Contrasted release of insoluble elements (Fe, Al, rare earth elements, Th, Pa) after dust deposition in seawater: a tank experiment approach

Roy-Barman, Matthieu; Foliot, Lorna; Douville, Eric; Leblond, Nathalie; Gazeau, Fréderic; Bressac, Matthieu; Wagener, Thibaut; Ridame, Céline; Desboeufs, Karine; Guieu, Cécile

doi:https://doi.org/10.5194/bg-18-2663-2021

Articles | Volume 18, issue 8

https://doi.org/10.5194/bg-18-2663-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Atmospheric deposition in the low-nutrient-low-chlorophyll...

https://doi.org/10.5194/bg-18-2663-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 8

Research article

|

27 Apr 2021

Research article |

| 27 Apr 2021

Contrasted release of insoluble elements (Fe, Al, rare earth elements, Th, Pa) after dust deposition in seawater: a tank experiment approach

Matthieu Roy-Barman, Lorna Foliot, Eric Douville, Nathalie Leblond, Fréderic Gazeau, Matthieu Bressac, Thibaut Wagener, Céline Ridame, Karine Desboeufs, and Cécile Guieu

Supplement

https://doi.org/10.5194/bg-18-2663-2021-supplement

Data sets

PEACETIME ProcEss studies at the Air-sEa Interface after dust deposition in the MEditerranean sea C. Guieu et al. http://www.obs-vlfr.fr/proof/php/PEACETIME/peacetime.php

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Short summary

The release of insoluble elements such as aluminum (Al), iron (Fe), rare earth elements (REEs), thorium (Th) and protactinium (Pa) when Saharan dust falls over the Mediterranean Sea was studied during tank experiments under present and future climate conditions. Each element exhibited different dissolution kinetics and dissolution fractions (always lower than a few percent). Changes in temperature and/or pH under greenhouse conditions lead to a lower Th release and a higher light REE release.