The Hockey Schtick
A correspondence published today in Nature Climate Change is a damning indictment of
the
updated HADCRUT global temperature database, which is used as the basis
of all of the other land-based temperature databases including GISS and
BEST.
The correspondence demolishes the claim of Ji et al
that "the global climate has been experiencing significant warming at
an unprecedented pace in the past century" as well as the reliability of
the HADCRU database to determine global temperature trends of the past
164 years. According to the authors, conclusions about global
temperature change cannot be reliably determined prior to the 1950's due
to the poor spatiotemporal coverage prior to the 1950's and trends
determined from the early HADCRU data are "meaningless and
"artificially flattened."
Likewise, all
climate model "tuning" based on the "meaningless" global temperature
trends prior to the 1950's are therefore "meaningless" GIGO as well. "
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