1. Institute of Crop Science and Resource Conservation (INRES)University of Bonn Katzenburgweg 5 53115 Bonn Germany
2. Center for Remote Sensing of Land Surfaces (ZFL)University of Bonn 53113 Bonn Germany
3. Remote Sensing Research Group, Department of GeographyUniversity of Bonn Meckenheimer Allee, 166 53115 Bonn Germany
4. Center for Development ResearchUniversity of Bonn Walter‐Flex Str. 3 53113 Bonn Germany