We need to be alert to a metastasis of consequences to humankind and all else, as Arctic ice melt proceeds.
Cross-post of comment I put on Joe Romm's blog.
The multi-year loss of old ice through the Fram Strait should get LOTS more attention.
Research papers in the past twenty years on thermohaline circulation
show the importance of a seasonal flow of freshwater from melting ice in
maintaining global ocean currents.
The gradual exhaustion of multi-year ice has delayed a metastasis of
consequences, of which disrupted ocean currents would be one of those to
have a big effect on humans.
It is boggling to imagine what disrupted currents could do, in
conjunction with the effects on Jet Stream and mid-latitude weather as
already described by Dr. Jennifer Francis.
Please also check my earlier post at Planting Ahead about thermohaline circulation.