Last month GISS extrapolated the map on the left above (white is missing data) to the map on the right. Their algorithm creates a map showing almost the entire Arctic 2-11 C above normal. Their extrapolated data significantly skews the global temperature reading upwards. Hansen claimed a record in 2010 by only 0.01 degrees, yet he is creating artificial data 1000X larger. No serious scientist would make such a claim.
Now, let’s look at what is really happening in the Arctic, using the NOAA map below. On any given day, some parts of the Arctic are above normal and some parts are below – as much as 10C below normal. Large gradients can exist across small distances.
In other words. the GISS 120o km extrapolation algorithm is severely skewed, and pushes their calculated temperature numbers upwards by a large amount.