Is this a misleading way to present Arctic temperature anomaly data?
I understand the point you’re making but your interpretation of the graphic is wrong. The graphical representation uses an equal area grid system, each grid on the image represents an equal area of Earth’s surface. There are far fewer grid squares used to represent the Arctic (or Antarctic) region than in areas closer to the Equator. The grid is similar to the one shown here http://isccp.giss.nasa.gov/GIFS/fig3_1_s… and you can see that the grid is overlaid onto a sinusoidal projection rather than a Mercator one, with the gridding corresponding to the sinusoidal lobes. Although it’s not immediately apparent, look closely at the graphic you linked to you and you’ll can see that the coloured boxes representing the Equatorial zone are smaller than those of the polar regions.
