A new post containing a cartoon from Josh will appear every hour. At the end of the 24 hours, everything will be collated on a single page. Readers are encouraged to post skeptical arguments below, as well as offer comments on what has been seen from the Climate Reality Project so far.
Hockey sticks anyone?
The famous hockey stick graph was all about tree rings, and making the Medieval Warm Period disappear:
There is a new and important study on temperature proxy reconstructions (McShane and Wyner 2010) published in the Annals of Applied Statistics According to Steve McIntyre, this is one of the “top statistical journals”. This paper is a direct and serious rebuttal to the proxy reconstructions of Mann. It seems watertight on the surface, because instead of trying to attack the proxy data quality issues, they assumed the proxy data was accurate for their purpose, then created a bayesian backcast method. Then, using the proxy data, they demonstrate it fails to reproduce the sharp 20th century uptick.
Now, there’s a new look to the familiar “hockey stick”.
And then there’s Yamal.
One tree made the Mann Hockey Stick:
MIRROR POSTING: YAD06 – the Most Influential Tree in the World
And, can you even measure temperature with trees?
For the behind the scenes climate maneuvering that went into this, and why many people doubt the Hockey Stick, I highly recommend reading Caspar and the Jesus Paper as well as The Hockey Stick Illusion:
Josh put a lot of work into these, so if you like the work, drop by the tip jar. Unlike Gore’s CRP, he won’t spam you asking for more. Buy him a beer, he’s worked a long time bringing us enjoyment with only some “attaboys” sent his way.