Speculation that the Arctic Oscillation is a Sign of Global Warming


Surface Air Temperature Trends in Winter

 

 

 

 

  • The High Pressure Regimes show an overall warming

     

  • The Aleutian and North Atlantic Lows show a cooling trend

     

     

     


    This image indicates a trend toward the warm negative phase over the last few decades.

     



    Surface Air Temperatures over Siberia

     

     

    http://www.gi.alaska.edu/snowice

    Mean Annual Air Temperatures in Churapcha, Russia show a slight increase in temperature from the 1950's to the present.

     



    Animated visual of the Arctic Oscillation

     

     

  • The movie shows that oscillation from the Cool Positive Phase to the Warm Negative Phase are frequent, but not regular

     

     

  • Warming of the Pacific is the result of the weakening of the Aleutian low, preventing it from drawing down the cool, Siberian Air

     


    Pacific Decadal Oscillation shown in cool phase. CLICK on image to animate!