As I also reported in a later post in 2014, NOAA offered a toolkit that graphed the differences between the old and new versions.
Below is a screenprint of the annual data for Alabama, which I posted at the time, and it shows just how much temperatures have been reduced during that highly inconvenient warm period in the 1930s and 40s.
As with the November figure, there is an adjustment of about 1F.
71% of the earth is covered by ocean, water is a 1000 times denser than air and the mass of the oceans are 360 times that of the atmosphere, small temperature changes in the oceans doesn’t only modulate air temperature, but it also affect the CO2 level according to Henry’s Law.
The reason it is called “Law” is because it has been “proven”!