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