Articles | Volume 17, issue 7
https://doi.org/10.5194/essd-17-3679-2025
https://doi.org/10.5194/essd-17-3679-2025
Data description paper
 | 
30 Jul 2025
Data description paper |  | 30 Jul 2025

Mapping the global distribution of lead and its isotopes in seawater with explainable machine learning

Arianna Olivelli, Rossella Arcucci, Mark Rehkämper, and Tina van de Flierdt

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Short summary
In this study, we use machine learning models to produce the first global maps of Pb concentrations and isotope compositions in the ocean. In line with observations, we find that (i) the surface Indian Ocean has the highest levels of pollution, (ii) pollution from previous decades is sinking in the North Atlantic and Pacific oceans, and (iii) waters carrying Pb pollution are spreading from the Southern Ocean throughout the Southern Hemisphere at intermediate depths.
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