A few weeks ago, Hansen was caught massively altering the temperature record in Iceland – to produce a non-existent warming trend, and disappear that pesky warm 1930s and 1940s.
Paul Matthews points out that Hansen has a new version of the graph, which isn’t as bad as the one from a few weeks ago, but has now disappeared the pre-1940 warming.
Even with the recent corrections, GISS is still not in agreement with CRUTEM, which shows no warming since 1930. The non-homogenized GISS data is supposed to be unadjusted historical temperatures. How did the past change?