Baloney. That phony “hockey stick” crap was his all the way.
I grew up in PA and I can’t tell you how disappointed I am in PSU. When is honor and integrity in the leaders of our institutions? I guess it went away with all of the political correctness.
More complete report;
http://kdka.com/wireapnewsfnpa/Penn.St.to.2.1467467.html
What Mann did was find some Lowland Larch (from a far different microclimate) and use them for his 1850 to mid 1900s period.
He didn't tell anyone he was using different tree rings from different elevations in different areas yet he knew.
That's because he wouldn't have found the people to get the samples from unless he read their reports in peer reviewed journals where they described the problem.