Ice nucleating particles at the High Altitude Research Station Jungfraujoch

L. Lacher, U. Lohmann, E. Herrmann, A. Zipori, M. Steinbacher, Z. A. Kanji

Atmospheric Ice Nucleation Conference – Focus Meeting 9

Podium

Measurements of ice nucleating particle (INP) concentrations at the High Altitude Research Station Jungfraujoch are performed at mixed-phase cloud conditions during different seasons, in free tropospheric conditions and during times of boundary layer injections. Free tropospheric INP concentrations show little variation during all seasons. Higher values of INP concentrations were observed in winter 2016 when the measurements were influenced more often by Saharan dust. In addition, special air masses composed of marine and anthropogenic origin arriving at Jungfraujoch lead to short-term increases of INP concentrations, revealing their potential to nucleate ice.Â

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