Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 18
Articles | Volume 26, issue 18
https://doi.org/10.5194/acp-26-13505-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-26-13505-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 18
Research article
 | 
25 Sep 2026
Research article |  | 25 Sep 2026

Assessment of aerosol iron (Fe) solubility using global dataset – Part 1: Mechanisms underlying the inverse relationship between Fe solubility and Fe concentration

Kohei Sakata, Minako Kurisu, and Yoshio Takahashi

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Latest update: 16 Oct 2026
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Short summary
Aerosols are a source of dissolved iron (d-Fe) to the ocean. However, the factors controlling Fe solubility, which is closely linked to bioavailability, remain poorly understood. Using total and dissolved iron and aluminum datasets, this study estimated Fe solubility in mineral dust and anthropogenic particles. The results show that the inverse relationship between Fesol% and Fe concentration is primarily driven by progressive solubilization of mineral dust Fe during atmospheric transport.
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