Dry season aerosol iron solubility in tropical northern Australia

Winton, V. Holly L.; Edwards, Ross; Bowie, Andrew R.; Keywood, Melita; Williams, Alistair G.; Chambers, Scott D.; Selleck, Paul W.; Desservettaz, Maximilien; Mallet, Marc D.; Paton-Walsh, Clare

doi:https://doi.org/10.5194/acp-16-12829-2016

Articles | Volume 16, issue 19

https://doi.org/10.5194/acp-16-12829-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-12829-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 19

Research article

|

14 Oct 2016

Research article |

| 14 Oct 2016

Dry season aerosol iron solubility in tropical northern Australia

V. Holly L. Winton, Ross Edwards, Andrew R. Bowie, Melita Keywood, Alistair G. Williams, Scott D. Chambers, Paul W. Selleck, Maximilien Desservettaz, Marc D. Mallet, and Clare Paton-Walsh

Supplement

https://doi.org/10.5194/acp-16-12829-2016-supplement

Data sets

HR-ICP-MS soluble and total trace element data for Gunn Point, Northern Territory aerosols (June 2014) V. H. L. Winton, R. Edwards, and A. R. Bowie https://doi.org/10.4225/06/5671012A48C2A

Short summary

The deposition of soluble aerosol iron (Fe) can initiate nitrogen fixation and trigger toxic algal blooms in nitrate-poor tropical waters. We present dry season soluble Fe data from northern Australia that reflect coincident dust and biomass burning sources of soluble Fe. Our results show that while biomass burning species are not a direct source of soluble Fe, biomass burning may substantially enhance the solubility of mineral dust with fractional Fe solubility up to 12 % in mixed aerosols.