text: If you actually go to Mann et al 2005 to see how it supposedly supports the claims here, youll not find much that actually supports any of the claims. The context is a "tame network" like the one that I discussed in connection with the VZ pseudoproxies a little while ago. Like VZ erik167, they constructed pseudoproxies from gridcells information from a GCM mixed with equal amounts of white noise a "tame" network. Most of the article is about "CPS" methods i.e. averaging scaled versions of the series. If you know that the proxies all have equal amounts of white noise, this system works pretty well and is probably as good as you can get. Heres the description of their setup in Mann et al 2005: