Articles | Volume 22, issue 5
Research article
09 Mar 2022
Research article |  | 09 Mar 2022

Unveiling atmospheric transport and mixing mechanisms of ice-nucleating particles over the Alps

Jörg Wieder, Claudia Mignani, Mario Schär, Lucie Roth, Michael Sprenger, Jan Henneberger, Ulrike Lohmann, Cyril Brunner, and Zamin A. Kanji

Data sets

Weather Station Davos Wolfgang J. Wieder

Aerosol Data Davos Wolfgang J. Wieder and C. Rösch

Aerosol Data Weissfluhjoch J. Wieder, C. Mignani, and C. Rösch

Short summary
We investigate the variation in ice-nucleating particles (INPs) relevant for primary ice formation in mixed-phased clouds over the Alps based on simultaneous in situ observations at a mountaintop and a nearby high valley (1060 m height difference). In most cases, advection from the surrounding lower regions was responsible for changes in INP concentration, causing a diurnal cycle at the mountaintop. Our study underlines the importance of the planetary boundary layer as an INP reserve.
Final-revised paper