“Is Jim Hansen’s Global Temperature Skillful?” Guest Post by John R. Christy

http://pielkeclimatesci.wordpress.com/2010/08/13/is-jim-hansens-global-temperature-skillful-guest-weblog-by-john-christy/

The result suggests the old NASA GCM was considerably more sensitive to GHGs than is the real atmosphere since (a) the model was forced with lower GHG concentrations than actually occurred and (b) still gave a result that was significantly warmer than observations.