One-third of Arctic sea ice disappeared between 1890 and 1940 when CO2 levels were below 310 PPM.
13 Oct 1940, Page 76 – Hartford Courant at Newspapers.com
The facts wreck global warming theory, so NASA quite predictably responded by erasing the 1940’s Arctic warmth.
Data.GISS: GISS Surface Temperature Analysis
Data.GISS: GISS Surface Temperature Analysis
According to the article above, peak ice thickness in 1940 was 218 cm. – which is considerably less than the current peak ice thickness.
CICE_combine_thick_SM_EN_20171107.png
There are many indications that the 1940s were as warmer or warmer than the present, and that government climate scientists intentionally erased the warmth.
Global warming is not about science. It is about billions of dollars of government funding corrupting academia.
Read more at Real Climate Science
And Al Bore wasnt around nerither was Greenpests(Greenpeace)The Audubon Society was still into Birds the Sierra club was however always a bunch of wackos and DiCaprio was.nt around and FDR was in the oval office and WW II was getting underway and we had better things to worry about then fake things like Climate Change