Assessing global freshwater resources and human water use is of value for a number of needs but challenging. The global water use and water availability model WaterGAP has been in development since 1996 and has served a range of applications such as assessments of global water resources and water stress, also under the impact of climate change, drought hazard quantification, Life Cycle Assessments, water (over)use and consequently depletion of water resources and a better understanding of terrestrial water storage variations (jointly with satellite observations). Here, the reader can download model output for the time period 2015-2100 that was computed by driving WaterGAP v2.2e by in total 8 GCM input datasets (climate forcings) that were generated in the ISIMIP context phase 3b (https://www.isimip.org). The data provided here are created in a run with a specific option that uses an alternative method for calculating potential evapotranspiration to approximate the climate change effect to future evapotranspiration and runoff changes (for details see the model description paper of v2.2e, currently in revision 10.5194/gmd-2023-213).

The data is available in compressed netcdf data format. The spatial resolution is 0.5 deg x 0.5 deg, the temporal resolution is monthly.
The name pattern follows the ISIMIP protocol (www.isimip.org).