Florian Marcus Hellwig, Friedrich Schiller University Jena, Department for Earth Observation, Germany; Thomas Jagdhuber, Anke Fluhrer, German Aerospace Center (DLR), Microwaves and Radar Institute (HR), Germany; Clémence Dubois, Friedrich Schiller University Jena, Department for Earth Observation, Germany; David Chaparro, German Aerospace Center (DLR), Microwaves and Radar Institute (HR), Spain; Konstantin Schellenberg, Friedrich Schiller University Jena, Department for Earth Observation, Germany; María Piles, University of Valencia, Image Processing Laboratory, Spain; Christiane Schmullius, Friedrich Schiller University Jena, Department for Earth Observation, Germany; Dara Entekhabi, Massachusetts Institute of Technology (MIT), Department of Civil and Environmental Engineering, United States