Articles | Volume 19, issue 8
Atmos. Chem. Phys., 19, 5451–5465, 2019
https://doi.org/10.5194/acp-19-5451-2019
Atmos. Chem. Phys., 19, 5451–5465, 2019
https://doi.org/10.5194/acp-19-5451-2019

Research article 25 Apr 2019

Research article | 25 Apr 2019

The importance of crystalline phases in ice nucleation by volcanic ash

Elena C. Maters et al.

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Short summary
This experimental study investigates the influence of volcanic ash chemical composition, crystallinity, and mineralogy on its ability to promote freezing of supercooled water. The results indicate that crystals in ash play a key role in this process and suggest that feldspars and perhaps pyroxenes in ash may be highly ice-active. These findings contribute to improving understanding of the potential of ash emissions from different explosive eruptions to impact ice formation in the atmosphere.
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