Focusing on 600 years of proxy data between 45 and 85 degrees north latitude, Tingley's initial result...finds that the 1990s were the warmest decade of the period and that 1995 was the warmest year.... He also found that the 20th century had the largest rate of warming of any century and that the 1600s had the largest rate of change overall...albeit in the cooling direction due to the Little Ice Age.It's not a "confirmation" of the hockey stick per se, but a completely different method that points to a very similar result.
Thursday, October 22, 2009
There's Still a Blade
I have an article in the November issue of Scientific American, "Still Hotter Than Ever," that I think is important. It's about a new mathematical method by Martin Tingley and Peter Huybers that reconstructs past temperatures from proxy data, using a Bayesian statistics approach rather than the traditional principal component analysis. Calculating up until the year 2000, it finds... a hockey stick-like result.
Posted by David Appell at 10/22/2009 06:53:00 AM