1. Max Planck Institute for Biogeochemistry Jena Germany
2. Laboratory of Geo‐Information Science and Remote Sensing Wageningen University & Research Wageningen The Netherlands
3. Gamma Remote Sensing Gümligen Switzerland
4. Departamento de Ciências e Engenharia do Ambiente DCEA Faculdade de Ciências e Tecnologia FCT Universidade Nova de Lisboa Caparica Portugal