2023
DOI: 10.1021/acs.est.2c06472
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Aerosol Iron from Metal Production as a Secondary Source of Bioaccessible Iron

Abstract: Atmospheric iron (Fe) from anthropogenic, lithogenic, and pyrogenic sources contributes to ocean fertilization, climate change, and human health risk. However, significant uncertainties remain in the source apportionment due to a lack of source-specific evaluation of Fe-laden aerosols. Here, the large uncertainties in the model estimates are investigated using different Fe emissions from metal production. The best agreement in the anthropogenic factor of aerosol Fe concentrations with the field data in the dow… Show more

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Cited by 13 publications
(19 citation statements)
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“…However, an international project combining multiple atmospheric Fe models and field observational data draws one conclusion from several proposed hypotheses to explain this inverse relationship (Figure 6). 127 The statistical analyses of the comprehensive data reveal a dominant role of combustion (anthropogenic and pyrogenic) Fe 32 Please do not adjust margins Please do not adjust margins in high Fe bioaccessibility at low concentration in real environments. 127 In addition to the shipboard measurements, a ground-based field study concludes that when estimated aerosol pH is lower than 2, the proton-promoted dissolution of Fe leads to a strong relationship between bioaccessible Fe and pH.…”
Section: Bioaccessible Ironmentioning
confidence: 99%
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“…However, an international project combining multiple atmospheric Fe models and field observational data draws one conclusion from several proposed hypotheses to explain this inverse relationship (Figure 6). 127 The statistical analyses of the comprehensive data reveal a dominant role of combustion (anthropogenic and pyrogenic) Fe 32 Please do not adjust margins Please do not adjust margins in high Fe bioaccessibility at low concentration in real environments. 127 In addition to the shipboard measurements, a ground-based field study concludes that when estimated aerosol pH is lower than 2, the proton-promoted dissolution of Fe leads to a strong relationship between bioaccessible Fe and pH.…”
Section: Bioaccessible Ironmentioning
confidence: 99%
“…Here, we use the Integrated Massively Parallel Atmospheric Chemical Transport (IMPACT) model to estimate the source profile of marine aerosols over the Pacific. 32 In the model, 20 the POA emissions from the sea surface are calculated as a function of the chlorophyll a concentration, wind speed, sea surface temperature, and aerosol diameter. 33 The spatial distribution shows that POAs from sea spray comprise the majority of OAs over the tropical and subarctic North Pacific while POAs from continental sources contribute to the dominant sources over the regions of continental outflow.…”
Section: Aerosols and Their Precursor Gases Emitted From Oceans And T...mentioning
confidence: 99%
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