This animation takes you through 200 years of potential biomass accumulation, predicted across North America by a simple model using either historical (left; 1970:1999 normal) or future (right; 2070:2099 normal, a2 scenario) temperature and precipitation. It also graphically displays the biomass accumulation for 5 North American biomes. Data from National Center for Atmospheric Research (NCAR)'s Community Climate System Model, version 3 (CCSM3,, supported by the Directorate for Geosciences of the National Science Foundation and the Office of Biological and Environmental Research of the U.S. Department of Energy) and distributed through the University of New Hampshire, EOS-WEBSTER Earth Science Information Partner (ESIP).