Glaciers continue to speed up
We now know that not only are the edges melting fast, but the surface melt is seeping through the ice to lubricate the junction between the glacier and the rock underneath. This is the unexpected factor that has turned scientific attention onto this escalating problem.
It appears that the Greenland ice is shot through with crevices, tunnels and faults through which the melting upper surface can penetrate right through the glacier, and threaten to break the attachment between the ice and the rock base.
When this happens much of this mountain of water will flow into the sea. Already twenty-one of the great glacial masses are moving seawards eight times faster than ten years ago and disintegrating three times faster than in the preceding five years.
It would seem we are on the verge of a major tipping point in climate change, if we have not already reached it. The latest US Navy survey suggests there will be no sea ice left in the Arctic summer by 2016. This has been unprecedented within the entire record of human species.