摘要：Future climate change will likely to increase the frequency and severity of droughts in many regions of the U.S., especially in the southwestern states, thus further will reduce the water supply in those states. On the water demand side, the population of the U.S. also moves to the southwestern states (both domestic and international migrants). Coupling the projections of water supply and demand, we generate the relative water stress index for the contiguous U.S. counties for the years 2020, 2030, 2040, and 2050. We find a worsening water stress situation, especially in the western U.S. Meanwhile, we find that some metropolitan areas in the east may also have severe water stress despite good water supply.
关键词：Climate change;water supply and demand;human migration
