Assessment of aerosol iron (Fe) solubility using global dataset – Part 1: Mechanisms underlying the inverse relationship between Fe solubility and Fe concentration
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
Atmos. Chem. Phys., 26, 13505–13529, https://doi.org/10.5194/acp-26-13505-2026, 2026
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.