Evaluating multi-year, multi-site data on the energy balance closure of eddy-covariance flux measurements at cropland sites in southwestern Germany. - Eshonkulov, Ravshan; Poyda, Arne; Ingwersen, Joachim; Wizemann, Hans-Dieter; Weber, Tobias K. D.; Kremer, Pascal; Högy, Petra; Pulatov, Alim; Streck, Thilo (Biogeosciences, 2019)