HADCRUT4 hates 1998

Once upon a time there was a global average temperature set call HADCRUT3.

HADCRUT3 loved 1998. 4 out of the top 10 warmest months were from 1998.

year month anomaly
1998 Jul 0.671
1998 Apr 0.647
2007 Jan 0.61
2002 Mar 0.609
1998 Jun 0.606
2002 Jan 0.598
2010 Mar 0.583
2010 Apr 0.571
2003 Oct 0.566
1998 Mar 0.548

And then along came HADCRUT4 whose primary purpose seems to be to make sure the graph of the last 15 years slopes up instead of down.

HADCRUT4 hates 1998. Not only did 2 months from 1998 drop out of the top 10, but Jan 2007 was made .208C warmer than the old Jan 2007.

year month anomaly
2007 Jan 0.818
2002 Mar 0.689
2006 Dec 0.687
2010 Apr 0.673
2010 Mar 0.662
1998 Jul 0.66
2002 Jan 0.66
1998 Apr 0.611
2003 Oct 0.602
2010 Jul 0.601

Why? I have no idea.

Paul Homewood has more. Take note of his footnote. There are no new stations in Antarctica. It looks like maybe 6 new stations south of the equator … and we know it is cooling in the south.

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