Articles | Volume 15, issue 8
https://doi.org/10.5194/amt-15-2635-2022
https://doi.org/10.5194/amt-15-2635-2022
Research article
 | 
02 May 2022
Research article |  | 02 May 2022

An evaluation of the heat test for the ice-nucleating ability of minerals and biological material

Martin I. Daily, Mark D. Tarn, Thomas F. Whale, and Benjamin J. Murray

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Latest update: 17 May 2024
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Short summary
Mineral dust and particles of biological origin are important types of ice-nucleating particles (INPs) that can trigger ice formation of supercooled cloud droplets. Heat treatments are used to detect the presence of biological INPs in samples collected from the environment as the activity of mineral INPs is assumed unchanged, although not fully assessed. We show that the ice-nucleating ability of some minerals can change after heating and discuss how INP heat tests should be interpreted.