Measurements of ice nucleating particle concentrations at 242 K in the free troposphere

Larissa Lacher1, Ulrike Lohmann2, Yvonne Boose3, Assaf Zipori4, Erik Herrmann5, Nicolas Bukowiecki6, Martin Steinbacher7, Ellen Gute8 and Zaminhussein A Kanji2, (1)ETH Zurich, Zurich, Switzerland, (2)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (3)ETH Swiss Federal Institute of Technology Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (4)Hebrew University of Jerusalem, Jerusalem, Israel, (5)Paul Scherrer Institute, Villingen, Switzerland, (6)Paul Scherrer Institute, Villigen PSI, Switzerland, (7)Empa, Duebendorf, Switzerland, (8)University of Toronto, Chemistry Department, Toronto, ON, Canada