Surface Moisture and Vegetation Cover Analysis for Drought Monitoring in the Southern Kruger National Park Using Sentinel-1, Sentinel-2, and Landsat-8. - Marcel Urban; Christian Berger 004; Tami E. Mudau; Kai Heckel; John Truckenbrodt; Victor Onyango Odipo; Izak P. J. Smit; Christiane Schmullius (Remote. Sens., 2018)