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There is increasing concern that the Atlantic Meridional Overturning Circulation (AMOC) may collapse this century with a disrupting societal impact on large parts of the world. Preliminary estimates of the probability of such an AMOC collapse have so far been based on conceptual models and statistical analyses of proxy data. Here, we provide observationally based estimates of such probabilities from reanalysis data. We first identify optimal observation regions of an AMOC collapse from a recent global climate model simulation. Salinity data near the southern boundary of the Atlantic turn out to be optimal to provide estimates of the time of the AMOC collapse in this model. Based on the reanalysis products, we next determine probability density functions of the AMOC collapse time. The collapse time is estimated between 2037-2064 (10-90% CI) with a mean of 2050 and the probability of an AMOC collapse before the year 2050 is estimated to be 59±17%.
The Amazon rainforest is facing a barrage of pressures that might tip it into large-scale ecosystem collapse as soon as 2050, according to new research Wednesday warning of dire consequences for the region and the world. The Amazon, which holds more than 10 percent of the world's biodiversity, helps stabilize the global climate by storing the equivalent of around two decades of emissions of planet-warming carbon dioxide.
A crucial system of ocean currents may already be on course to collapse, according to a new report, with alarming implications for sea level rise and global weather — leading temperatures to plunge dramatically in some regions and rise in others. Using exceptionally complex and expensive computing systems, scientists found a new way to detect an early warning signal for the collapse of these currents, according to the study published Friday in the journal Science Advances. And as the planet warms, there are already indications it is heading in this direction.
The new version of the “Seneca Effect” blog on Substack is doing reasonably well, so I thought it was time to prepare a page that explains what the Seneca Effect is and what it can teach us. (image by Dall-E) During the 1st Century AD, the Roman philosopher Lucius Annaeus Seneca observed the start of the disintegration of the Roman Empire. It was a process that would take a few more centuries to complete, but that was already evident to those who were willing to look beyond the surface of the still powerful Empire.
Societies and political structures, like the humans they serve, appear to become more fragile as they age, according to an analysis of hundreds of pre-modern societies.
World Meteorological Organization says 2023 will be hottest year on record, leaving ‘trail of devastation and despair’
Scientists warn of unlivable heat and food shortages after analyzing 35 planetary vital signs.
Life on planet Earth is under siege. We are now in an uncharted territory. For several decades, scientists have consistently warned of a future marked by extreme climatic conditions because of escalating global temperatures caused by ongoing human activities that release harmful greenhouse gasses into the atmosphere. Unfortunately, time is up. We are seeing the manifestation of those predictions as an alarming and unprecedented succession of climate records are broken, causing profoundly distressing scenes of suffering to unfold. We are entering an unfamiliar domain regarding our climate crisis, a situation no one has ever witnessed firsthand in the history of humanity.
Catastrophic climate change and the collapse of human societies By Josep Peñuelas, Sandra Nogué National Science Review, Volume 10, Issue 6, June 2023 The scientific community has focused the agend…
If you've ever seen the movie Soylent Green, you know it's not about cannibalism. It's about the banality of social collapse. It's not quick. It's a slow burn. Nobody shows any sense of urgency about anything. Everyone still watches talk shows, even if they have to pedal a bike to generate electricity for their television. Nobody under 50 remembers anything better. Here's the plot twist: It's not that corporations are using people as the main ingredient in everyone's favorite new food. It's
The Atlantic meridional overturning circulation (AMOC) is a major tipping element in the climate system and a future collapse would have severe impacts on the climate in the North Atlantic region. In recent years weakening in circulation has been reported, but assessments by the Intergovernmental Panel on Climate Change (IPCC), based on the Climate Model Intercomparison Project (CMIP) model simulations suggest that a full collapse is unlikely within the 21st century. Tipping to an undesired state in the climate is, however, a growing concern with increasing greenhouse gas concentrations. Predictions based on observations rely on detecting early-warning signals, primarily an increase in variance (loss of resilience) and increased autocorrelation (critical slowing down), which have recently been reported for the AMOC. Here we provide statistical significance and data-driven estimators for the time of tipping. We estimate a collapse of the AMOC to occur around mid-century under the current scenario of future emi
A collapse would bring catastrophic climate impacts but scientists disagree over the new analysis
Climate breakdown and crop losses threaten our survival, but the ultra-rich find ever more creative ways to maintain the status quo, says Guardian columnist George Monbiot
Just Collapse is an activist platform dedicated to socio-ecological justice in face of inevitable and irreversible global collapse. Just Collapse advocates for a Just Collapse and a Planned Collapse to avert the worst outcomes that will follow an otherwise unplanned, reactive collapse. Just Collapse recognises that there will be no justice in an unplanned collapse.
Around the world, rainforests are becoming savanna or farmland, savanna is drying out and turning into desert, and icy tundra is thawing. Indeed, scientific studies have now recorded "regime shifts" like these in more than 20 different types of ecosystem where tipping points have been passed. Around the world, more than 20% of ecosystems are in danger of shifting or collapsing into something different.
We ran computer programs that simulate ecosystems 70,000 times and the results are very worrying.
A major concern for the world’s ecosystems is the possibility of collapse, where landscapes and the societies they support change abruptly. Accelerating stress levels, increasing frequencies of extreme events and strengthening intersystem connections suggest that conventional modelling approaches based on incremental changes in a single stress may provide poor estimates of the impact of climate and human activities on ecosystems. We conduct xperiments on four models that simulate abrupt changes in the Chilika lagoon fshery, the Easter Island community, forest dieback and lake water quality—representing ecosystems with a range of anthropogenic interactions. Collapses occur sooner under increasing levels of primary stress but additional stresses and/or the inclusion of noise in all four models bring the collapses substantially closer to today by ~38–81%. We discuss the implications for further research and the need for humanity to be vigilant for signs that ecosystems are degrading even more rapidly than previo
Une présentation que j'ai récemment réalisée en conférence auprès d'une entreprise, et que je reproduis ici, sur les grands enseignements du rapport du Group...
Professor Joseph Tainter is an American anthropologist and historian studied anthropology at the University of California, Santa Barbara, and Northwestern University, where he received his Ph.D. in 1975. As of 2012 he holds a professorship in the Department of Environment and Society at Utah State University. In this interview Professor Tainter discusses the thesis of his widely acclaimed work “The Collapse of Complex Societies”, 25 years after its publication in 1988. His book is among great classics of the study of collapse. In my view a work whose quality and relevance is comparable to Limits to Growth.
The collapse of modern societies has already begun. That is the conclusion of two years of research by the interdisciplinary team behind Breaking Together. How did it come to this? Because monetary systems caused us to harm each other and nature to such an extent it broke the foundations of our societies. So what can we do? This book describes people allowing the full pain of our predicament to liberate them into living more courageously and creatively.
Thème de ce premier épisode, la démographie ! J'ai collecté et commenté une quinzaine de graphiques qui me semblaient pertinents (sans prétention évidemment à être exhaustifs, ou même concluants) : ...
The scientific community has focused the agenda of studies of climate change on lower-end warming and simple risk analyses, because more realistic complex asses
By replacing thousands of equations with just one, ecology modelers can more accurately assess how close fragile environments are to a disastrous “tipping point.”
The steady destruction of wildlife can suddenly tip over into total ecosystem collapse, scientists studying the greatest mass extinction in Earth’s history have found. Many scientists think the huge current losses of biodiversity are the start of a new mass extinction. But the new research shows total ecosystem collapse is “inevitable”, if the losses are not reversed, the scientists said.
"Make Polluters Pay!" roepen wetenschappers en klimaatactivisten die nu de ingang blokkeren van de Aviapartner Executive Lounge en de Luxaviation terminal, exclusieve faciliteiten voor de superrijken die met privéjets van en naar Brussel vliegen.
Deze geweldloze actie maakt deel uit van een wereldwijde campagne waarin wordt geëist dat degenen die het meest verantwoordelijk zijn voor de klimaatnoodsituatie, stoppen met hun destructieve levensstijl.
Elizabeth Kolbert writes about this week’s summit on biodiversity, where delegates will consider ambitious new conservation targets—even though the old ones have yet to be achieved.
It’s not just indifference. It’s an active, and deadly, cavalier attitude towards the lives of others: an example other nations follow
Un rapport confidentiel de la Deutsche Bank révèle comment les ultra-riches se préparent au collapse
(09/10) - Jacques TiberiUne note privée de la Deutsche Bank alerte ses gros clients ultra-riches des dangers d'effondrement du système industriel et financier.
Assisterons-nous au collapse de la civilisation techno-industrielle avant que des supraintelligences artificielles ne gouvernent le monde ?
Mainstream energy analysts then and now assume that technology will continue to overcome resource limits in the immediate future, which is all that really seems to matter. Much of what is left of the peak oil discussion focuses on “peak demand”—i.e., the question of when electric cars will become so plentiful that we’ll no longer need so much gasoline. Nevertheless, those who’ve engaged with the oil depletion literature have tended to come away with a few useful insights....
In Madrid, the organisation showed a great sense of purpose. But beware a divided Europe and a US still tired of paying for the continent’s security
Strong climate action could wipe $756bn from individuals’ pension funds and other investments in rich countries
For the past few years, scientists have been frantically sounding an alarm that governments refuse to hear: the global food system is beginning to look like the global financial system in the run-up to 2008.
Previous studies show that city metrics having to do with growth, productivity and overall energy consumption scale superlinearly, attributing this to the social nature of cities. Superlinear scaling results in crises called ‘singularities’, where population and energy demand tend to infinity in a finite amount of time, which must be avoided by ever more frequent ‘resets’ or innovations that postpone the system's collapse. Here, we place the emergence of cities and planetary civilizations in the context of major evolutionary transitions. With this perspective, we hypothesize that once a planetary civilization transitions into a state that can be described as one virtually connected global city, it will face an ‘asymptotic burnout’, an ultimate crisis where the singularity-interval time scale becomes smaller than the time scale of innovation. If a civilization develops the capability to understand its own trajectory, it will have a window of time to affect a fundamental change to prioritize long-term homeosta
The world may be facing a devastating “hidden” collapse in insect species due to the twin threats of climate change and habitat loss.
The rapid collapses of two ice shelves on the Antarctic Peninsula over the past quarter-century were most likely triggered by the arrival of huge plumes of warm, moisture-laden air that created extreme conditions and destabilized the ice, researchers said Thursday.
The Gulf Stream has weakened substantially in the past decades, as revealed by the latest data and new studies. Weather in the United States and Europe depends strongly on this ocean current, so it’s important we understand the ongoing changes and what they mean for our weather now and in the near future.
Welcome to the Great Inflation — Or, Why We Have to Pay for the Hidden Costs of the Industrial Age
New research suggests 75% of the rainforest has become less resilient to stress since the early 2000s.
Infinite growth on a finite planet has pushed us into crisis, and this forum tackles the difficult questions and taboo topics: Bursting the fantasy of sustainability based on clean energy transition and arguing for equitable approaches to global population. Pathways forward include a deliberate contraction of the human enterprise and a planned collapse.