Remote sensing of water use and water stress in the African savanna ecosystem at local scale – Development and validation of a monitoring tool - Andreu, Ana; Dube, Timothy; Nieto, Hector; Mudau, Azwitamisi E.; González-Dugo, María P.; Guzinski, Radoslaw; Hülsmann, Stephan (Physics and Chemistry of the Earth, Parts A/B/C, 2019)