Long-Term Aridity Changes in the Western United States

Cook, E. R., Woodhouse, C. A., Eakin, C., Meko, D. M., & Stahle, D. W. (2004). Long-Term Aridity Changes in the Western United States. Science, 306(5698), 1015-1018. https://doi.org/10.1126/science.1102586