1 Karlsruhe Institute of Technology (KIT), Campus Alpin, Institute of Meteorology and Climate Research - Atmospheric Environmental Research (IMK-IFU), Garmisch‑Partenkirchen, Germany. tanja.portele@kit.edu.
2 University of Augsburg, Institute of Geography, Augsburg, Germany. tanja.portele@kit.edu.
3 Karlsruhe Institute of Technology (KIT), Campus Alpin, Institute of Meteorology and Climate Research - Atmospheric Environmental Research (IMK-IFU), Garmisch‑Partenkirchen, Germany.
4 Tractebel Engineering GmbH, Bad Vilbel, Germany.
5 University of Augsburg, Institute of Geography, Augsburg, Germany.