Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 9
Articles | Volume 26, issue 9
https://doi.org/10.5194/acp-26-5947-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-5947-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 9
Research article
 | 
05 May 2026
Research article |  | 05 May 2026

Abundant water-soluble calcium coatings on fine Asian dust particles

Tafeng Hu, Niu Jin, Yingpan Song, Feng Wu, Jing Duan, Yuqing Zhu, Hong Huang, Yu Huang, Junji Cao, and Daizhou Zhang

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Short summary
The dissolution behavior and climate impact of atmospheric calcium dust are governed by its size-resolved mineralogy. Our analysis of Asian dust reveals that a significant fraction of water-soluble calcium originates from calcite and gypsum present as soluble coatings on other dust particles. This specific mixing state facilitates rapid dissolution during atmospheric processing and constrains the role of Asian dust in atmospheric acid neutralization and the mitigation of ocean acidification.
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