ET of a mosaic landscape – measurements and modelling

Evapotranspiration changes with landuse, soil conditions and meteorological conditions. Landscapes in middle Europe are typically of mosaic pattern at micro to local scale with different landuses adjacent to one another and we therefore have areas of different ET. This work shall address how ET changes with landuse based on 10 years of Eddy-Covariance data for different landuses. In a first step, it will be focussed on two landuses (coniferous forest and grassland). ET obtained via measurements will be compared to ET obtained via modelling by a using a one dimensional soil-vegetation transfer scheme and a machine learning approach using gradient boosting. Results will be analysed whether typical characteristic properties of the respective landscape are preserved (e.g. Bowen ratio) as well as differences between land uses (e.g. differences in yearly ET estimates).