By Steve Goddard

GISS appears to be working hard to make 2010 the hottest year ever. As you can see in the graph above, they show 2010 with much more area above the 1998 line than below. I did a numerical integration of the graph above, and found that they have 2.8 times as much area with 2010 warmer than they do with 2010 cooler.

How does this compare with other data sources? HadCrut has been adjusting their data upwards, but even using their upwards adjusted numbers, their ratio of above to below area is only 0.04. Seventy times lower than GISS.

UAH has 0.12 times as much area above as they have below. Twenty-five times lower than GISS.

RSS has 0.07 times as much area above as below. Forty times lower than GISS.

The chart below shows how much of an outlier GISS is.

GISS is the only one of the four which shows 2010 as #1. The others aren’t even close. It must be their almost non-existent better Arctic coverage.

Conclusion: Dr. Hansen thinks that warming has continued unabated since 1998, while HadCrut, RSS and UAH think it has stopped or slowed to a crawl.

GISS

Had Crut

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