Following Ed Hawkins lovely Global Temperature Change spirograph I thought I would add a few more centuries of data. Just for balance.
I created the little video (using an iPad) based on the graph from Dr. Judith Curry’s presentation (Hannhijarvi et al slide) but it is only an approximation. Ed's version for comparison is here.
It seems a couple of readers have had a hard time following the links and locating their AR5 so here is the IPCC graph that the cartoon very approximately represents.