Hide the decline!
Mike’s “nature trick”
[T]he Team had a problem: actual reconstructions “diverge” from the instrumental series in the last part of 20th century. For instance, in the original hockey stick (ending 1980) the last 30-40 years of data points slightly downwards. In order to smooth those time series one needs to “pad” the series beyond the end time, and no matter what method one uses, this leads to a smoothed graph pointing downwards in the end whereas the smoothed instrumental series is pointing upwards — a divergence. So Mann’s solution was to use the instrumental record for padding, which changes the smoothed series to point upwards as clearly seen in UC’s figure (violet original, green without “Mike’s Nature trick”).
But read the whole thing.
Examiner.com
As embarrassing as the e-mails are, some of the documents are more embarrassing. They include a five-page PDF document titled The Rules of the Game, that appears to be a primer for propagating the AGW message to the average subject/resident of the United Kingdom. The document suggests that it is a precis of a longer document housed at the Web site of the UK Department for Environment, Food and Rural Affairs.
More. The Sound Of Mature Science …
via James M.