Abundant water-soluble calcium coatings  on fine Asian dust particles

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

doi:10.5194/acp-26-5947-2026

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

Supplement

https://doi.org/10.5194/acp-26-5947-2026-supplement

Data sets

Physicochemical properties of water-dialyzed single Asian Dust particles, V1 Tafeng Hu et al. https://doi.org/10.17632/4js9dfy9hm.1

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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.