Phil Jones claims to be able to do accurate comparisons vs. temperatures from 1850. This claim is ridiculous, because in 1850 the coverage of Northern Hemisphere land masses was less than 20% – as seen in the picture below.
http://www.cru.uea.ac.uk/cru/data/temperature/
http://hadobs.metoffice.com/hadcrut3/data/HadCRUT3v.nc
you’ve forgotten to smooth by 1200km?
Looks like they need about 5000km.
Physics was different, back then.