Pyrogenic iron: The missing link to high iron solubility in aerosols

Akinori Ito; Stelios Myriokefalitakis; Maria Kanakidou; Natalie M. Mahowald; Rachel A. Scanza; Douglas S. Hamilton; Alexander Baker; Timothy Jickells; Manmohan M. Sarin; Srinivas Bikkina; Yuan Gao; Rachel Shelley; Clifton S. Buck; William M. Landing; Andrew R. Bowie; Morgane M. G. Perron; Cécile Guieu; Nicholas Meskhidze; Matthew S. Johnson; Yan Feng; Jasper F. Kok; Athanasios Nenes; Robert A. Duce

doi:10.1126/sciadv.aau7671

Pyrogenic iron: The missing link to high iron solubility in aerosols

Akinori Ito (Lead Author), Stelios Myriokefalitakis, Maria Kanakidou, Natalie M. Mahowald, Rachel A. Scanza, Douglas S. Hamilton, Alexander Baker, Timothy Jickells, Manmohan M. Sarin, Srinivas Bikkina, Yuan Gao, Rachel Shelley, Clifton S. Buck, William M. Landing, Andrew R. Bowie, Morgane M. G. Perron, Cécile Guieu, Nicholas Meskhidze, Matthew S. Johnson, Yan FengJasper F. Kok, Athanasios Nenes, Robert A. Duce

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Abstract

Atmospheric deposition is a source of potentially bioavailable iron (Fe) and thus can partially control biological productivity in large parts of the ocean. However, the explanation of observed high aerosol Fe solubility compared to that in soil particles is still controversial, as several hypotheses have been proposed to explain this observation. Here, a statistical analysis of aerosol Fe solubility estimated from four models and observations compiled from multiple field campaigns suggests that pyrogenic aerosols are the main sources of aerosols with high Fe solubility at low concentration. Additionally, we find that field data over the Southern Ocean display a much wider range in aerosol Fe solubility compared to the models, which indicate an underestimation of labile Fe concentrations by a factor of 15. These findings suggest that pyrogenic Fe-containing aerosols are important sources of atmospheric bioavailable Fe to the open ocean and crucial for predicting anthropogenic perturbations to marine productivity.

Original language	English
Article number	eaau7671
Journal	Science Advances
Volume	5
DOIs	https://doi.org/10.1126/sciadv.aau7671
Publication status	Published - 1 May 2019

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itoSciAdv2019Final published version, 3.6 MBLicence: CC BY-NC

Alex Baker
- Alex.Bakeruea.acuk
- School of Environmental Sciences - Professor of Marine and Atmospheric Chemistry
- Centre for Ocean and Atmospheric Sciences - Member
- ClimateUEA - Member
Person: Member, Research Group Member, Academic, Teaching & Research
Tim Jickells
- T.Jickellsuea.acuk
- School of Environmental Sciences - Emeritus Professor
- Centre for Ocean and Atmospheric Sciences - Member
- ClimateUEA - Member
Person: Honorary, Research Group Member

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Ito, A., Myriokefalitakis, S., Kanakidou, M., Mahowald, N. M., Scanza, R. A., Hamilton, D. S., Baker, A., Jickells, T., Sarin, M. M., Bikkina, S., Gao, Y., Shelley, R., Buck, C. S., Landing, W. M., Bowie, A. R., Perron, M. M. G., Guieu, C., Meskhidze, N., Johnson, M. S., ... Duce, R. A. (2019). Pyrogenic iron: The missing link to high iron solubility in aerosols. Science Advances, 5, [eaau7671]. https://doi.org/10.1126/sciadv.aau7671

Ito, Akinori ; Myriokefalitakis, Stelios ; Kanakidou, Maria ; Mahowald, Natalie M. ; Scanza, Rachel A. ; Hamilton, Douglas S. ; Baker, Alexander ; Jickells, Timothy ; Sarin, Manmohan M. ; Bikkina, Srinivas ; Gao, Yuan ; Shelley, Rachel ; Buck, Clifton S. ; Landing, William M. ; Bowie, Andrew R. ; Perron, Morgane M. G. ; Guieu, Cécile ; Meskhidze, Nicholas ; Johnson, Matthew S. ; Feng, Yan ; Kok, Jasper F. ; Nenes, Athanasios ; Duce, Robert A. / Pyrogenic iron: The missing link to high iron solubility in aerosols. In: Science Advances. 2019 ; Vol. 5.

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title = "Pyrogenic iron: The missing link to high iron solubility in aerosols",

abstract = "Atmospheric deposition is a source of potentially bioavailable iron (Fe) and thus can partially control biological productivity in large parts of the ocean. However, the explanation of observed high aerosol Fe solubility compared to that in soil particles is still controversial, as several hypotheses have been proposed to explain this observation. Here, a statistical analysis of aerosol Fe solubility estimated from four models and observations compiled from multiple field campaigns suggests that pyrogenic aerosols are the main sources of aerosols with high Fe solubility at low concentration. Additionally, we find that field data over the Southern Ocean display a much wider range in aerosol Fe solubility compared to the models, which indicate an underestimation of labile Fe concentrations by a factor of 15. These findings suggest that pyrogenic Fe-containing aerosols are important sources of atmospheric bioavailable Fe to the open ocean and crucial for predicting anthropogenic perturbations to marine productivity.",

author = "Akinori Ito and Stelios Myriokefalitakis and Maria Kanakidou and Mahowald, {Natalie M.} and Scanza, {Rachel A.} and Hamilton, {Douglas S.} and Alexander Baker and Timothy Jickells and Sarin, {Manmohan M.} and Srinivas Bikkina and Yuan Gao and Rachel Shelley and Buck, {Clifton S.} and Landing, {William M.} and Bowie, {Andrew R.} and Perron, {Morgane M. G.} and C{\'e}cile Guieu and Nicholas Meskhidze and Johnson, {Matthew S.} and Yan Feng and Kok, {Jasper F.} and Athanasios Nenes and Duce, {Robert A.}",

year = "2019",

month = may,

day = "1",

doi = "10.1126/sciadv.aau7671",

language = "English",

volume = "5",

journal = "Science Advances",

issn = "2375-2548",

publisher = "American Association for the Advancement of Science",

}

Ito, A, Myriokefalitakis, S, Kanakidou, M, Mahowald, NM, Scanza, RA, Hamilton, DS, Baker, A , Jickells, T, Sarin, MM, Bikkina, S, Gao, Y, Shelley, R, Buck, CS, Landing, WM, Bowie, AR, Perron, MMG, Guieu, C, Meskhidze, N, Johnson, MS, Feng, Y, Kok, JF, Nenes, A & Duce, RA 2019, 'Pyrogenic iron: The missing link to high iron solubility in aerosols', Science Advances, vol. 5, eaau7671. https://doi.org/10.1126/sciadv.aau7671

Pyrogenic iron: The missing link to high iron solubility in aerosols. / Ito, Akinori (Lead Author); Myriokefalitakis, Stelios; Kanakidou, Maria; Mahowald, Natalie M.; Scanza, Rachel A.; Hamilton, Douglas S.; Baker, Alexander ; Jickells, Timothy; Sarin, Manmohan M.; Bikkina, Srinivas; Gao, Yuan; Shelley, Rachel; Buck, Clifton S.; Landing, William M.; Bowie, Andrew R.; Perron, Morgane M. G.; Guieu, Cécile; Meskhidze, Nicholas; Johnson, Matthew S.; Feng, Yan; Kok, Jasper F.; Nenes, Athanasios; Duce, Robert A.

In: Science Advances, Vol. 5, eaau7671, 01.05.2019.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Pyrogenic iron: The missing link to high iron solubility in aerosols

AU - Ito, Akinori

AU - Myriokefalitakis, Stelios

AU - Kanakidou, Maria

AU - Mahowald, Natalie M.

AU - Scanza, Rachel A.

AU - Hamilton, Douglas S.

AU - Baker, Alexander

AU - Jickells, Timothy

AU - Sarin, Manmohan M.

AU - Bikkina, Srinivas

AU - Gao, Yuan

AU - Shelley, Rachel

AU - Buck, Clifton S.

AU - Landing, William M.

AU - Bowie, Andrew R.

AU - Perron, Morgane M. G.

AU - Guieu, Cécile

AU - Meskhidze, Nicholas

AU - Johnson, Matthew S.

AU - Feng, Yan

AU - Kok, Jasper F.

AU - Nenes, Athanasios

AU - Duce, Robert A.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Atmospheric deposition is a source of potentially bioavailable iron (Fe) and thus can partially control biological productivity in large parts of the ocean. However, the explanation of observed high aerosol Fe solubility compared to that in soil particles is still controversial, as several hypotheses have been proposed to explain this observation. Here, a statistical analysis of aerosol Fe solubility estimated from four models and observations compiled from multiple field campaigns suggests that pyrogenic aerosols are the main sources of aerosols with high Fe solubility at low concentration. Additionally, we find that field data over the Southern Ocean display a much wider range in aerosol Fe solubility compared to the models, which indicate an underestimation of labile Fe concentrations by a factor of 15. These findings suggest that pyrogenic Fe-containing aerosols are important sources of atmospheric bioavailable Fe to the open ocean and crucial for predicting anthropogenic perturbations to marine productivity.

AB - Atmospheric deposition is a source of potentially bioavailable iron (Fe) and thus can partially control biological productivity in large parts of the ocean. However, the explanation of observed high aerosol Fe solubility compared to that in soil particles is still controversial, as several hypotheses have been proposed to explain this observation. Here, a statistical analysis of aerosol Fe solubility estimated from four models and observations compiled from multiple field campaigns suggests that pyrogenic aerosols are the main sources of aerosols with high Fe solubility at low concentration. Additionally, we find that field data over the Southern Ocean display a much wider range in aerosol Fe solubility compared to the models, which indicate an underestimation of labile Fe concentrations by a factor of 15. These findings suggest that pyrogenic Fe-containing aerosols are important sources of atmospheric bioavailable Fe to the open ocean and crucial for predicting anthropogenic perturbations to marine productivity.

U2 - 10.1126/sciadv.aau7671

DO - 10.1126/sciadv.aau7671

M3 - Article

VL - 5

JO - Science Advances

JF - Science Advances

SN - 2375-2548

M1 - eaau7671

ER -

Pyrogenic iron: The missing link to high iron solubility in aerosols

Abstract

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Alex Baker

Tim Jickells

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