The West: 70 percent more warming

   

An analysis by the Rocky Mountain Climate Organization, using data from the National Oceanic and Atmospheric Administration (the parent agency of the National Weather Service) shows that worldwide temperatures in the last five years averaged 1.0 degree warmer than the 20th century average.

  The American West has warmed 70 percent more than the globe as a whole, and more than the rest of the United States outside of Alaska. The greatest western warming has been in the Colorado River basin, where it affects the snow-fed river that is the most important water source of the interior West.          

1908-2007 Temperatures Compared to 20th Century Averages

 
Five-year average temperatures for 1908-12, 1913-17, and so on through 2003-2007, compared to 20th centuray averages for each area. Analysis by the Rocky Mountain Climate Organization. Data from the National Oceanic and Atmospheric Administration. Learn more from the RMCO/NRDC report, Hotter and Drier: The West's Changing Climate.  
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