It is best to plot using GHCN unadjusted data, and one should include the Hadl/Reyn ocean series for completeness and compare apples with apples by plotting January only data change (i.e trend selection) through the full 1951-2007 data set not just January 1971 of the default selection.
Hit the link above in #11.. so the map data and zonal average plot can be seen together.
Thanks for the response.
Would you help me understand your post a little better?
I looked at the climate audit page - it looks like the raw data is the same as the NASA page but there are two different fits to the data... Is that the main point? I guess you correctly figured that the chart I used was from NASA.
BTW, 1950/1951 is an imperfect choice to get a good view since 6 years earlier global warming basically stopped (one problem with human caused global warming is that global warming basically stopped between 1945 and 1976).