Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions

Kevin J. Anchukaitis, Rob Wilson, Keith R. Briffa, Ulf Büntgen, Edward R. Cook, Rosanne D'Arrigo, Nicole Davi, Jan Esper, David Frank, Björn E. Gunnarson, Gabi Hegerl, Samuli Helama, Stefan Klesse, Paul J. Krusic, Hans W. Linderholm, Vladimir Myglan, Timothy J. Osborn, Peng Zhang, Milos Rydval, Lea SchneiderAndrew Schurer, Greg Wiles, Eduardo Zorita