1. Swiss Federal Institute for Forest Snow and Landscape Research (WSL) Birmensdorf Switzerland
2. Agrometeorological Research Center German Weather Service (DWD) Braunschweig Germany
3. Department of Environmental Systems Science ETH Zürich Zürich Switzerland
4. Department of Geosciences University of Münster Münster Germany
5. Department of Soil and Environment Forest Research Institute Baden Württemberg Freiburg Germany