Seawater Leaching as a Constraint on the Oceanic Flux of Aerosol Iron

March 1, 2026EARTH AND ENVIRONMENT

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The research aims to clarify how seawater leaching influences the availability of aerosol-derived iron in the ocean.
Analyzed the dissolution characteristics of iron from aerosols under different seawater conditions.
Utilized stable iron isotopes to distinguish between different sources of aerosol iron.
Combined isotopic data with biogeochemical models to evaluate atmospheric iron input.
Dissolution rates of aerosol iron are affected by mineral composition and seawater chemistry.
Stable isotopic analysis showed preferential release of lighter isotopes during dissolution.
Traditional methods overestimate iron solubility compared to natural seawater conditions.

Examines seawater leaching's effect on aerosol iron's bioavailability, indicating its role in marine productivity.

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Fang et al. (2026) studied this question.

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