Written by fatih al-farahat in , ,


Hiding the decline -- NOT! Michael Mann's hockey stick holds in the real world of real temperatures from real thermometers

Hiding the decline -- NOT!



The graph above, which appeared on the cover of a 1999 report from the World Meteorological Organization, blends historical “proxy” records of temperature with recent records from thermometers.
World Meteorological Organization  

"The graph above, which appeared on the cover of a 1999 report from the World Meteorological Organization, blends historical 'proxy' records of temperature (from tree rings and other sources) with recent records from thermometers. The graph below, which presents the thermometer records as a separate black line, shows that the proxy records diverged from the thermometer records in recent decades. Scientists preparing the top graph discussed how to 'hide the decline' in the green line, which was taken from recent tree-ring analyses they considered unreliable."


Climatic Resarch Unit/ East Anglia University

Tenney here:  Have a good look at the black line -- it is based on REAL temperatures from thermometers, not from any type of proxy.  The green line represents assumed proxy temperatures from ONE set of trees from ONE geographical location, NOT all the sets of trees studied from all over the world.  This particular set of trees went haywire after 1961 -- but the other sets of trees did not.  This is a known problem with one set of data points, and everything about it has been published in the peer-reviewed literature for more than 10 years, for all to see.

Thus, the "trick" mentioned in the hacked CRU e-mails is simply a common trick used by researchers to adjust for a known problem in a single data set.

This is typical of the denialists to smear someone with the word "fraud" when REAL temperatures were used, as was commonly known by all tree-ring proxy researchers.