Articles | Volume 25, issue 18
https://doi.org/10.5194/acp-25-11087-2025
© 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-25-11087-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
24 Sep 2025
Research article |
| 24 Sep 2025
| 24 Sep 2025
Atmospheric chemistry in East Asia determines the iron solubility of aerosol particles supplied to the North Pacific Ocean
Kohei Sakata
CORRESPONDING AUTHOR
Earth System Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
now at: Graduate School of Engineering, Tokyo Denki University, 5 Senjyu-Asahi-Cho, Adachi-ku, Tokyo 120-8551, Japan
Shotaro Takano
Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
Atsushi Matsuki
Institute of Nature and Environmental Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
Yasuo Takeichi
Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Hiroshi Tanimoto
Earth System Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
Aya Sakaguchi
Institute of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
Minako Kurisu
Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2–15, Natsushima-cho, Yokosuka, Kanagawa, 237-0061, Japan
now at: Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan
Yoshio Takahashi
Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Institute of Materials Structure Science, High-Energy Accelerator Research Organization Tsukuba, Ibaraki 305-0801, Japan
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Short summary
Deposition of aerosol iron (Fe) into the ocean stimulates primary production and influences the global carbon cycle, although the factors governing the aerosol Fe solubility remain uncertain. Our observations in Japan revealed that both mineral dust and anthropogenic aerosols are significant sources of dissolved Fe, and that atmospheric chemical weathering enhances their solubility. This finding is expected to play a crucial role in estimating the supply of dissolved iron to the ocean.
Deposition of aerosol iron (Fe) into the ocean stimulates primary production and influences the...
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