Novelty and International Appeal Statement:
Quantitative knowledge about ecohydrological partitioning in different types of urban green space is important. We present novel high-resolution isotope data of atmospheric vapour (δv) measured continuously over several month in an urban green space. To our knowledge such data have not been measured in an urban green space setting with the goal to increase understanding evapotranspiration from different urban vegetation cover. We also detected occasional dis-equilibrium between vapour and precipitation isotopes.