Accelerated Warming

A study from the Pacific Northwest National Laboratory called "Near-term acceleration in the rate of temperature change" finds

that present trends in greenhouse-gas and aerosol emissions are now moving the Earth system into a regime in terms of multi-decadal rates of change that are unprecedented for at least the past 1000 years.

Update (April 4):  Joe Romm writes more about the study and reports that climatologist Kevin Trenberth believes a jump in warming is imminent.

Update (June 20):  Alaska's weather is described as "broken".