The authors acknowledge with gratitude the constructive suggestions made by colleague reviewers Robert M. Hirsch and Timothy A. Cohn (USGS) and by two anonymous reviewers. Lauren Hay (USGS) provided PRMS output data. Climate-model output data were provided by the Commonwealth Scientific and Industrial Research Organization (Australia), the Institute for Numerical Mathematics (Russia), and the Center for Climate System Research (Japan), through the Program for Climate Model Diagnosis and Intercomparison at the Lawrence Livermore National Laboratory (United States). Analysis of specific model outputs in this paper does not imply endorsement of the models by the U.S. government.
Choudhury, B. J. , 1999. Evaluation of an empirical equation for annual evaporation using field observations and results from a biophysical model. J. Hydrol. 216:99–110.
Dai, A. , K. E. Trenberth , and T. Qian , 2004. A global dataset of Palmer Drought Severity Index for 1870–2002: Relationship with soil moisture and effects of surface warming. J. Hydrometeor. 5:1117–1130.
Hay, L. E. , S. L. Markstrom , R. S. Regan , and R. L. Viger , 2010. Integrated watershed scale response to climate change for selected basins across the United States. Earth Interactions in press.
Jensen, M. E. , D. C. N. Robb , and C. E. Franzoy , 1970. Scheduling irrigations using climate-crop-soil data. J. Irrig. Drain. Div. 96:25–38.
Maurer, E. P. , A. W. Wood , J. C. Adam , D. P. Lettenmaier , and B. Nijssen , 2002. A long-term hydrologically based dataset of land surface fluxes and states for the conterminous United States. J. Climate 15:3237–3251.
Priestley, C. H. B. , and R. J. Taylor , 1972. On the assessment of surface heat flux and evaporation using large-scale parameters. Mon. Wea. Rev. 100:81–92.