Cascading Interactions Between Tipping Elements in the Anthropocene Earth System - Jonathan Donges

[@mikeharrington5593]

At around 15:40 the graph indicates how the scale of anomalous temperatures may trigger various tipping elements. However the scale depicts global mean temperature (?) but we know that some regions are heating much faster than others. Because of this, does it mean that the trigger points for those (faster warming) regions are likely to be reached (much) sooner? In this context the pace of ocean warming being different to atmospheric warming also seems to confer acceleration of ice sheet melts?

[@xchopp]

I'm not sure why there is a question mark after "Permafrost and Tundra Loss" at 9:11. At this point, that is a given: is there any process imaginable that might counteract polar amplification?

[@myra7273]

Significantly altering the AMOC will likely have major effects on weather patterns, which can impact agricultural production, storm patterns, & other things.

[@xenocampanoli815]

I think the AMOC is a minor matter compared to yhe scale of heating and the hazards of food stock loss from just a few degrees change. We could literally lose half the population of the planet from lack of food as early as next year.

[@xchopp]

​@@xenocampanoli815 We know that a few degrees change (in average surface temperature) would likely result in important reductions in crop yields -- but why "next year"? What in your opinion could happen between now (late 2021) and 2023 that would cause an immediate collapse in agriculture, globally? This needs further explanation - otherwise, it is hard to take your comment seriously.

[@ronedwards6478]

Check out Guy McPherson. It’s already too late.

[@Jc-ms5vv]

Everyone is in denial about our demise

[@larrytaylor693]

Guy McPherson has a list of tipping points that we have already tipped like 60+ It only takes 1 If majority of other scientists think we still have time to reverse the warming My concern is Why

[@mrgreen1198]

@@volkerengels5298 indeed. Quietly getting a seat for the show is perhaps a good idea. No need to shout this from the rooftops is there? :)

[@LuisAldamiz]

Too late for what? For Venus or for Jurassic 2.0? If we can react before reaching the Venus stage, maybe we can survive as species and even eventually improve.

[@TheHighSpaceWizard]

@@LuisAldamiz some life on earth might survive, but not humanity.

[@Bookhermit]

I WISH climate would step up and become a serious global problem. Sadly, it still appears that global warfare maintains the lead....

[@xenocampanoli815]

Risk is about discussions where things may move one way or the other. What we have with climate change is a sure deal. The only probability to talk about is whether we are facing simply socioeconomic disaster in the next 30 years, or if the species may indeed go extinct in that time.

[@AudioPervert1]

Also he like many scientists totally ignores the biophysical limits of the ecosystem. How sad and prosaic.

[@rudigereichler4112]

Why did not the earth tip into a hot house when CO2 was over 2000 ppm and why was that followed by ice ages ? Answer: There are no CO2 induced tipping points because the climate is dominated by negative feedback mechanisms just like virtually every physical system, especially very old ones.

[@xchopp]

It would be helpful if you could enumerate and describe those negative feedback mechanisms: publishing scientists seem to have been unable to find them, even after decades of research. If you can publish your findings in a reputable journal that would be even better: your case would be considerably strengthened; and you would probably be given a Nobel prize. Go for it!

[@TheHighSpaceWizard]

Followed how long after by ice ages?