During the ongoing International Mountain Conference 2019 hosted by the University of Innsbruck, Marta Galvagno, Mathias Rotach and Georg (in ‘action’ in picture below), organized a workshop on “Challenges in Quantifying and Simulating the Land-Atmosphere Exchange in Mountain regions” during which an international group of scientists with a diverse range of backgrounds discussed the major uncertainities in land-atmosphere exchange and how to address these.