
- KAKEN