Go to RealClimate and read the top entry, "Mountains and Molehills". Also read all the discussion entries for additional information. Don't miss #66 and #128. The first thing to note is that the initial mistake was at NOAA.
I’ll give you an “A” for persistence in defending this BS political hoax!
What many pepople are beginning to suspect is that the mistakes admitted are in allowing the mistakes of data being discovered; look for the modelers to hold this even closer to the chest from now on.
How long have I been questioning the practice of adjusting the raw data instead of creating two models for comparison?