The data manipulation couldn't be more brazen. Northern Hemisphere climate model code:
; Apply a VERY ARTIFICAL correction for decline!!
2.6,2.6,2.6]*0.75 ; fudge factor
if n_elements(yrloc) ne n_elements(valadj) then message,’Oooops!’
"It flattens a period of warm temperatures in the 1940s 1930s — see those negative coefficients? Then, later on, it applies a positive multiplier so you get a nice dramatic hockey stick at the end of the century."
Here's a model of the data:
This corroberates the data manipulation apparent in other models and emails:
"I’ve just completed Mike’s Nature trick of adding in the real temps to each series for the last 20 years (ie from 1981 onwards) amd [sic] from1961 for Keith’s to hide the decline."
"Uses “corrected” MXD – but shouldn’t usually ; plot past 1960 because these will be artificially adjusted to look closer to the real temperatures."
"Because of the evidence for loss of temperature sensitivity after 1960 (1), MXD data were eliminated for the post-1960 interval."
"; Specify period over which to compute the regressions (stop in 1940 to avoid the decline"
Related.... The scandal spreads to New Zealand!