Articles | Volume 22, issue 22
https://doi.org/10.5194/acp-22-14931-2022
https://doi.org/10.5194/acp-22-14931-2022
Research article
 | 
23 Nov 2022
Research article |  | 23 Nov 2022

The Urmia playa as a source of airborne dust and ice-nucleating particles – Part 2: Unraveling the relationship between soil dust composition and ice nucleation activity

Nikou Hamzehpour, Claudia Marcolli, Kristian Klumpp, Debora Thöny, and Thomas Peter

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Measurement report: The Urmia playa as a source of airborne dust and ice-nucleating particles – Part 1: Correlation between soils and airborne samples
Nikou Hamzehpour, Claudia Marcolli, Sara Pashai, Kristian Klumpp, and Thomas Peter
Atmos. Chem. Phys., 22, 14905–14930, https://doi.org/10.5194/acp-22-14905-2022,https://doi.org/10.5194/acp-22-14905-2022, 2022
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Cited articles

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Ahmady-Birgani, H., Ravan, P., Schlosser, J. S., Cuevas-Robles, A., AzadiAghdam, M., and Sorooshian, A.: On the chemical nature of wet deposition over a major desiccated lake: Case study for Lake Urmia basin, Atmos. Res., 234, 104762, https://doi.org/10.1016/j.atmosres.2019.104762, 2020. 
Atkinson, J. D., Murray, B. J., Woodhouse, M. T., Whale, T. F., Baustian, K. J., Carslaw, K. S., Dobbie, S., O'Sullivan, D., and Malkin, T. L.: The importance of feldspar for ice nucleation by mineral dust in mixed-phase clouds, Nature, 498, 355–358, https://doi.org/10.1038/nature12278, 2013. 
Bigg, E.: Ice Nucleus Concentrations in Remote Areas, J. Atmos. Sci., 30, 1153–1157, https://doi.org/10.1175/1520-0469(1973)030<1153:INCIRA>2.0.CO;2, 1973. 
Bish, D. L. and Plötze, M.: X-ray Powder Diffraction with Emphasis on Qualitative and Quantitative Analysis in Industrial Mineralogy, in: Advances in the characterization of industrial minerals, edited by: Christidis, G. E., EMU and Mineralogical Society, London, 9, 35–76, 2010. 
Short summary
Dust aerosols from dried lakebeds contain mineral particles, as well as soluble salts and (bio-)organic compounds. Here, we investigate ice nucleation (IN) activity of dust samples from Lake Urmia playa, Iran. We find high IN activity of the untreated samples that decreases after organic matter removal but increases after removing soluble salts and carbonates, evidencing inhibiting effects of soluble salts and carbonates on the IN activity of organic matter and minerals, especially microcline.
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