Articles | Volume 16, issue 14
Research article
25 Jul 2016
Research article |  | 25 Jul 2016

Ice nucleating particles in the Saharan Air Layer

Yvonne Boose, Berko Sierau, M. Isabel García, Sergio Rodríguez, Andrés Alastuey, Claudia Linke, Martin Schnaiter, Piotr Kupiszewski, Zamin A. Kanji, and Ulrike Lohmann

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Cited articles

Adam, F., Rodríguez, S., Cuevas E., Alastuey, A., and Querol, X.: Detection of the Saharan dust air layer in the North Atlantic free troposphere with AERONET, OMI and in-situ data at Izaña Atmospheric Observatory, in: Symposium on Atmospheric Chemistry and Physics at mountain sites, 8–10 June 2010, Interlaken, Switzerland, 2010.
Ansmann, A., Mattis, I., Müller, D., Wandinger, U., Radlach, M., Althausen, D., and Damoah, R.: Ice formation in Saharan dust over central Europe observed with temperature/humidity/aerosol Raman lidar, J. Geophys. Res.-Atmos., 110, D18S12,, 2005.
Atkinson, J., 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,, 2013.
Berezinski, N., Stepanov, G., and Khorguani, V.: Atmospheric Aerosols and Nucleation, chap. Ice-forming activity of atmospheric aerosol particles of different sizes, Springer Berlin/Heidelberg, 1988.
Bigg, E. K. and Miles, G. T.: Stratospheric ice nucleus measurements from balloons, Tellus, 15, 162–166,, 1963.
Short summary
Mineral dust is known to be among the most prevalent ice-nucleating particles (INPs) in the atmosphere, playing a crucial role for ice cloud formation. We present 2 months of ground-based in situ measurements of INP concentrations in the free troposphere close to the largest global dust source, the Sahara. We find that some atmospheric processes such as mixing with biological particles and ammonium increase the dust INP ability. This is important when predicting INPs based on emissions.