Climate Change Impact on Water Resources Explorer

Documentation for the users of the web application Climate Change Impact on Water Resources Explorer While adaptation to changing water resources due to climate change is necessary everywhere, information about their potential future changes has not been easily accessible to most climate change adaptation processes. The interactive web application Climate Change Impact of Water Resources (CCIWR) Explorer presents the output of a multi-model ensemble (MME) of global hydrological models. It covers all land areas of the globe except Antarctica, based on a state-of-the-art MME of global hydrological models that was generated using the ISIMIP3b protocol (Gosling et al. 2024). The Explorer provides state-of-the-art information suitable for supporting local to regional participatory climate change adaptation processes around the world. The CCIWR Explorer is unique in that it may support decisions on climate change adaptation that take stakeholder risk aversion into account. Not only does it show the projected MME median future change in total water resources, groundwater resources, and evapotranspiration, either in the four seasons or annually, it also shows which fraction of the ensemble members project a change that stakeholders consider to be hazardous. Two map views as well as “Local Insights”, percentile boxes showing the range of future changes in individual 0.5° grid cells, are provided.