A comprehensive global modeling assessment of nitrate heterogeneous formation on desert dust

Soussé Villa, Rubén; Jorba, Oriol; Gonçalves Ageitos, María; Bowdalo, Dene; Guevara, Marc; Pérez García-Pando, Carlos

doi:https://doi.org/10.5194/acp-25-4719-2025

Articles | Volume 25, issue 9

https://doi.org/10.5194/acp-25-4719-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-4719-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 9

Research article

|

07 May 2025

Research article |

| 07 May 2025

A comprehensive global modeling assessment of nitrate heterogeneous formation on desert dust

Rubén Soussé Villa, Oriol Jorba, María Gonçalves Ageitos, Dene Bowdalo, Marc Guevara, and Carlos Pérez García-Pando

Supplement

https://doi.org/10.5194/acp-25-4719-2025-supplement

Data sets

"A Comprehensive Global Modelling Assessment of Nitrate Heterogeneous Formation on Desert Dust": Column loads monthly means per species. R. Soussé https://doi.org/10.5281/zenodo.12789730

GHOST: A globally harmonised dataset of surface atmospheric composition measurements D. Bowdalo https://doi.org/10.5281/zenodo.10637449

Model code and software

MONARCH atmospheric chemistry model BSC Earth Sciences department https://earth.bsc.es/gitlab/es/monarch

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Short summary

Desert dust forms nitrate coatings as it travels through the atmosphere. However, current models that predict this process vary greatly due to different methods and inaccuracies. We examined how nitrate forms in a global model, focusing on how gases condense on dust, the lifespan of different particles, and the impact of alkalinity. Our findings show that models work best when they consider reversible gas condensation with alkalinity. This should lead to better estimates of climate impacts.