1. Chair of Soil Physics, Bayreuth Center of Ecology and Environmental Research (BayCEER) University of Bayreuth, Universitätsstraße 30 95447 Bayreuth Germany
2. Institute of Environmental Science and Geography University of Potsdam Karl‐Liebknecht‐Str. 24‐25 14476 Potsdam Germany
3. Laboratory for Neutron Scattering and Imaging Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen Switzerland
4. Department of Land, Air and Water Resources University of California Davis Davis CA 95616 USA