Articles | Volume 25, issue 19
https://doi.org/10.5194/acp-25-12599-2025
© Author(s) 2025. 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-25-12599-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Oct 2025
Research article |
| 10 Oct 2025
| 10 Oct 2025
Individual particle compositions and aerosol mixing states at different altitudes over the ocean in East Asia
Department of Atmosphere, Ocean, and Earth System Modeling Research, Meteorological Research Institute, Tsukuba, Japan
Atsushi Yoshida
National Institute of Polar Research, Tachikawa, Japan
Tatsuhiro Mori
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Japan
Nobuhiro Moteki
Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Japan
Sho Ohata
Institute for Space–Earth Environmental Research, Nagoya University, Nagoya, Japan
Kazuyuki Kita
Department of Earth Science, Graduate School of Science and Engineering, Ibaraki University, Mito, Japan
Yoshimi Kawai
Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
Makoto Koike
Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, Japan
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Mizuo Kajino, Makoto Deushi, Tsuyoshi Thomas Sekiyama, Naga Oshima, Keiya Yumimoto, Taichu Yasumichi Tanaka, Joseph Ching, Akihiro Hashimoto, Tetsuya Yamamoto, Masaaki Ikegami, Akane Kamada, Makoto Miyashita, Yayoi Inomata, Shin-ichiro Shima, Pradeep Khatri, Atsushi Shimizu, Hitoshi Irie, Kouji Adachi, Yuji Zaizen, Yasuhito Igarashi, Hiromasa Ueda, Takashi Maki, and Masao Mikami
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Kouji Adachi, Naga Oshima, Sho Ohata, Atsushi Yoshida, Nobuhiro Moteki, and Makoto Koike
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Preprint withdrawn
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Atmos. Chem. Phys., 20, 13319–13341, https://doi.org/10.5194/acp-20-13319-2020, https://doi.org/10.5194/acp-20-13319-2020, 2020
Short summary
Short summary
Aerosols from wildfires affect the Earth's temperature by absorbing light or reflecting it back into space. This study investigates time-dependent chemical, microphysical, and optical properties of aerosols generated by wildfires in the Pacific Northwest, USA. Wildfire smoke plumes were traversed by an instrumented aircraft at locations near the fire and up to 3.5 h travel time downwind. Although there was no net aerosol production, aerosol particles grew and became more efficient scatters.
Kouji Adachi, Naga Oshima, Zhaoheng Gong, Suzane de Sá, Adam P. Bateman, Scot T. Martin, Joel F. de Brito, Paulo Artaxo, Glauber G. Cirino, Arthur J. Sedlacek III, and Peter R. Buseck
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Short summary
Short summary
Occurrences, size distributions, and number fractions of individual aerosol particles from the Amazon basin during the GoAmazon2014/5 campaign were analyzed using transmission electron microscopy. Aerosol particles from natural sources (e.g., mineral dust, primary biological aerosols, and sea salts) during the wet season originated from the Amazon forest and long-range transports (the Saharan desert and the Atlantic Ocean). They commonly mix at an individual particle scale during transport.
Cited articles
Adachi, K.: STEM-EDS data for all individual particles and the TEM sample average and Data used in figures [data set], Zenodo, https://doi.org/10.5281/zenodo.15178934, 2025.
Adachi, K. and Buseck, P. R.: Internally mixed soot, sulfates, and organic matter in aerosol particles from Mexico City, Atmos. Chem. Phys., 8, 6469–6481, https://doi.org/10.5194/acp-8-6469-2008, 2008.
Adachi, K., Chung, S. H., and Buseck, P. R.: Shapes of soot aerosol particles and implications for their effects on climate, Journal of Geophysical Research: Atmospheres, 115, https://doi.org/10.1029/2009jd012868, 2010.
Adachi, K., Dibb, J. E., Katich, J. M., Schwarz, J. P., Guo, H., Campuzano-Jost, P., Jimenez, J. L., Peischl, J., Holmes, C. D., and Crawford, J.: Occurrence, abundance, and formation of atmospheric tarballs from a wide range of wildfires in the western US, Atmos. Chem. Phys., 24, 10985–11004, https://doi.org/10.5194/acp-24-10985-2024, 2024.
Adachi, K., Sedlacek III, A. J., Kleinman, L., Springston, S. R., Wang, J., Chand, D., Hubbe, J. M., Shilling, J. E., Onasch, T. B., Kinase, T., Sakata, K., Takahashi, Y., and Buseck, P. R.: Spherical tarball particles form through rapid chemical and physical changes of organic matter in biomass-burning smoke, Proceedings of the National Academy of Sciences, 116, 19336–19341, https://doi.org/10.1073/pnas.1900129116, 2019.
Adachi, K., Oshima, N., Ohata, S., Yoshida, A., Moteki, N., and Koike, M.: Compositions and mixing states of aerosol particles by aircraft observations in the Arctic springtime, 2018, Atmos. Chem. Phys., 21, 3607–3626, https://doi.org/10.5194/acp-21-3607-2021, 2021.
Adachi, K., Oshima, N., Takegawa, N., Moteki, N., and Koike, M.: Meteoritic materials within sulfate aerosol particles in the troposphere are detected with transmission electron microscopy, Communications Earth & Environment, 3, https://doi.org/10.1038/s43247-022-00469-8, 2022.
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Short summary
This study measured the compositions and mixing states of individual aerosol particles collected at different altitudes over the western North Pacific by simultaneous sampling from an aircraft and a research vessel. The results showed that they were strongly influenced by Siberian Forest biomass burning and mixed with sea spray, and various aerosol compositions were identified at different altitudes, sizes, and aerosol sources, highlighting a wide range of individual particle compositions.
This study measured the compositions and mixing states of individual aerosol particles collected...
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