Hier ein kurzer Tipp, welches Thema Euch bei den kommenden Wahlen primär interessieren sollte: Klima.
Ein richtig guter Vortrag (in english) von @rahmstorf zum aktuellen Stand der Erforschung des AMOC (Golfstrom/Transatlantische Strömung).
Spoiler: Sehr hohes Risiko eines nahen Kipppunktes, der die Durschschnittstemperatur in Europa um mal bummelig -20°C senkt... https://www.youtube.com/watch?v=HX7wAsdSE60
I somehow derailed this into a climate inaction/vessel analogy discussion, detracting from main point, so to come back to that:
There is more and more evidence that the slowdown/end of #AMOC could be a real prospect, quite soon, with very serious consequences for everyone in the northern hemisphere, the world. Not to be too doomsday-ish, but as @rahmstorf says: this is not good news. https://mastodon.green/@pvonhellermannn/112303970032266377
Answer: it looks more and more likely. There are still uncertainties, especially as to “When”; but with ever increasing evidence it is clear, as Rahmstorf says: we must, must apply the #precautionaryprinciple.
During sobering conclusion a pop-up message about Taylor Swift. What a time to be alive.
Is the Atlantic Overturning Circulation Approaching a #TippingPoint?
Studies show that the Atlantic Meridional Overturning Circulation (#AMOC) has already weakened as a result of anthropogenic #ClimateChange and is possible moving towards a tipping point. This current has a significant influence on #climate, particularly in #Europe.
Many scientists believe the culprit for the last great cold period in the transition out of the Ice Age was the collapse of the Atlantic Meridional Overturning Circulation (AMOC): a web of currents that includes the Gulf Stream. Recent studies suggest it may collapse again — sooner than we expect.
Paul Beckwith on: How North Atlantic Ocean Warming, Increasing Saltiness and Dropping Density All Risk AMOC Shutdown
" It’s like the climate system is a finely tuned Swiss watch, and we hit it with a sledge hammer. Everything changes and the system is highly nonlinear so strange things happen." https://www.youtube.com/watch?v=hu9v4PpzdNM#AMOC#Greenland#Europe#Atlantic
Another study shows that the AMOC (Atlantic Meridial Overturning Current), which encompasses the Gulf Stream, is slowing and has been since the 90s. The researchers stop short of predicting a collapse anytime soon, but it's not anything that calls the prospect of a collapse into doubt.
This is significant because the AMOC determines the weather on the east coast of the US and for most of western Europe.
Paul Beckwith - How does our Climate System Evolve as the AMOC Shuts Down?
"I revisit the key peer-reviewed scientific papers of Antarctica changes, and then expand this to additional research on the Southern Hemisphere Meridional Overturning Circulation, and then connect it to the northern hemispheric AMOC" https://www.youtube.com/watch?v=GJCnLSxH_Uc#SMOC#AMOC#Antarctic
Kipppunkt Ozeanströmung: Zu viele Untergangsszenarien?
Die nordatlantische Umwälzzirkulation könnte kippen, hieß es zuletzt häufig. Aber was genau bedeutet das? Was ist eigentlich ein Kipppunkt? Und ist es angemessen, dass so viel darüber gesprochen wird? Von Yasmin Appelhans.
"The odds of such a collapse are low — about 5% or 10% this century, according to some researchers — but the consequences are so great that it would be unwise to ignore the possibility, Swain said. " #amoc#climate
This is an oceanographic phenomenon worthy of our attention and alarm. Lots of talk about #TippingPoint events lately, with good reason. This is one of the most important to track, with profound global implications for #ClimateChange and #ExtinctionEvent triggering. If the #AMOC becomes more unstable, as it is doing every year, it WILL collapse - within a few generations. And that, my friends, will change the world in dramatic ways. We don’t want to go there, but are well on our way. #Oceans#Oceanography#AtlanticCurrents#ClimateCrisis#ClimateEmergency
This is an absolute gem. The periodic kerfuffle about the Gulf Stream turning off (actually the science is about AMOC, NOT the Gulf Stream, but no-one apart from oceanographers seems to know or care) isn't new. My colleague Tom Rossby found & translated this short story from 1910 about Americans diverting the Gulf Stream and causing disaster for Sweden. Well worth reading (click pic):
In the latest Headlines of a Warming World, we're writing about the Atlantic Meridional Overturning Circulation (AMOC), a vital circulatory system of ocean currents, which is on a tipping course and could collapse due to freshwater input from melting ice and increased precipitation.
Disruption of the AMOC could freeze Europe, scorch the tropics and increase sea level rise in the North Atlantic.
Atlantic Ocean is headed for a tipping point − once melting glaciers shut down the Gulf Stream, we would see extreme #ClimateChange within decades, study shows
"The results showed that it’s headed in that direction. If that happened, average temperatures would drop by several degrees in North America, parts of Asia and Europe, and people would see severe and cascading consequences around the world."
"She explained, "there's a net heat flow from the south to the north, all the way through that upper part of that circulation, and if we shut that down, the heat stays here with us".
This would accelerate all the impacts of climate change already being felt in the Southern Hemisphere."
"A full #AMOC collapse would be a massive, planetary-scale disaster. We really want to prevent this from happening.
We are talking about risk analysis and disaster prevention. This is not about being 100% or even just 50% sure that the AMOC will pass its #TippingPoint this century; the issue is that we’d like to be 100% sure that it won’t.
The studies discussed here, which came after the 2021 IPCC report, point to a much larger risk than previously thought."