Articles | Volume 19, issue 13
Atmos. Chem. Phys., 19, 8783–8800, 2019
https://doi.org/10.5194/acp-19-8783-2019
Atmos. Chem. Phys., 19, 8783–8800, 2019
https://doi.org/10.5194/acp-19-8783-2019

Research article 10 Jul 2019

Research article | 10 Jul 2019

Enhanced ice nucleation activity of coal fly ash aerosol particles initiated by ice-filled pores

Nsikanabasi Silas Umo et al.

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Cited articles

Adams, T. H.: Coal Ash Recycling Reaches Record 56 Percent Amid Shifting Production and Use Patterns, Farmington Hills, 2017. 
Ahmaruzzaman, M.: A review on the utilization of fly ash, Prog. Energy Combust. Sci., 36, 327–363, https://doi.org/10.1016/j.pecs.2009.11.003, 2010. 
Alegbe, J., Ayanda, O. S., Ndungu, P., Alexander, N., Fatoba, O. O., and Petrik, L. F.: Chemical, Mineralogical and Morphological Investigation of Coal Fly Ash Obtained from Mpumalanga Province, South Africa, Res. J. Environ. Sci., 12, 98–105, https://doi.org/10.3923/rjes.2018.98.105, 2018. 
Benz, S., Megahed, K., Möhler, O., Saathoff, H., Wagner, R., and Schurath, U.: T-dependent rate measurements of homogeneous ice nucleation in cloud droplets using a large atmospheric simulation chamber, J. Photochem. Photobiol. A Chem., 176, 208–217, https://doi.org/10.1016/J.JPHOTOCHEM.2005.08.026, 2005. 
Blissett, R. S. and Rowson, N. A.: A review of the multi-component utilisation of coal fly ash, Fuel, 97, 1–23, https://doi.org/10.1016/J.FUEL.2012.03.024, 2012. 
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Short summary
Annually, over 600 Tg of coal fly ash (CFA) is produced; a significant proportion of this amount is injected into the atmosphere, which could significantly contribute to heterogeneous ice formation in clouds. This study presents an improved understanding of CFA particles' behaviour in forming ice in clouds, especially when exposed to lower temperatures before being re-circulated in the upper troposphere or entrained into the lower troposphere.
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