A rapidly retreating
Arctic perennial ice
The perennial sea ice
cover has been retreating
at the rate of -9 %/decade
There is a 90% level of
confidence that the trend
is between -5% and -12%.
The summer ice surface
temperature has also
been on the rise at 1.2
Ref: Comiso, J., A rapidly declining
sea ice cover, Geophys. Res. Let.,
29(20), 1956, 2002.