|My private corner of the internet has been interrupted by Steve-Goddard-spam. His 2011-2007 comparison of Sept 26 seems to be a real hit among some. This is tied into the tired ‘sea ice recovery’ meme. Of course, he isn’t comparing 2007 sea ice minima with 2011 minima. So I did it myself. Per IJIS, the 2011 minima was 20110909 and 2007 minima was 20070924. So I grabbed those two pics from the Cryosphere archive, color inverted one, and overlayed them. Click for the result.|
The significant difference between the 2007 and 2011 sea ice extents, is that the Russian Northern Sea Route and Canadian/US Northwest Passage are wide open and ice free in 2011.
2007 09 24: 4254531 km^2
2011 09 09: 4527813 km^2