Christian Birkel¹, Alicia Beatriz Correa Barahona¹, Clement Duvert², Sebastian Granados Bolaños¹, Andres Chavarria Palma¹, Ricardo Sanchez-Murillo³, Ana Maria Duran-Quesada⁴, Chris Soulsby⁵ and Harald U Biester⁶, (1)University of Costa Rica, Department of Geography and Water and Global Change Observatory, San Jose, Costa Rica, (2)Charles Darwin University, Research Institute for the Environment and Livelihoods, Casuarina, NT, Australia, (3)National University of Costa Rica, Stable Isotopes Research Group and Water Resources Management Laboratory, Heredia, Costa Rica, (4)University of Costa Rica, Department of Physics and Geophysical Research Center, San Jose, Costa Rica, (5)University of Aberdeen, Northern Rivers Institute, Aberdeen, United Kingdom, (6)Technical University of Braunschweig, Braunschweig, Germany