GHCN v1 vs v3 North America, Region 4 | Musings from the Chiefio

realistically, the comparison of this graph with the one for Asia or Oceana is just stunning. The vast bulk of any “rising average” is not being carried by the ‘dead flat’ of Asia for 130 years, nor the ’1/2 C wobble with 1/4 C drift” of Oceana. It will come out of places like this where the temperatures are raised dramatically.

But if all the “work” is being done by one or two small geographies in only one hemisphere, is it really Global? And is it really “warming”?

...IMHO the “warming” in North America is entirely an artifact of moving thermometers to airports, swapping to electronic versions that have different thermal issues and different adjustments, Urban Heat Island as we developed more than places like Africa (that has cooled) and perhaps some ‘odd’ data adjustments as the ones here that put more change into the data for the same time and place than the actual ‘warming signal’ we are seeking.