1. Soil Physics Bayreuth Center of Ecology and Environmental Research (BayCEER) University of Bayreuth Universitätstrasse 30 D‐95447 Bayreuth Germany
2. Centre d'Imagerie BioMédicale École Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
3. Swiss Light Source Paul Scherrer Institute 5232 Villigen Switzerland
4. Earth and Life Institute Université catholique de Louvain Croix du Sud L7.05.02 B‐1348 Louvain‐la‐Neuve Belgium
5. Agrosphere Forschungszentrum Juelich GmbH D‐52425 Juelich Germany