Data and code for the Holdrege et al. (2022) manuscript entitled 'Precipitation intensification increases shrub dominance in arid, not mesic, ecosystems' published in Ecosystems (doi: 10.1007/s10021-022-00778-1). This repository contains the results from simulations of sagebrush dominated plant communities conducted across 200 sites in the western United States. Simulations were run for ambient conditions as well as increased precipitation intensity and warming. Refer to the manuscript for details on the methods. This repository contains the summarized model output (data) and the R code that uses this data to compute the statistics and create the figures presented in the manuscript. See the README.md and data_dictionary.md files for more information on the code and data, respectively. Note, the .git subfolder provided here contains the git (version control history) files, and the users can ignore these.