Abstract
A scheme was developed to estimate the change in national water resources under climate change. Using a distributed global hydrological model, 252 sets of simulation were conducted shifting temperature from -5 to +15 degree Celsius, and precipitation from -75% to +200% from current climate, and a database of national water resources under climate change was developed. The scheme requires little computational resources, because it just needs to refer the database. Therefore, it is suited to couple with climate change policy support models in which climate condition varies quite frequently. The output of this scheme agrees well with that of the original detailed model with an uncertainty of±20%.
