It Was Warmer Back Then
Posted by greg2213 on March 1, 2010
This is a YouTube video that shows what has happened to the temperatures since ’34 and the adjustments made to the temp record by Hansen & Co of NASA GISS. It probably should have been an animated gof or had some voice-over, but it does get the point across.
The green line in the graph show temps as they were prior to the adjustments, with the 30s being a bit warmer. The red line shows the adjusted version. Note how the red line then tips to match the green line.
For more background, se these posts on the same basic subject: