Science Source

Independent effects of temperature and precipitation on modeled runoff in the conterminous United States

Uses a water-balance model to simulate the time series of water-year runoff for 4 km × 4 km grid cells for the conterminous United States during the 1900–2008 period
Uses model outputs to examine the separate effects of precipitation and temperature on runoff variability
Finds that overall, water-year runoff has increased in the conterminous United States and precipitation has accounted for almost all of the variability in water-year runoff during the past century
Finds, in contrast, that temperature effects on runoff have been small for most locations in the United States even during periods when temperatures for most of the United States increased significantly