Articles | Volume 20, issue 5
Atmos. Chem. Phys., 20, 3209–3230, 2020
https://doi.org/10.5194/acp-20-3209-2020
Atmos. Chem. Phys., 20, 3209–3230, 2020
https://doi.org/10.5194/acp-20-3209-2020

Technical note 17 Mar 2020

Technical note | 17 Mar 2020

Technical note: Fundamental aspects of ice nucleation via pore condensation and freezing including Laplace pressure and growth into macroscopic ice

Claudia Marcolli

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Subject: Clouds and Precipitation | Research Activity: Atmospheric Modelling | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Adler, G., Koop, T., Haspel, C., Taraniuk, I., Moise, T., Koren, I., Heiblum, R. H., and Rudich, Y.: Formation of highly porous aerosol particles by atmospheric freeze-drying in ice clouds, P. Natl. Acad. Sci. USA, 110, 20414–20419, https://doi.org/10.1073/pnas.1317209110, 2013. 
Amaya, A. J. and Wyslouzil, B. E.: Ice nucleation rates near 225 K, J. Chem. Phys., 148, 084501, https://doi.org/10.1063/1.5019362, 2018. 
Angell, C. A.: Formation of glasses from liquids and biopolymers, Science, 267, 1924–1935, https://doi.org/10.1126/science.267.5206.1924, 1995. 
Bartell, L. S. and Chushak, Y. G.: Water in Confining Geometries, edited by: Buch, V. and Devlin, J. P., Spinger-Verlag, Berlin, 399–424, 2003. 
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Short summary
Pore condensation and freezing (PCF) is an ice nucleation mechanism explaining ice formation at low ice supersaturation. It is assumed that liquid water condenses in pores of solid aerosol particles below water saturation followed by ice nucleation within the pores. This study discusses conditions of pore filling, homogeneous ice nucleation within the volume of porewater, and growth of ice out of the pores, taking the effect of negative pressure within pores below water saturation into account.
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