Here's one question for Andy Revkin: Why, specifically, did carbon dioxide choose to attack Alaska in 1976?

Climate Shifts Are Changing New Weather 'Normals' - NYTimes.com

A third is to develop a "hinge" that would place the normals on a linear trend past 1975, which Arguez said was the year the temperatures started rising.

The Big Lies About Alaska | Real Science

The period 1949 to 1975 was substantially colder than the period from 1977 to 2009, however since 1977 little additional warming has occurred in Alaska with the exception of Barrow and a few other locations. The stepwise shift appearing in the temperature data in 1976 corresponds to a phase shift of the Pacific Decadal Oscillation from a negative phase to a positive phase.