This map shows recent changes in Earth's surface air temperatures. The colors indicate the temperatures in the decade around 2000 as compared to average values from about 40 years earlier. Specifically, the colors compare average temperatures during the years 1995 through 2004 versus the averages from 1940 through 1980. The global averge temperature increased about 0.42 C during this time.
Map image courtesy of Robert A. Rohde and the Global Warming Art pr