Thirty years ago, NOAA said most global warming occurred between 1881 and 1919 – and that Earth cooled from 1921 to 1979.
Analysis of warming since 1881 shows most of the increase in global temperature happened before 1919 – before the more re-cent sharp rise in the amount of carbon dioxide in the atmosphere. said Thomas Karl, of the National Oceanic and Atmospheric Adminis-tration’s National Climatic Data Center in Asheville, N.C. While global climate warmed overall since 1881, it actually cooled from 1921 to 1979. Karl said.
Now NOAA shows the exact opposite. They show earth cooling from 1881 to 1919, and warming from 1921 to 1979.
Perhaps NOAA scientists travelled back in time and took new readings.