The six lowest seasonal minimum ice extents in the satellite record have all occurred in the last six years (2007 to 2012). (dotearth.blogs.nytimes.com)
Typically, it is around 80 %, with seasonal minima near 3 million square kilometers. (hubpages.com)
But «while the Arctic maximum is not as important as the seasonal minimum, the long - term decline is a clear indicator of climate change,» Walt Meier, a sea ice researcher at the NASA Goddard Space Flight Center, said in a statement. (scientificamerican.com)