"The past 30 years have been unusually warm across the northern Rockies compared to the last 800 years," said Gregory Pederson, research ecologist for the U.S. Geological Survey and lead author of the paper. "What's worrying is that it may indicate a point when we have generally synchronous decline
Mountain snow records don't go back far beyond 1950, so the team, led by Gregory Pederson at the U.S. Geological Survey, looked at tree rings at 66 sites from B.C. to Colorado to get a read on snowpack levels over the past 800 years.
Date: Jun 10, 2011
Category: Sci/Tech
Source: Google
1000-Year Record Shows Unusual Snowpack Declines -- Study
Numerous studies have documented snowpack decline over the past 50 to 100 years, but Gregory Pederson, a USGS research scientist, wondered how recent losses stacked up against those of the past millennium.