Xanthos simulates historical and future global water availability on a monthly time step at a spatial resolution of 0.5 geographic degrees. xanthos was designed to be extensible and used by scientists that study global water supply and work with GCAM. Xanthos uses a user-defined configuration file to specify model inputs, outputs and parameters. It has been tested using actual global data sets and the model is able to provide historical observations and future estimates of renewable freshwater resources in the form of total runoff, average streamflow, potential evapotranspiration, actual evapotranspiration, accessible water, hydropower potential, and more.

Code Repository: https://github.com/JGCRI/xanthos