Abrupt Arctic changes warn that we are slipping faster towards the precipice on the road where we cannot avoid the Hothouse Hell and extinction
Part 3 of David Spratt’s guidebook to events along the road to Hothouse Hell: Collapse of the Greenland Ice Sheet.
Continuing from David Spratt’s look in Part 2 of his guidebook at evidence that the West Australian Ice Sheet is beginning to collapse; here, in Part 3 he turns his attention north, to signs that Greenland’s Ice Sheet is also beginning to collapse. As before, we are looking at the impacts of a probable sequence of events along the global warming road to Earth’s Hothouse Hell. These are leading us to what Steffen et al. described as the Earth System’s Hothouse (see the featured graphic above) in their 2018 Proceedings of the National Academies of Science paper, Trajectories of the Earth System in the Anthropocene. The potentially cascading impacts of these events were also summarized in Lenton et al’s 2019 comment paper in Nature, Climate tipping points — too risky to bet against. An additional danger is that these may also cascade rapidly to cause a large change abruptly. The bottom line is that if we cannot stop the warming and backtrack to a lower temperature world, we cannot avoid the Hothouse and the road will end in the mass extinction of most species of complex life on our only planet, including ourselves.
There is no evidence that anything other than a rapidly mobilized war effort by humans will stop the cascade passing the point of no return to runaway warming and global mass extinction. If we want to leave any kind of future to our children and grandchildren, we had better pay heed to the warning signs that Spratt is pointing out, and start mobilizing and acting NOW!
24 January 2022
Have tipping points already been passed for critical climate systems? (3) Greenland and the Arctic: Abrupt change
by David Spratt in Climate Code Red
Third in a series.
Read 1 | 2 | 3 | 4 | 5 | 6 | 7
“The Arctic is screaming”, says Mark Serreze, Arctic climate expert at the US National Snow and Ice Data Center.
Arctic warming is racing ahead of the worst-case estimates, now heating four times faster than the global average, and the region is undergoing abrupt climate change, understood as a transition of the climate system into a different mode on a time scale that is faster than the responsible forcing. In other words, it has passed a tipping point for rapid, system-level change.
Researchers say that the Arctic “is currently experiencing an abrupt climate change event … climate models underestimate the abruptness of the recent changes observed in the Arctic (and) climate models underestimate this ongoing warming”. [Models do not account well for warming due to sea-ice loss, but losing the reflective power of Arctic sea ice in the summer months would advance the 2ºC threshold by 25 years”.]Read the complete article…..
If we do nothing to stop the inexorable warming process we started with the proliferating carbon burning used to fuel the Industrial Revolution and our continuing competition to control the world the Climate System will complete its flip into Earth’s Hothouse Hell state. It will be very unlikely that we can avoid the hothouse and extinction along with the rest of the biosphere that supports our lives.
From the time the Abbott Government was elected in 2013 the LNP COALition Governments (currently under Capt. Humbug, (a.k.a. Scotty from Marketing) and his henchman Blarny Bulldust (The Man with the Hat) have worked hard to protect and and advance the interests of their patrons with special interests in the fossil fuel and related resource exploitation industries. Thus, for nearly a decade, The COALition’s humbug, denial, parliamentary blocking, disinformation, distraction and stupidity has successfully disrupted virtually every attempt to act against greenhouse gas emissions or even to slow the continued expansion of these lethal industries. Every year the COALition has been in power we are that much closer to the point of no return where our extinction is the only plausible outcome.
So what can Australians do to begin improving our odds to avoid the Hothouse Hell? One very obvious action is to replace the COALition government with people we can trust to put action on the climate emergency at the top of their goals in office and who have the capacity to organize and lead Australia’s mobilization of a global effort to stop and reverse global warming.
Our Traffic Light Voting System explains how we can help you do this without telling you how to vote.