In my previous GISS/USHCN post I reconstructed what current GISS US should look like by calculating the USHCN yearly adjustments and subtracting them from the current GISS data. I came up with this.
Then I remembered that John Daly saved off a version of GISS US temperatures in 1999.
The graph below plots 1999 GISS and my reconstructed GISS
Bingo, we have a pretty good match!. This proves that the post 2000 USHCN adjustments are much larger (more than 200%) than they are publishing. Game over. They show 0.5F, when the real adjustments are closer to 1.2F
The graph below shows the difference between my GISS reconstruction and the 1999 published data. You can see that they were already cooling the past in 1999
But nothing like they are now!