On the Significance of the 1976 Pacific Climate Shift in the Climatology of Alaska

Brian Hartmann and Gerd Wendler
Geophysical Institute, University of Alaska Fairbanks, Alaska 99775

Abstract The 1976 Pacific climate shift is examined and its manifestations and significance in Alaskan climatology during the last half-century are demonstrated. The Pacific Decadal Oscillation Index shifted in 1976 from dominantly negative values for the 25-year time period 1951-1975 to dominantly positive values for the period 1977-2001. Mean annual and seasonal temperatures for the positive phase were up to 3.1°C higher than for the negative phase.

Citation 2005, Journal of Climate, Vol 18, 4824-4839.
Financial support was obtained from the State of Alaska.