The uniqueness of seasonal or absent Arctic sea ice

[ccgwebmaster]

http://www.livescience.com/42870-arctic-ocean-summer-ice-earlier.html

If the sea ice has been perennial for over 30 million years - perhaps that should serve to highlight how fundamental (and far reaching) the changes we should expect to see as it becomes seasonal again in the near future could be.

[ritter]

Yes, one does not just create a new ocean in a closed system without some ripples elsewhere. It's amazing that so few comprehend that.

[Shared Humanity]

Since perennial Arctic Sea Ice predates the Antarctic ice sheet by a couple of million years, is the disappearance of this Arctic Sea ice an omen for the  ultimate demise of  the  Antarctic ice sheets? While it might takes tens of thousands of years, is the ice sheet doomed?

[werther]

SH, evening....

Rhetorical question.... is the Antarctic icesheet doomed. Of course it is. I posted two days ago on the Holmgren-Hopkins thread about my reading in on the Eocene period. The culprit is that CO2-rubberband/buffering natural changes of say 2000 ppm CO2 took like 600K years. Imagine a graph on that, you'd see maximum content growth of about 1-5 ppm in a couple of hundred years.
We're doin' that on average in two years!
Even when 'The day after tomorrow'-movie held little reality, this planet is in for a spectacle.