Monday, December 28, 2009

Broken Hockey Sticks and Other Climate Change Deceptions

Read Biship Hills Blog "The Yamal implosion" for the best explanation I've read to date about the infamouse "hockey stick" graph that shows a supposed unprecedented warming in the 20th century. But…When Steve McInty revised the dataset with a greater number of core samples from Fritz Schweingruber's collection, which Keith Briffa left out of his analysis, the results were mind boggling. The sharp up spike that appears in Briffa’s graph at the end of the twentieth century had vanished.

Here is a graph depicting the IPCC (Keith Briffa & Mann) "Hockey Stick" that shows dramatic warming in the 20th century:



Here is Steve McIntyre's graph overlaid on top of Briffa's "Hockey Stick":