First our friends claimed that the 1945-1975 cooling never happened. Then they decided that it did happen, but was due to human generated pollution.
Just for fun, let’s play along with their silly game and accept what they say now as true.
If all that cooling after 1945 was due to pollution, then the Greenland warming since the Clean Air Act passed was due to removal of pollution.
Temperatures have almost returned to where they used to be before the pollution.
Hansen’s claimed 2 C/century trend is exaggerated by a factor of three. Temperatures in the last 65 years have only risen by 0.4 degrees.
So take your pick. You only have three options
- Climatologists were wrong in the 1970s
- Hansen is wrong now.
- Both of the above