This animation takes you through 130 years of historical climate anomalies and through 100 years of climate anomalies predicted by a high emission scenario (A2). The term “anomaly” means a departure from a reference value or long-term average. For the temperature anomaly animation, the reference value is the average temperature over the period 1970-1999. A positive anomaly value indicates that the observed temperature was warmer than the average temperature from 1970-1999, while a negative anomaly indicates that the observed temperature was cooler than the average temperature from 1970-1999.
These animations are based on data from National Center for Atmospheric Research (NCAR)'s Community Climate System Model, version 3 (CCSM3, http://www.cesm.ucar.edu, 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).