Central Tendency Changes in Mean-Annual Precipitation over the contiguous U.S. from 1970-1999 to 2040-2069 for BCSD3, BCSD5, and Difference. Source: Downscaled Climate and Hydrology Projections website. Acronym Definitions: BCSD - Bias-Correction Spatial Disaggregation; CMIP - Coupled Model Intercomparison Project.