Climate tipping points have been the subject of much debate and confusion. Now Professor Tim Lenton of the University of East Anglia has published a very good piece, “Tipping points in the Earth System,” giving some intellectual substance to the notion.
Not surprisingly, the tipping point Prof. Lenton worries about most is the disintegration of Greenland’s ice sheet. He told The Guardian:
We know that ice sheets in the last ice age collapsed faster than any current models can capture, so our models are known to be too sluggish.
His paper examines where Greenland’s tipping point is: