The dataset is produced using the WRF model with the NOAH lad suface model to investigate the effects of shrub expansion on the near surface atmosphere in northern Fennoscandia. The data consist of a reference simulation and two simulations where the shrub cover has been perturbed/expanded. The simulations are further described in the paper (DOI: http://dx.doi.org/10.5194/bg-2016-373). The data consists of the WRF output used for analysis int he paper.