Increase in Ice Nucleation Efficiency of Feldspars, Kaolinite and Mica in Dilute NH3 and NH4+-containing Solutions

Anand Kumar1, Claudia Marcolli1,2, Beiping Luo1, Ulrich Karl Krieger1 and Thomas Peter1, (1)ETH Swiss Federal Institute of Technology Zurich, Institute for Atmosphere and Climate Science, Zurich, Switzerland, (2)Marcolli Chemistry and Physics Consulting GmbH, Zurich, Switzerland