Articles | Volume 21, issue 15
Atmos. Chem. Phys., 21, 11801–11814, 2021
https://doi.org/10.5194/acp-21-11801-2021
Atmos. Chem. Phys., 21, 11801–11814, 2021
https://doi.org/10.5194/acp-21-11801-2021

Research article 09 Aug 2021

Research article | 09 Aug 2021

Effect of chemically induced fracturing on the ice nucleation activity of alkali feldspar

Alexei A. Kiselev et al.

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Supplementary data for the manuscript "Effect of chemically induced fracturing on the ice nucleation activity of alkali feldspar" Alice Keinert, Tilia Gaedeke, Thomas Leisner, Christoph Sutter, Elena Petrishcheva, and Rainer Abart https://doi.org/10.5445/IR/1000132261

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Short summary
Alkali feldspar is the most abundant mineral in the Earth's crust and is often present in mineral dust aerosols that are responsible for the formation of rain and snow in clouds. However, the cloud droplets containing pure potassium-rich feldspar would not freeze unless cooled down to a very low temperature. Here we show that partly replacing potassium with sodium would induce fracturing of feldspar, exposing a crystalline surface that could initiate freezing at higher temperature.
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