Atmos. Chem. Phys. Discuss., 11, 2733-2748, 2011
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Atmospheric ice nuclei in the Eyjafjallajökull volcanic ash plume
H. Bingemer1, H. Klein1, M. Ebert2, W. Haunold1, U. Bundke1, T. Herrmann2, K. Kandler2, D. Müller-Ebert2, S. Weinbruch2, A. Judt1, K. Ardon-Dryer3, Z. Levin3, and J. Curtius1
1Institute for Atmospheric and Environmental Sciences, Goethe-University, Frankfurt/M, Germany
2Institute for Applied Geosciences, Technical University of Darmstadt, Germany
3Department of Geophysics and Planetary Science, Tel Aviv University, Tel Aviv, Israel

Abstract. Explosive volcanism affects weather and climate. Primary volcanic ash particles which act as ice nuclei (IN) can modify the phase and properties of cold tropospheric clouds. During the Eyjafjallajökull volcanic eruption we have measured the highest ice nucleus number concentrations (>600 L) in our record of 2 years of daily IN measurements in central Germany. Even in Israel, located about 5000 km away from Iceland, IN were as high as otherwise only during desert dust storms. These measurements are the only ones available on the properties of IN in the Eyjafjallajökull plume. The measured high concentrations and high activation temperature (−8 °C) point to an important impact of volcanic ash on microphysical and radiative properties of clouds through enhanced glaciation.

Citation: Bingemer, H., Klein, H., Ebert, M., Haunold, W., Bundke, U., Herrmann, T., Kandler, K., Müller-Ebert, D., Weinbruch, S., Judt, A., Ardon-Dryer, K., Levin, Z., and Curtius, J.: Atmospheric ice nuclei in the Eyjafjallajökull volcanic ash plume, Atmos. Chem. Phys. Discuss., 11, 2733-2748, doi:10.5194/acpd-11-2733-2011, 2011.
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