The Earth is on a “disastrous trajectory” with “no adequate global governance” to deal with the scale of threats posed by climate tipping points, warns a major new report.
These tipping points “pose some of the gravest threats faced by humanity”, according to the authors.
They identify more than 25 tipping points across the Earth system, ranging from ice-sheet collapse to rainforest dieback.
“Five major tipping points are already at risk of being crossed due to warming right now and three more are threatened in the 2030s as the world exceeds 1.5C global warming,” the report finds.
Crossing Earth system tipping points would have “catastrophic” impacts on societies, with the potential to “escalate violent conflicts, mass displacement and financial instability”, the report also warns.
The authors say that promoting “positive social tipping points” in socio-behavioural, technological, economic and political systems is “the only realistic systemic risk governance option” to limit the risks.
Many positive tipping points have already been crossed – such as renewable energy becoming the cheapest form of electricity in some countries, and electric vehicles gaining the largest share of the market in others – the report finds.
An international team of more than 200 researchers have contributed to this report, which was initiated at a conference on tipping points in September 2022. (See Carbon Brief’s coverage of the event.) The report was funded by the Bezos Earth Fund.
The authors of the report support a proposal – currently under consideration – for the Intergovernmental Panel on Climate Change (IPCC) to prepare a special report on the topic of tipping points.
They also call for the risks and opportunities around tipping points to be included in the global stocktake of progress towards the goals of the Paris Agreement, as well as future revisions of Nationally Determined Contributions and national and sub-national policy measures.
In this Q&A, Carbon Brief unpacks the report’s findings on “negative” Earth system tipping points and “positive” social tipping points.
- What are tipping points?
- What are the main Earth system tipping points?
- When could key thresholds be crossed?
- What are the impacts of crossing tipping points?
- Can ‘positive tipping points’ mitigate the risks?
What are tipping points?
Scientists have warned for decades that many Earth systems are at risk of crossing “tipping points” – critical thresholds that, if exceeded, could push a system into an entirely new state.
Prof Tim Lenton is the chair of climate change and Earth system science at the University of Exeter and lead author of the new report on “global tipping points”. He describes a tipping point as a system in which “a small change makes a big difference and changes the state or the fate of a system”.
The report uses the analogy of a ball in a valley to describe tipping points, as shown in the graphic below.
In the left-most panel (blue), the ball sits in the left-side valley. If the ball is given a small push, it rolls briefly up the side of the valley before returning to its starting position. This “resilience” – the system’s ability to withstand changes – shows that the system is stable, the report says.
However, the report warns that human activity – including climate change, ecosystem degradation and pollution – are making many Earth systems less stable. This is shown by the left-hand valley getting shallower in the middle panel (purple) and the lowering of the hill between it and the right-hand valley. Now it would be easier for the ball to move into the right-hand valley when pushed.
As a system comes close to a tipping point, it may be slower to return to its original state after a “perturbation” or disturbance, the report says. This would be shown by the ball returning more slowly to its original position after it is pushed.
Dr David McKay – an independent research consultant and visiting fellow at the University of Exeter’s Global Systems Institute – is a section lead on the new report. He describes this behaviour as a “wobble” and tells a press briefing that it can often be picked up using observational data. This is important, because it can provide an early warning signal that a tipping point is approaching.
A “tipping point” is crossed when the ball rolls past the point of no return into the right-side valley, leaving its original state and settling into a new stable state. This is shown in the right-hand panel (red). It is now very difficult for the ball to return to its original state in the left-hand valley.
The report says that a tipping point occurs “when change in part of a system becomes self-perpetuating beyond a threshold, leading to substantial, widespread, frequently abrupt and often irreversible impact”.
Under this definition, it is also possible for tipping points to be reversible and “non-abrupt” – although this is not usually the case, the authors note.
What are the main Earth system tipping points?
In recent years, there has been plenty of academic discussion about which elements of the Earth system might exhibit tipping points.
The report synthesises hundreds of peer-reviewed articles to identify more than 25 parts of the Earth system that have tipping points across the cryosphere, biosphere, atmosphere and oceans. (Carbon Brief has previously unpacked nine of them in detail.)
Importantly, the authors also show which systems they do not believe to exhibit tipping behaviour.
Cryosphere
The report identifies multiple tipping points in the cryosphere, as shown on the map below.
The colours and markers indicate how confident the authors are that each system has a tipping point. A red bar and “+++” marker indicates that the authors are very confident that the system is a tipping point. A blue bar and “- – -” marker indicates that the authors are very confident that the system is not a tipping point. The four arrows and globe symbols indicate regional and global systems, respectively.
There are “multiple lines of evidence” to support the existence of “large-scale” tipping points from the melting of the Greenland and Antarctic ice sheets, the report says, explaining that if ice loss exceeds a threshold amount, self-amplifying feedbacks could cause the ice to disintegrate even faster, leading to large-scale ice-sheet “collapse”.
Conversely, the authors have “high confidence” that Arctic summer sea ice loss is not a tipping system, finding that in models and observations, summer sea ice loss tends to increase “gradually, but surely” in line with warming.
Meanwhile, the authors find evidence for “localised and regional” tipping points in glaciers and permafrost, but find that these systems do not exhibit “large-scale tipping dynamics”.
Oceans and atmosphere
There are four further tipping points in the oceans and atmosphere, including monsoons over west Africa, India and South America, clouds and El Niño southern oscillation (ENSO), according to the report. These are shown in the map below.
The Atlantic Meridional Overturning Circulation (AMOC) is a major system of ocean currents that plays an important role in regulating the global climate. The report explains that rising temperatures, combined with an influx of cold, fresh water from the melting of the Greenland ice sheet, could destabilise these ocean currents, potentially causing the entire system to “shut down”.
Similarly, the authors find evidence for tipping points in the overturning circulations in the Atlantic and the Southern oceans, as well as for the west African monsoon.
The authors also assess the literature on cloud-induced tipping points. Various different mechanisms linked to incoming solar radiation and outgoing infrared radiation have been suggested, but the authors conclude that “concern about cloud-driven tipping points is relatively low”.
Biosphere
The report finds the most tipping points in the biosphere, as shown in the map below. Different colours of shading indicate different biomes – for example, coral reefs in red and mangroves in pink.
Systems in the biosphere have more “co-drivers” that can reduce their resilience – such as climate change, habitat loss and pollution – making tipping points easier to reach, the report finds.
For example, it notes that the Amazon provides much of its own rainfall by cycling water between the atmosphere and vegetation. Deforestation and climate change can disrupt this mechanism, pushing the system over a tipping point where it turns from forest into savannah. This process is called forest “dieback”.
Among tropical forests, there is most evidence of a tipping point for the Amazon, the report finds. Other tropical forests such as the Congo have evidence for local tipping points, but are less likely to cross them, the report finds.
The authors also find that mangroves and sea grasses – which are “historically among the most human-threatened ecosystems in the world” – are at risk tipping regionally. They highlight regional examples of “mangrove die-off”, which typically occur when the mangroves are “physiologically stressed”.
The report also looks at marine food webs and fisheries, finding that “marine community shifts take place when abrupt changes cascade through several species or functional groups of an ecosystem”.
When could key thresholds be crossed?
Assessing when key climate tipping points may be crossed has been a key area of research for many years. One way to identify imminent tipping points is by looking for the “wobble” or “loss of resistance” in a system.
For example, the report cites research that finds three-quarters of the Amazon rainforest has lost “resilience” since 2003, making it slower to recover from droughts and heatwaves. This indicates that the forest could be approaching a tipping point, the authors say.
Parts of the Greenland ice sheet and AMOC are also exhibiting a loss of resilience, the report finds. It adds that given present-day warming of 1.2C, tipping of warm-water coral reefs is likely:
“Coral reefs are already experiencing tipping points, as more frequent warming-driven bleaching events, along with pollution, extreme weather events and diseases, tip them to degraded algae-dominated states.”
As the planet continues to warm, the likelihood of crossing key thresholds increases. The report also draws on research recently published by McKay, which assesses how many tipping points could be triggered at different levels of global warming.
The upper half of the plot below shows the likelihood of triggering 15 tipping elements at different temperature levels. Yellow indicates a low likelihood and red indicates a high likelihood, while the dotted line indicates a central estimate.
The grey line underneath shows observed warming to the present day and projections out to 2100 from 1.5C (green) to more than 4C (red). The grey shading in the upper chart indicates expected warming given current climate policies.
The report says that five different tipping points are already “at risk of being crossed due to warming right now”. These are Greenland and West Antarctic ice sheet collapse, warm-water coral reef die-off, widespread localised abrupt thaw in permafrost and overturning circulation collapse in the North Atlantic subpolar gyre.
The North Atlantic subpolar gyre is a counter-clockwise ocean current to the south of Greenland, which drives the oceanic currents and redistributes heat and freshwater in the high latitude North Atlantic. The gyre is a component of AMOC, and is considered as a major tipping element of the climate system.
The report adds that three more tipping points are at risk of being crossed in the 2030s as the world exceeds 1.5C above pre-industrial temperatures.
However, the report warns that key thresholds could be crossed “at lower levels of global warming than previously thought”, adding:
“Our best models likely underestimate tipping point risks. The world is largely flying blind into this vast threat.”
This underestimation is largely due to “patchy and fragmented” knowledge, the authors say. For example, they note that “typical modelling approaches struggle to accurately represent ice sheet dynamics”.
The authors of the report support a proposal for the IPCC to prepare a special report on the topic of tipping points. The proposal was put forward by Switzerland in May 2022 and is currently under consideration.
What are the impacts of crossing tipping points?
The impacts of crossing Earth system tipping points “could be catastrophic”, the report warns.
Melting of the Greenland and Antarctic ice sheets would endanger coastal communities, and could lead to the complete loss of many small island nations, the report finds. Antarctic ice sheet instability alone could lead to a potential sea level rise of two metres by 2100, exposing 480 million people to annual coastal flooding events, it says.
Amazon dieback would be a “catastrophe for biodiversity”, the report finds. Reduced river flow would lead to transport difficulties in the region, and some six million people would face “extreme heat stress risk”. Overall, the report estimates that a complete Amazon dieback would cause damages of between $1tn and $3.5tn.
Thawing permafrost causes the ground to become unstable or “slump”, and the report warns that 70% of current infrastructure in permafrost regions is in areas with “high potential for thaw by 2050”.
It adds that crossing a tipping point in the AMOC would lead to global changes in rainfall patterns, with implications for water security and crop production around the world. The warm water that the AMOC carries northwards releases heat into the atmosphere, which means it plays a crucial role in keeping Western Europe warm.
However, the Earth system tipping points do not act in isolation. The authors find that crossing some tipping points, such as the dieback of rainforests or thawing of permafrost, releases more CO2 into the atmosphere, causing further warming.
Furthermore, many Earth systems are interlinked, meaning that crossing one tipping point can increase the likelihood of crossing others. The authors describe this as a “domino effect” or “tipping cascade”.
The map below shows these interactions. Red arrows indicate that crossing one tipping point causes another system to become more unstable, making it more likely to tip. Blue arrows indicate the opposite. Grey arrows indicate unclear effects.
Systems that may not tip on their own – but are still important due to their interactions with other systems – are shown with a blue outer circle. Tipping systems that exert a notable feedback on global average temperature when they tip are denoted by a red inner ring.
The report finds that the majority of interactions between climate tipping systems are destabilising – indicating that crossing one tipping point will generally lead to further tipping points being crossed.
For example, disintegration of the Greenland ice sheet would result in large volumes of cool freshwater flowing into the ocean, which could push the AMOC beyond a tipping point. This, in turn, could lead to an intensification of ENSO, which could go on to influence weather patterns over the Amazon, causing rainforest dieback, the report explains.
Crossing key tipping points “could have catastrophic impacts on human societies”, including an increase in violence and conflict, large-scale displacement and financial destabilisation, the authors warn.
The report says that Earth system destabilisation could lead to “social cohesion breaking down”, driving an increase in “mental disorders”, as well as “greater radicalisation of various groups and polarisation, making it harder to find collective solutions”. The report adds:
“These impacts could escalate to threaten the breakdown of economic, social and political systems, triggering destructive tipping points in societies experiencing stresses beyond their ability to cope.”
The authors add that each time a tipping point is crossed, humanity will be forced to divert more attention and resources into disaster response, “eroding away some of our agency
to tackle the underlying drivers”. This in turn would make it more likely for more tipping points to be crossed in the future, creating a “vicious cycle”, they say.
Can ‘positive tipping points’ mitigate the risks?
“The existence of tipping points means that ‘business as usual’ is now over,” the report warns. It adds:
“Rapid changes to nature and society are occurring, and more are coming. If we don’t revise our governance approach, these changes could overwhelm societies as the natural world rapidly comes apart.”
However, the authors add that “currently, there is no adequate global governance at the scale of the threats posed by negative tipping points”.
The authors argue that “positive social tipping points” – feedbacks in socio-behavioural, technological, economic and political systems that trigger a positive change – could be “the only realistic systemic risk governance option” to limit the risks.
Lenton told the press briefing that humanity has “left it basically too late for incremental action on the climate crisis”, adding that positive tipping points are key to limiting dangerous levels of warming.
Many positive social tipping points are being reached or have already been crossed, the authors say.
For example, they say that renewable energy has reached a tipping point of cost parity with fossil-fuelled power generation. They add that electric vehicles “show evidence of passing or approaching tipping points in major markets including China and Europe”.
Dr Tom Powell – a research impact fellow at Exeter’s Global Systems Institute and section lead on the report – told the press briefing that “the more of something we build, the cheaper it gets to build”.
He called this a “powerful reinforcing feedback”, adding that it is responsible for some of those cost reductions and renewable energies and electric vehicles.
In a similar way to negative Earth system tipping points, one positive social tipping point can trigger another, leading to a domino or cascade that generates “widespread societal change”, the authors say. Lenton outlined a positive tipping cascade in electric vehicle manufacture:
“As electric vehicles pass the positive tipping point of market dominance, this produces lots of cheap batteries, and those low cost batteries are crucial to provide essential storage capacity to reinforce a different positive tipping point towards renewable energy for our power supply.
“And that can in turn trigger positive tipping points in producing green ammonia and green hydrogen fuels for fertiliser, shipping and so on.”
Powell adds that “social contagion is a really powerful force”, noting that “the more people around you who are adopting sustainable choices, the more likely you are to do so yourself”. He adds:
“The more visible sustainable choices are among the general population, the easier it becomes for politicians to make policy choices that might have seemed very difficult a few years ago.”
However, positive social tipping points “don’t just happen by magic”, Lenton told the press briefing. Instead, he said they need “coordinated action”.
The report’s authors call for Earth system tipping point risks, corresponding action and positive tipping point opportunities to be included in the global stocktake under the Paris Agreement, as well as future revisions of Nationally Determined Contributions (NDCs) and national and sub-national policy measures.
The most recent iteration of the global stocktake text mentions climate tipping points twice. In one, it invites the scientific community to:
“Generate information relevant for NDCs and aligning them with 1.5C, cross-cutting considerations such as tipping points, guidance on risks and impacts, vulnerability, cryosphere and closing observation gaps.”
Dr Manjana Milkoreit – a postdoctoral fellow at the University of Oslo and section lead on the report – adds that decisions and actions taken in the coming decades will commit us to “really long-term changes”, adding that the issue of tipping points is important for our notions of intergenerational justice.
The post Q&A: Climate tipping points have put Earth on ‘disastrous trajectory’, says new report appeared first on Carbon Brief.
Q&A: Climate tipping points have put Earth on ‘disastrous trajectory’, says new report
After witnessing the effects of sea-level rise in the low-lying island nation of Tuvalu, Pacific leaders on Tuesday used the pre-COP31 summit in Fiji to voice their frustration at the difficulties they have experienced in tapping the global climate finance system.
A small group of government leaders, climate negotiators and heads of development banks and climate funds took a trip to Tuvalu’s Funafuti atoll on Tuesday morning, travelling by road over land just 10-20 metres wide to visit a project that is building barriers to keep the sea from the land.
They then flew to Fiji for the pre-COP summit, where several Pacific leaders said they had been let down by the insufficient quantity, bad terms and slow speed of international finance to help them adapt to a warming climate that is bringing higher oceans, drought and more powerful storms to their shores.
“Right now, our islands are like a canoe that has been rammed by a massive foreign ship. Our canoe is taking on water, we are sinking, and what is the world’s response?” asked Palau’s President Surangel Whipps Jr.
“They hand us a tiny patch to cover a gaping hole,” he continued, “but the bureaucratic process just to receive that patch is so slow that the water fills the hole while we wait. Then to rebuild the vessel so that we can survive the next storm, we are offered loans, debt that adds weight to a sinking boat packaged in red tape so thick we can barely access it. And while we wait, the water continues to fill.”
Pacific leaders and Australia called again on governments to invest in the new Pacific Resilience Facility (PRF), which has been designed by the Pacific Islands Forum and is seeking $500 million in investments by COP31 in November.
It has around $180 million so far, but did not receive additional pledges during the UN General Assembly in New York. The PRF aims to invest to generate annual returns which it can give to projects like water tanks for drought-hit communities.
Witnessing sea level rise
The annual pre-COP gathering is usually a low-profile technical meeting of climate negotiators. But this year, Australia – which is the president of negotiations at COP31 – partnered with the Pacific to introduce a “leaders segment” in an attempt to shine a spotlight on climate issues affecting the region.
Fourteen government leaders – from Australia, Timor-Leste, Mauritius and the Pacific – made the trip. They were joined by the European Union’s climate commissioner Wopke Hoekstra, the heads of the Green Climate Fund and the Asian Development Bank and former Australian prime minister Julia Gillard.
On their return to Fiji, Solomon Islands Prime Minister Matthew Wale told the pre-COP leaders roundtable that the sea level rise they had witnessed was personal for him.
“Tuvalu was not just a site visit for me. I saw the story of my own saltwater people,” he said, adding that he, his daughter and his grandfather had lost their houses to sea level rise and that three-quarters of his electorate live on land that will be underwater in the next 30 years.
From the other side of the world, Antigua and Barbuda’s environment minister Michael Joseph said Tuvalu’s problems felt similar to those of his own Caribbean islands. “I saw vulnerable communities… just metres from the sea and people determined to remain on their land, preserve their culture and way of life,” he said.
A group of Fijian schoolchildren told the leaders it was not just sea level rise the Pacific struggles with but also heatwaves, droughts and storms, which worry their families and prevent them from learning.
Climate finance red-tape
Several Pacific leaders criticised the world’s leaders for not doing enough to combat climate change. Cook Islands Prime Minister Mark Brown expressed disappointment that only two non-Pacific leaders had come to the pre-COP, a fact Australian media widely picked up on to label the event a flop and question its A$20 million (US$14m) price tag.
“We’ve heard a lot of numbers these last two days,” Brown said. “Let me share one of my own. More than 50 invitations extended to world leaders… to see for themselves what high emissions are doing to our nations and our ocean – an ocean that covers nearly one-third of the Earth’s surface.”
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He called for more climate finance for the Pacific, asking “if the world is prepared to assess our suitability for climate finance, why is it not equally prepared to scrutinise whether those responsible for delivering it are meeting their obligations?”
Like Palau’s president Whipps, Naoero’s President David Adeang criticised the red tape that is hindering access to climate finance as well as a lack of money, complaining especially about “complicated procedures, heavy reporting, delays in approval and disbursement”.
Adeang added that “the way we assess vulnerability matters”, adding that it should be measured by more than income. Naoero, for example, is classified by the World Bank as high-income, restricting which climate finance it is eligible for.
Action plan to improve access
On Thursday, the Australian government will present a statement and action plan on improving access to climate finance for small island developing states and least developed countries, which it is asking other countries and organisations to endorse.
The statement addresses some of these Pacific complaints as well as acknowledging that progress has already been made on simplifying access by multilateral development banks and climate funds.
In Fiji, Asian Development Bank head Masato Kanda said his institution is “tailoring our finance and operations to island realities” because “your children and their children should be able to grow old in the countries their ancestors have called home for millennia”.
The executive director of the Green Climate Fund (GCF), Mafalda Duarte, said that the GCF-backed coastal adaptation project leaders visited in Tuvalu shows that “climate finance works” although – as the project took eight years to implement – “it takes time, and therefore we have no time to waste”.
Australia calls for optimism
While Pacific leaders expressed concern that the world is set to blast past its agreed 1.5C warming limit, endangering their nations, Australia’s Prime Minister Anthony Albanese called for “optimism”. “If people think there is no hope, then they will not strive to get the change that we need,” he said.
He said that when he attended his first COP in 2005, Australia’s renewable energy target was 2%. Its target is now 82% renewable electricity by 2030.
While Albanese promoted Australia’s success at electrifying homes and businesses and rolling out renewables, he has been criticised by climate campaigners for extending the production of fossil fuels, including coal – largely for export.
France’s Minister for Ecological Transition Monique Barbut defended the European Union’s climate action at the pre-COP meeting. She said the continent was heating up and reducing emissions faster and providing more climate finance than anywhere else in the world.
“It is time for all major emitters to step up and do their fair share” on climate finance, she said. Most developing countries with large emissions have fiercely resisted joining the club of climate finance donors, arguing they have played a disproportionately small historic role in causing climate change.
Barbut, as well as Palau’s president Whipps, called for the next flagship scientific assessment report of the Intergovernmental Panel on Climate Change (IPCC) to be finished by COP33 in 2028, in time to inform the next global stocktake of national climate action.
This timeline has been opposed by countries like India, Saudi Arabia and China, who argue it would put an unfair burden on developing countries. Barbut said countries should “support the work of the IPCC rather than sabotage its calendar”.
Barbut said that governments should agree at COP31 to aim to raise the share of “clean electricity” in final energy consumption to 35% by 2035. The Turkish and Australian governments have pushed for this goal although without specifying that the electricity should be “clean”. Barbut added that COP31 should also agree to cut emissions of methane, a particularly potent greenhouse gas.
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Pacific leaders rail at climate finance failures after pre-COP trip to Tuvalu
Jacynta Fa’amau is a Pacific campaigner at global grassroots climate movement 350.org and a secretariat member of Pacific Climate Warriors.
The first thing that struck me was the sheer size of Queensland’s Saraji coal mine. Standing at the edge of the enormous pit, my brain scrambled for words as I scanned the earth’s open wound – a whole island could probably fit inside it.
Looking down, I noticed footprints of an emu and a koala, pressed and dried in what was once a puddle – signs of how drought had driven animals in desperate search of water, so dangerously close to the coal trucks and heavy machinery ahead.
Earlier this year, I joined a small group of Pacific Islanders on a journey through the Bowen Basin to learn from First Nations communities battling Australia’s mammoth coal industry. Of the more than 40 coal mines operating in the area, BHP & Mitsubishi Alliance’s Saraji mine is one of the largest. So it came as a painful shock to us when in August, the Australian government approved the mine’s extension just months after our visit.
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Witnessing coal extraction is devastating. It is bad enough to see what pillaging tonnes of coal can do to a mine’s immediate surroundings: dry creek beds, dwindling wildlife, denuded land. But to know that this coal will be shipped across the ocean, bring air pollution, and eventually lead to the destruction of Pacific islands thousands of miles away is another kind of heartbreak.
Rising ocean waters
I’m an Australian-born Samoan. In 2002, I visited my family home for the first time. My father took me to the rural community where generations of my family were raised. He did not have the words to describe how much has changed since rising ocean waters had taken away almost a third of the beach.
I learned of how we had to relocate my great‑great‑grandparents’ grave to higher ground twice in the last 15 years. Of how my cousins have to paddle out further to sea to catch fish, since warmer waters have destroyed much of the reef. Of how the ocean crashes so close to my uncle’s home that he had to build a new house further away.
We saw reflections of our own climate destruction in the Pacific when we shared these stories with our First Nations relatives at the edge of the Saraji mine. Murrawah Johnson and Teila Watson, both Birri Gubba and Gangulu women, made clear connections between their struggles and ours. “We don’t get to inherit our land and we don’t get to inherit our traditional roles. We are fighting a war on extinction,” Murrawah said.
Coal extraction devastated their lands and cultures – totems have disappeared, fresh water has become scarce – while the effects of using it have devastated ours. “King tide, cyclones, all the violence that has been enacted on your country and people is because of the violence that has been allowed here, to us and our country,” Teila said.
Wearing the mantle of climate leadership
This week, Australia is assuming the mantle of climate leadership as co-president and head of negotiations of this year’s UN Climate Change Conference, COP31. It will lead on deliberating the summit’s priorities as world leaders and climate negotiators descend on Fiji and Tuvalu for the pre-COP meetings.
Ironically, just days before the pre-COP began, the New South Wales Independent Planning Commission approved the largest-ever coal project the state has seen, set to emit an extra 800 million tonnes of carbon emissions. I joined the Pacific Climate Warriors and other communities in submitting about 4,000 appeals to oppose the project – yet these all fell on deaf ears.
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But the fight is not yet over. The project still requires federal approval to proceed, so every promise that Australia makes while at the helm of the climate talks counts. These promises will be measured against actual decisions it makes at home: to either lock us into more decades of climate pollution, or begin shutting down coal and gas once and for all.
Pacific leaders have made it clear that countries must align their policies with the 1.5-degree warming goal, a limit that we already know will be breached within the decade. Any chance of keeping this still within reach requires an immediate end to fossil fuel expansion and concrete plans to phase out existing projects. But success will be an uphill battle if COP31’s own head of negotiations refuses to lead by example.
Australia remains the second-largest coal exporter in the world. It is one of the very few industrialised countries under the Paris Agreement’s Annex I that still has no coal phase-out plan. Since 2022, the Albanese government has approved 37 new, expanded or extended coal, oil and gas projects. It is thus unsurprising that its own mitigation policies have been rated by Climate Action Tracker as “insufficient”, even without factoring in fossil fuel exports and related expansion.
Keeping 1.5C alive
Australia must course-correct to earn the mantle it has been given, especially by Pacific nations that backed the country’s bid for the COP31 co-presidency. As a first step, the government must end all coal expansion and explicitly declare a coal phase-out date. It’s the only way to show that it’s capable of leadership that moves beyond endlessly deliberating the “if”, and starts implementing the “how” of keeping the 1.5C target alive.
The dread I felt staring down at the abyss on the edge of that coal mine months ago still exists. I carry it with me as I show up at the pre-COP to demand that leaders heed the calls of Pacific people. But it is tempered with resolve to keep our lands and communities alive. We remain steadfast in our efforts to secure an outcome that protects people everywhere and brings us back below 1.5 degrees as soon as possible.
The post Coal mines and hypocrisy must not be Australia’s COP31 legacy appeared first on Climate Home News.
Coal mines and hypocrisy must not be Australia’s COP31 legacy
When José Antonio Kast took office as Chile’s new president in March, one of his first moves was to put the brakes on plans to expand two protected marine parks – raising doubts about the country’s high-profile bid to host the headquarters of the High Seas Treaty.
But during the UN General Assembly last month, the right-wing leader reaffirmed his leftist predecessor’s ambition for Chile to host the landmark global pact, which came into effect in January and provides a legal framework to protect the waters of the high seas beyond national jurisdiction that cover about two-thirds of the world’s oceans.
Hailing the country’s “maritime vocation”, Kast’s government said the bid to host the treaty’s secretariat in the port city of Valparaíso was state policy and testament to its commitment to multilateralism.
“For the government of Chile, it is of high interest to achieve this recognition, and we will carry out all the efforts to obtain the necessary support,” Foreign Minister Francisco Pérez Mackenna was quoted as saying by local media.
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Tough competition from Chinese, Belgian bids
But to garner the votes it needs, Chile must fend off competing bids by Belgium – which has proposed its well-connected capital, Brussels – and China, whose well-funded bid includes the provision of free premises in the coastal city of Xiamen and five years of free utility costs.
Parties to the treaty, formally called the Agreement on Marine Biological Diversity of Areas Beyond National Jurisdiction (BBNJ), will choose the headquarters at their first summit (COP1), in New York from January 11 to January 22, 2027. They will seek consensus, falling back on a two-thirds majority in successive secret ballots.
Chile has offered to provide a restored waterside warehouse “at its own expense” as office space, pitching itself to developing countries as a Global South alternative to Europe-centred Brussels. Among richer countries, it is promoting its democratic credentials and greater transparency as an alternative to China.
Rolling back environmental safeguards at home?
While the South American country remains the top pick among environmental campaigners and other civil society groups, critics of Kast’s government say recent policy moves may make it harder for the country to garner the support it needs.
On March 12, the day after Kast took office, the Environment Ministry withdrew 43 decrees awaiting legal approval, including a push to expand the Mar de Juan Fernández and Nazca-Desventuradas marine parks – vast protected areas in Chile’s Pacific Ocean waters. Both remain under review, the ministry told Climate Home News.
The decrees also included an emission standard for coal power plants and regulations for Chile’s new biodiversity and protected areas service.
A month after holding up the decrees, Kast questioned aspects of Chile’s urban wetlands protection law, suggesting it was sometimes an unjustified obstacle to much-needed housing development, and his administration has also sought to ease the rules on salmon farming in the world’s second-largest producer.
In August, the Constitutional Court struck down the salmon farming reform after a challenge by opposition lawmakers and warnings from green groups including Greenpeace, which said it could help farms relocate into protected areas such as the Kawésqar National Reserve.
Valparaíso mayor Camila Nieto, from former leftist President Gabriel Boric’s party, backs the bid to host the High Seas Treaty, but said she hoped “the government’s support also translates into public policies consistent with the goals of protecting and conserving the oceans”.
“The decisions a country makes on environmental matters can influence international perceptions of its commitment to protecting the oceans. That is something we cannot ignore,” Nieto told Climate Home News.
China’s bid stirs concerns over data access, fishing
Chile’s past record on marine protection – it has protected 43% of its jurisdictional waters – could yet give it an edge.
“Chile deserves it for its conservation record as a state. For more than 15 years Chile has been following this path,” Liesbeth van der Meer, executive director at conservation group Oceana in Chile, told Climate Home News.
Concerns in some quarters about the rival bid by China – for example, over a potential conflict of interest due to the vast Chinese fishing industry – may also weigh in Chile’s favour, experts say.
Chinese-flagged vessels did about 30% of detected high seas fishing between 2022 and 2024, according to an Oceana analysis of Global Fishing Watch data. China also sponsors five of the International Seabed Authority’s 31 deep-sea mining exploration contracts, more than any other country.
The secretariat would host sensitive marine data, making transparency paramount, experts say.
China says hosting the secretariat in Xiamen would help make the treaty more globally representative, fostering cooperation between rich and developing countries and aiding equitable access to marine science and technology.
Wang Yi, China’s minister of foreign affairs, said in a statement that the country has “all along championed true multilateralism” and “firmly defended” UN institutions. Given Xiamen’s $38-billion ocean industry, the city lives up to the treaty’s “significance and promising future”, he added.
Meanwhile, Chile is proposing the treaty’s first high seas marine protected area for the Salas y Gómez and Nazca ridges, a chain of more than 110 seamounts stretching about 4,000 km from off Peru to Rapa Nui (Easter Island) that is rich in endemic fish and other marine species.
The ridges are “a true oasis of productivity”, said Carlos Gaymer, director of the Centre for Ecology and Sustainable Management of Oceanic Islands at Universidad Católica del Norte and co-author of a 2021 scientific review of the area.
The water is so clear that phytoplankton thrive around 200 metres down, feeding zooplankton, small fish and, up the chain, sharks and seabirds. Whales, turtles and sharks use the ridges as “a real highway” across the Pacific, Gaymer said. Parts of the Nazca ridge are likely nursery grounds for jack mackerel and swordfish.
Chile has already asked the body that regulates the industry in the area – the South Pacific Regional Fisheries Management Organisation (SPRFMO) – to close the ridges to all fishing vessels. According to Chilean data, more than 80% of fishing in the area involves Chinese vessels.
Meeting on the Chilean request in early September, SPRFMO’s scientific committee agreed only to recommend closing the area to bottom fishing. SPRFMO’s commission will take the final decision at its next meeting, in early 2027.
For Gaymer, Chile’s push to close the area to fishing should be seen as a “starting point” for the treaty proposal.
“Every time there’s a new expedition, species new to science appear,” Gaymer said. “If you don’t protect areas like these … those species simply disappear from the planet.”
The post Race to host High Seas Treaty HQ heats up as Chile reaffirms bid appeared first on Climate Home News.
Race to host High Seas Treaty HQ heats up as Chile reaffirms bid
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