Watts Up With That?

Guest Post by Willis Eschenbach

Over at Bishop Hill, the Bish has an interesting thread about a new proxy reconstruction by Rob Wilson et al. entitled “Last millennium northern hemisphere summer temperatures from tree rings: Part I: The long term context” , hereinafter Wilson 2016. The paper and the associated data are available here. They describe the genesis of the work as follows:

This work is the first product of a consortium called N-TREND (Northern Hemisphere Tree-Ring Network Development) which brings together dendroclimatologists to identify a collective strategy for improving large-scale summer temperature reconstructions.

At first I was stoked that they had included an Excel spreadsheet with the proxy data. Like they say in the 12-step programs, Hi, my name’s Willis, and I’m a data addict … anyhow, here’s a graph of all of the data, along with the annual average in red.

53 proxies wilson 2016Figure 1. Plot of the…

View original post 1,591 more words


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