Late 20th Century Hydrologic Change in Western North America: Regional Impacts and the Role of Climate

水文气候的变化和变化直接影响北美西部的淡水供应。上个世纪末，该地区的径流表现出年流量的变化性增加，西部最大流域的同步性增加。由于土地利用变化似乎起的作用较小，PI将研究北美西部冬季降水和相关流量对厄尔尼诺-南方涛动变化的敏感性。PI将使用观测和多模式集合积分来研究年代际变化。这一项目的更广泛影响将是增加水资源管理所需的科学知识。

Hydroclimatic variations and change directly impact the freshwater supplies in western North America. Streamflow in this region has shown increased variability of annual flow volumes and increasing synchroneity in the largest basins in the west towards the end of last century. As land-use change seems to play a lesser role, the PI will study the sensitivity of the western North American winter precipitation and related streamflow to El Nino-Southern Oscillation variations. The PI will use observations and multi-model ensemble integrations to study the decadal variations. The broader impact of this project will be an increase of the scientific knowledge required in water resources management.