Saharan dust and ice nuclei over Central Europe
- 1Institute for Atmospheric and Environmental Sciences, Goethe-University, Frankfurt am Main, Germany
- 2World Meteorological Organization, Geneva, Switzerland
- 3Institute for Applied Geosciences, Technical University of Darmstadt, Germany
- 4Institute for Atmospheric Physics, Gutenberg-University, Mainz, Germany
- 5Deptartment of Geophysics, Tel Aviv University, Tel Aviv, Israel
Abstract. Surface measurements of aerosol and ice nuclei (IN) at a Central European mountain site during an episode of dust transport from the Sahara are presented. Ice nuclei were sampled by electrostatic precipitation on silicon wafers and were analyzed in an isothermal static vapor diffusion chamber. The transport of mineral dust is simulated by the Eulerian regional dust model DREAM. Ice nuclei and mineral dust are significantly correlated, in particular IN number concentration and aerosol surface area. The ice nucleating characteristics of the aerosol as analyzed with respect to temperature and supersaturation are similar during the dust episode than during the course of the year. This suggests that dust may be a main constituent of ice nucleating aerosols in Central Europe.