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Antarctic sea ice has reached its maximum extent for the year, clocking in at the second lowest in a record stretching back to 1979, according to provisional data from the US National Snow and Ice Data Centre (NSIDC). 

Over the past two years, Antarctic sea ice has been “way outside anything we have witnessed in our satellite record for their winter months”, an expert tells Carbon Brief.

Meanwhile, at the Earth’s other pole, the Arctic reached its summer minimum extent on 11 September, ranking as the seventh lowest on record, according to the NSIDC

The organisation notes that “the last 18 years are the lowest 18 Arctic sea ice extents in the satellite record”.

The combination of below-average Arctic and Antarctic sea ice extents means that global sea ice extent has been at near-record lows over the past six months.

Antarctic maximum

For decades, scientists have been using satellite data to track the annual cycle of sea ice growth and melt at the world’s poles. This is a key way to monitor the “health” of sea ice in both the Arctic and Antarctic.

This year, Antarctic sea ice extent reached its annual maximum extent of 17.2m square kilometres (km2) on 19 September, according to the NSIDC. This is the second lowest in a satellite record stretching back 46 years, and 1.6m km2 smaller than the 1981-2010 average maximum, the NSIDC notes.

However, the NSIDC cautions that there is “some uncertainty in the estimate and date of the maximum because of an outage in the input source data” over 12-18 September.

Dr Zack Labe is a research physical scientist at NOAA’s Geophysical Fluid Dynamics Laboratory. He tells Carbon Brief that there is ongoing research in the polar community to understand whether Antarctic sea ice is undergoing a “regime shift”.

He adds that the past two years have been “way outside anything we have witnessed in our satellite record for their winter months” for Antarctic sea ice.

For example, Dr Ariaan Purich – from the school of Earth, atmosphere and environment at Monash University – explains to Carbon Brief:

“Our research suggests ocean warming has been important in pushing sea ice into this low-coverage state, and we also see preliminary indications of changed sea ice behaviour, suggesting that the underlying processes controlling Antarctic sea ice coverage may have altered.”

Global sea ice extent – a metric that combines Arctic and Antarctic sea ice extent – is currently tracking near the record low extent set last year.

The graphic below shows global sea ice extent over 1978-2024, where red indicates the 2024 extent and shades of blue indicate different years over 1978-2023 (darker colours indicate more recent years).


Labe tells Carbon Brief that global sea ice extent is an “unconventional metric”, but says it “really summarises the state of polar climate right now, which is that sea ice is unusually low all across the high latitude regions of our planet”.

Record-breaking Antarctic season

The Antarctic has seen a record-breaking year. In September 2023, Antarctic sea ice reached a new all-time low maximum extent, sparking widespread media attention. In the year that followed, sea ice extent has since continued to track near record lows.

On 20 February 2024, the Antarctic hit its annual minimum, tying with 2022 for the second-lowest minimum in the 46-year satellite record. Dr Mark Serreze, director of the NSIDC told Carbon Brief at the time that more warm ocean water was reaching the surface, melting ice and keeping more ice from forming.

He said that we “must wait and see” whether this is a “temporary effect” or if the Antarctic has entered a “new regime”.

Antarctic sea ice extent “expanded slowly” throughout March, and ended the month tied with several other years for third-lowest sea ice extent on record for the time of year, according to the NSIDC.

Throughout April, Antarctic sea ice extent continued to grow “relatively uniformly”. The continent saw temperatures of 3-5C above average in the west, while in the east, temperatures were 4-7C below average, the NSIDC adds.

Throughout May 2024, the rate of growth was slow relative to the 1981-2010 average, but “still much faster than last year”, the NSIDC says. And into June, Antarctic sea ice continued to track “well below all previous years except for 2023”, it adds.

The NSIDC finds that by the end of June, sea ice extent was more than 2m km2 below the 1981-2010 average, but still 500,000km2 above the exceptionally-low 2023 extent for the time of year.

By late July, Antarctic sea ice extent was “very close to the levels” seen in 2023. By the end of July, Antarctic sea ice was more than 2.1m km2 below the 1981-2010 average, and 190,000 km2 above 2023 levels, the NSIDC says.

The graphic below shows Antarctic sea ice extent between 1978 and 2024, where red indicates the 2024 extent and shades of blue indicate different years over 1978-2023 (darker colours indicate more recent years).


After slow growth from May to July, Antarctic sea ice began to “rapidly expand” in August, according to the NSIDC. It says “ice growth for the first two weeks of August was 1.5m km2 per day, among the fastest ice growth rates seen in the 46-year record for this time of year”.

However, growth “stalled” over 16-25 August and, by the end of the month, Antarctic sea ice extent stood at 16.86m km2 – the second lowest in the satellite record for that date ,the NSIDC says.

It notes that sea ice extent is “particularly low in the far eastern Weddell Sea, the south-west Indian Ocean and in the Amundsen Sea”.

Map showing the main regions of the Antarctic. Source: Carbon Brief
Map showing the main regions of the Antarctic. Source: Carbon Brief

Arctic minimum

At the other end of the world, Arctic sea ice extent has been melting towards its annual minimum for the past six months. It reached its minimum in September, and has now begun to grow again.

Back on 14 March, the Arctic hit its annual maximum, which was the 14th lowest in the satellite record. The NSIDC finds that despite favourable winds that encouraged sea ice formation, the maximum sea ice extent was 640,000km2 smaller than the 1981-2010 average maximum.

As temperatures warmed in the Arctic, sea ice continued to melt. By the start of April 2024, Arctic sea ice extent had dropped by about 278,000km2 below the March maximum, the NSIDC says.

April sea ice loss in the Arctic proceeded at a near-average rate overall, with most ice loss in the Bering Sea and Sea of Okhotsk, according to the NSIDC. The average Arctic sea ice extent for April 2024 was 14.12m km2, placing it 16th lowest in the satellite record.

Map showing main regions of the Arctic. Source: Carbon Brief
Map showing main regions of the Arctic. Source: Carbon Brief

The NSIDC says that although average global temperatures in April were at a record high, temperatures in the Arctic were “well below average” by up to 3-5C in some regions.

“This May, early ice loss in the eastern part of Hudson Bay was striking,” the NSIDC says. Usually, the Hudson Bay is “nearly completely ice covered through May”, it adds. However, this year saw unusually “strong and persistent” winds from the east push ice from the eastern coast into open water, resulting in record low sea ice extent in the Hudson Bay.

Zack Labe on X/Twitter (@ZLabe): Sea ice across the Hudson Bay (Canada) is observing a historic spring with record early losses of #Arctic sea ice... Each line represents one year from 1979 (purple) to 2023 (white). 2024 is in red. Data from @NSIDC using the passive microwave satellite record.

The NSIDC notes that by 1 June 2024, sea ice extent in the Hudson Bay was 205,000km2 below the 1981-2010 average – 65,000km2 below the previous record low set in 2015.

Arctic sea ice extent in June retreated more slowly than usual and, by the end of the month, it was “tracking above all years since 2012 except for 2013 and 2015”, it adds.

July is the warmest month in the Arctic and sees the most rapid sea ice loss, the NSIDC says. It finds that Arctic sea ice “retreated rapidly” in July. The region lost 113,000km2 of ice per day throughout the month – faster than the 1981-2010 average pace of 87,000km2 per day.

Ice loss during the month was greatest in the Kara and East Siberian Seas, Baffin Bay, Hudson Bay, and the Canadian Archipelago, the NSIDC says. Meanwhile, unusually for the time of year, a small patch of ice remained in the Hudson Bay by the end of the month. It adds that air temperatures were near average overall, with several areas slightly cooler than average.

By the end of July, Arctic sea ice extent was the third-lowest extent in the 46-year satellite record by the end of the month. Rapid Arctic ice loss continued into the first week of August, and by mid-August, sea ice extent was the fourth lowest on record, the NSIDC says.

The graphic below shows Arctic sea ice extent between 1978 and 2024, where red indicates the 2024 extent and shades of blue indicate different years over 1978-2023, where darker colours indicate more recent years.


Throughout August, ice loss slowed down in response to “waning sunlight and decreasing air temperatures”, as is typical for this time of year, the NSIDC says. By the end of August, Arctic sea ice extent was 4.55m km2 – the fourth lowest in the satellite record.

The map below shows Arctic sea ice average extent for September 2024, where the pink line shows the 1981-2010 average.

Arctic sea ice extent in September 2024. Average sea ice edge for 1981-2010 is shown in pink. Source: NSIDC.
Arctic sea ice extent in September 2024. Average sea ice edge for 1981-2010 is shown in pink. Source: NSIDC.

Arctic sea ice reached its annual minimum extent of 4.28m km2 on 11 September 2024, ranking as the seventh lowest in the 46-year satellite record.

The NSIDC adds that “the last 18 years are the lowest 18 Arctic sea ice extents in the satellite record”.

On thin ice

Labe tells Carbon Brief that Arctic sea ice this year has been “unusually thin”, explaining that the Arctic has seen “unusually low sea-ice concentration with the ice being more spread out and with more areas of open water found between the ice floes”.

This has resulted in near record-low total Arctic sea ice volume.

Zack Labe on X/Twitter (@ZLabe): There was an accelerated loss of sea ice volume last month in the #Arctic. We are not far from a record low. Each line represents one year from 1979 [dark blue] to 2023 [dark red]. This year is shown in yellow - now updated through all of August 2024

Prof Alexandra Jahn is an associate professor at the University of Colorado’s Institute of Arctic and Alpine Research. She tells Carbon Brief that natural variability has contributed to the observed loss of ice – “especially during the early 21st century”.

However, she adds that internal variability alone cannot completely explain the extent of the loss we have seen, and human-caused greenhouse gas emissions “are required to get an Arctic sea ice loss as large as observed”.

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Fossil fuel expansion threatens COP31 hosts’ credibility, experts warn

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Türkiye and Australia risk losing their credibility as hosts of this year’s COP31 UN climate summit if they keep betting on fossil fuels at home, climate policy experts have warned. 

As governments are expected to continue fraught talks over how to advance the global transition away from oil, coal and gas in Antalya this November, both of the co-host countries are pursuing fossil fuel expansion at home, without a national timeline to phase out their use.

Türkiye has accelerated its rollout of wind and solar energy in recent years. But that progress has yet to make a dent in the country’s dependence on fossil fuels for power, as demand growth has outpaced the renewables build-out, new analysis by Climate Action Tracker (CAT) has found.

The share of electricity generated by burning coal and fossil gas – 56% in 2025 – has barely changed since 2019, and total fossil fuel use in the power sector, and the emissions it produces, are still rising, according to the report released on Friday.

The Turkish government has also signalled that fossil fuels will remain a central component of its energy mix and has outlined plans to expand the country’s burgeoning domestic gas production in the Black Sea.

‘Need to demonstrate seriousness’

Australia, which will chair the Antalya negotiations, relies on fossil fuels for over 60% of its electricity, with coal alone still supplying 45%. According to experts, it lacks an ambitious plan to shift away from fossil fuels at home, relying heavily on carbon offsetting to reach its climate targets.

Australia is also the world’s third-largest fossil fuel exporter and has plans to expand its coal and gas production, which is backed by significant government subsidies. It recently upset climate groups by approving an extension of the Saraji open-cut coal mine in Queensland.  

Türkiye says it has “final decision” at COP31 despite Australia running negotiations

Jennifer Morgan, a senior fellow with the Fletcher School of Law and Diplomacy at Tufts University and former climate envoy for Germany, said Türkiye and Australia need to demonstrate their seriousness about their COP presidency roles by leading by example on the energy transition.

“They have made progress in renewable energy,” she told reporters this week. “But I think their credibility – and their ability to therefore bring momentum and good outcomes to the COP – will depend on their taking further action at home.” 

Türkiye’s electrification homework

The co-hosts’ fossil fuel policies are being scrutinised in the run-up to the annual UN climate summit, with much riding on the signal climate diplomacy sends on the energy transition.

Türkiye has so far stopped short of putting any overt political capital behind the fossil fuel transition itself. It has instead been rallying support for a new global electrification target of 35% by 2035, seen as the centrepiece of this year’s non-negotiated Action Agenda put forward by Ankara.

Electrification emerges as COP31 priority

COP31 president Murat Kurum said last week the push to electrify economies – through measures like electric vehicles and heat pumps – will “automatically” lead to a reduction in the use of fossil fuels.

Türkiye’s own energy plan projects the country’s electrification rate would fall short on the global target and only hit 25% by 2035, according to the CAT report, which called for a “substantial step-change” in electrification policies and the deployment of more renewable power and grid infrastructure. 

Coal still dominant

CAT’s analysts also warned that, without a parallel phase-out of fossil fuels, rising electricity demand risks being met in part by coal and gas, failing to deliver the emissions reductions the electrification target is meant to achieve. 

Türkiye has had some success in its clean energy build-out: the share of electricity generation from wind and solar rose to 22% in 2025, up from 12% in 2020, according to the CAT report.

But coal’s role in Türkiye’s electricity mix has also grown, in both its share and absolute terms, over the past decade. And while reliance on fossil gas has declined overall, it still plays an important role in Ankara’s energy policy, which is pushing to boost domestic gas production in the Black Sea.

Pilot boats assist the Osman Gazi as it navigates the Bosphorus on its way to the Black Sea on May 29, 2025 in Istanbul, Turkey. The platform will dock at the Filyos Port in the Black Sea and will stay for a 20 year mission and will provide double the natural gas intake of Turkey to 20 million cubic meters per day. (Photo by Chris McGrath/Getty Images)

Pilot boats assist the Osman Gazi as it navigates the Bosphorus on its way to the Black Sea on May 29, 2025 in Istanbul, Turkey. The platform will dock at the Filyos Port in the Black Sea and will stay for a 20 year mission and will provide double the natural gas intake of Turkey to 20 million cubic meters per day. (Photo by Chris McGrath/Getty Images)

Dr Niklas Höhne from the NewClimate Institute said the government could demonstrate leadership as COP31 president by building on its recent successes in increasing its renewable energy capacity and announcing targets and plans to phase out coal and gas ahead of the summit.

According to CAT, Türkiye should phase out coal by 2040 and fossil gas by 2045 at the latest to align its power sector with global efforts to limit the rise in global temperatures to 1.5C above preindustrial times. 

Türkiye quiet on fossil fuel roadmap

Ümit Şahin, coordinator of climate change studies at the Istanbul Policy Center (IPM), said Türkiye’s strategy is to approach the fossil fuel debate exclusively from the “end-use point of view”.

“I don’t expect any push from the Turkish presidency to the producer countries in terms of fossil fuel production,” he told reporters.

Neither does Şahin believe the Turkish presidency will throw its political weight behind another big-ticket item for COP31: a new global roadmap to transition away from fossil fuels. 

Brazil took on the responsibility to voluntarily draft this document outside of the formal negotiations as a way to break the deadlock at last year’s UN summit in Belém when governments clashed over whether to develop one. 

The outgoing COP30 presidency will deliver the roadmap in early November – but it will be up to Türkiye and Australia to guide countries towards a decision on how the blueprint will be taken forward, either inside or outside the negotiations.

Leadership needed

Australia’s Chris Bowen, COP31’s president of negotiations, promised to lobby producing countries to deliver a “meaningful step forward” on the fossil fuel transition in an interview with The Guardian earlier this year. But he has been quiet on the role Australia sees for the fossil fuel transition roadmap. 

Natalie Jones, senior policy advisor at the International Institute for Sustainable Development (IISD), said the COP31 co-presidents “must provide clear leadership” on this process.

“This roadmap cannot be left in a dusty drawer,” she told journalists. “Rather, it must be translated into action, with all countries identifying what elements they can adopt or develop in their own national roadmap.”

    Like Türkiye, Australia has yet to produce a national blueprint for winding down coal, gas and oil. Rather than moving toward a phase-out, state and federal governments have kept expanding fossil fuel licensing over the past year, according to a new analysis published this month by Climate Analytics.

    Under existing policy, both coal and gas are on track to remain in Australia’s power system as late as 2050 – a trajectory the report defines as incompatible with the 1.5C limit the country says it’s committed to. 

    No binding end dates for the Netherlands

    Analysts are watching out for national transition roadmaps as a bellwether for governments that claim to be leaders in the global shift away from fossil fuels.

    The climate and environment ministers of Colombia and the Netherlands, which are co-hosting the Santa Marta conference, embrace on the podium during the high-level segment in Santa Marta, Colombia, April 28, 2026 (Photo: Colombia Ministry of Environment and Sustainable Development)

    The climate and environment ministers of Colombia and the Netherlands, which are co-hosting the Santa Marta conference, embrace on the podium during the high-level segment in Santa Marta, Colombia, April 28, 2026 (Photo: Colombia Ministry of Environment and Sustainable Development)

    The Netherlands, which co-hosted the first fossil fuel transition conference in Santa Marta this year, published its own domestic roadmap earlier this week. The document followed through on a pledge that “leadership on transitioning away from fossil fuels must be backed by concrete action, not just ambitious words”, said a spokesperson for Stientje van Veldhoven, the Dutch minister for climate policy.

    But experts criticised the plan for failing to set a binding end date for the country’s fossil fuel production and use. While targeting a rapid increase in renewables capacity, the Dutch government only commits to phasing out oil, gas and coal “in the energy and feedstock system to eventually zero, and to minimise fossil use” by 2050. 

    Yvo de Boer, a former Dutch diplomat and executive secretary of the UN climate body, said the Dutch roadmap falls short of what’s needed to give industry the confidence to deploy capital in support of the energy transition with greater predictability. 

    “Ultimately, a roadmap without deadlines is nothing more than a footpath paved with good intentions,” he added, writing on LinkedIn. 

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    How clean energy can boost business for Africa’s food producers

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    Despite millions of dollars in grants and technical help for African businesses to power farming and other food production activities with renewable energy, most efforts remain stuck at the early stages because they struggle to find the investors, markets and expertise they need to grow.

    This was the message from a coalition of global institutions working on energy, water and agriculture at this month’s Africa Food Systems Forum in Kigali, Rwanda.

    “Energy, agriculture, water and nutrition actors rarely design solutions together,” the Agri-Energy Coalition said in a Call to Action on powering food systems with clean energy.

    Using more renewables – especially solar power – to drive food systems would reduce food losses, ensure year-round availability and affordability of healthy foods, and improve productivity, income and resilience among farmers, food processors and other small enterprises, the coalition added.

    In an interview with Climate Home News at the forum, Olamide Niyi-Afuye, CEO of the Africa Minigrid Developers Association (AMDA) – a body representing private-sector developers of small-scale, off-grid electricity systems across the continent – said its members are starting to recognise this interdependence and are increasingly considering businesses that combine energy with agricultural activities.

      This, Niyi-Afuye added, could lead to greater supply and use of clean power for key processes like irrigation, food processing and storage, creating new sources of revenue for both sectors.

      CHN: Conversations at the Africa Food Systems Forum highlighted how organisations working in energy and agriculture often operate in silos. What has hampered their collaboration, and how has that affected Africa’s economic development?

      A: Most mini-grid companies in Africa were primarily incentivised to achieve connections. If you look at some ongoing projects, you see a cost-per-connection model [of revenue]. When a subsidy is tied to achieving a connection, regardless of whether it is a productive connection, you might not notice the problem until five years down the line, when you realise the cash flows are not what you projected.

      Despite African walkout, fractious land COP ends without drought deal

      So now we’re in a “come-to-Jesus moment” as an industry, where we’re righting the wrongs and adjusting our business models to make sure companies do not go bust and there is some level of sustainability over the long term.

      The saying is not wrong that we’ve been working in our own silos because we’ve focused on the smaller things instead of the helicopter view. There needs to be cross-pollination [between the energy and agriculture sectors] because, if we are thinking about industrialisation, energy is a key driver of industrialisation. We will not achieve that if we’re not in the room and part of those conversations.

      CHN: Productive use of energy is intended to ensure electricity access goes beyond lighting homes to improving livelihoods, creating jobs and powering equipment. But what happens when farmers cannot afford the equipment they need to do that? How can energy, agriculture and equipment players work together to make the transition more accessible?

      A: That’s why we’re having conversations with companies set up to de-risk the agriculture sector. By leveraging that connection, we’re able to aggregate potential energy needs and develop instruments that make equipment more affordable through bulk procurement.

      We can have arrangements that make it easier for farmers and food producers to lease equipment and eventually own it over a period. There’s no real pressure to recover the capital very quickly because you’re looking at scale.

      Rice farmer Danjuma Okuwa adjusts his newly installed electric rice milling machine at his compound in Rukubi, Nasarawa, Nigeria, September 27, 2022. (Thomson Reuters Foundation/Afolabi Sotunde)

      Rice farmer Danjuma Okuwa adjusts his newly installed electric rice milling machine at his compound in Rukubi, Nasarawa, Nigeria, September 27, 2022. (Thomson Reuters Foundation/Afolabi Sotunde)

      There is a whole lot across the agricultural value chain that needs energy, from farming and harvesting to food processing and value-addition. We need to understand the energy needs across the value chain and bring our members in to provide solutions.

      Developers do not necessarily need to provide every productive-use solution themselves. They can partner with equipment suppliers, financiers, agribusinesses and other service providers to enable customers to use electricity productively. The objective is simple: do not just electrify communities; enable economic activity that uses that electricity.

      CHN: When Africa’s industrialisation is discussed, you hear things like renewables cannot provide enough baseload, while some food processors are sceptical about switching to renewable energy because of these concerns about reliability. What is your response?

      A: It’s not a controversial statement to say that a typical baseload is usually from the grid, and it’s usually from multiple sources including renewable energy. For large-scale operations, we can look at blending multiple sources of energy. But how do we solve the problem of a mid-sized farmer? We can solve it with a mini-grid using renewable energy.

      Comment: Every country needs a model to help optimise its energy transition

      If you go to a small farmer in a rural area, they don’t care about what source of energy they’re getting. They just want something that can help them get from A to B. If you look at the direct energy needs of farmers and food processors, I’m sure 90 percent of their consumption can be solved by renewable energy. Let’s start with that problem first. Then, as they scale, they might need to ramp up, and we can start talking about a bigger baseload.

      CHN: How much agricultural value is lost because farmers and food businesses lack reliable, affordable electricity?

      A: If you look at, for example, the fact that we need to maybe plant tomatoes or strawberries in Jos before it gets to Lagos [Nigeria], which most likely is by road, I can assure you that a good chunk, if not stored properly, would be bad by then. So the fact that we do not have energy is in itself a lost opportunity to maximise the potential of the agriculture sector. So until we’ve solved the energy problem, we will not salvage waste – and for me that is a lost opportunity.

      CHN: AGRA, an institution focused on scaling agricultural innovations to help smallholder farmers, estimates a massive shortfall between current investments in the continent’s food systems and what is actually needed to build a resilient, profitable agricultural economy – to the tune of $180 billion per year. Can integrating energy into food systems help bridge that gap?

      A: Yes – if energy can help unlock the potential to earn more money, investors will follow the money. Investments go where there is certainty, and until there is certainty around cash flow and revenue, investment will be limited.

      My vision is to see more Power Purchase Agreements (PPAs) being signed between energy players and the agriculture sector. We can start by getting people into the room, understanding their pain points, crafting a framework and documentation that works for both parties, and then seeing deals happen.

      This interview was shortened and edited for clarity.

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      Climate Change

      Human security relies on adapting to the world’s new climate reality

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      Cristina Rumbaitis del Rio is a senior advisor on adaptation and resilience with the United Nations Foundation and Mattias Söderberg is global climate lead at Danish NGO DanChurchAid.

      Recent extreme events – from wildfires and heatwaves in Europe to flash flooding following a glacier collapse in Nepal – have shocked and devastated communities, bringing years of warnings about such climate impacts to the doorstep of communities around the world.

      One thing is certain: the new climate reality is here – and the adaptation strategies designed for yesterday’s world are no longer sufficient.

      Attribution science has since shown that the hotter and more frequent heatwaves we’re experiencing around the world would have been virtually impossible without today’s high concentrations of greenhouse gases in the atmosphere. Climate shocks are now so severe that they reverberate through supply chains, food and water systems, financial markets and the movement of people.

        They must be a catalyst for a new way of thinking about adaptation and resilience, and how we finance solutions that work. A failure to invest in adaptation in one region can create costs far beyond it, which is why the concept of shared resilience is critical for leaders to grasp.

        Investment not charity

        At the UN General Assembly (UNGA 81) this month, leaders have an opportunity to translate today’s urgency into concrete commitments on adaptation and loss and damage finance ahead of COP31.

        Those commitments are needed to underpin global stability, shared prosperity and human security. Governments should use this moment to show what a new response looks like: finance that reaches communities faster, supports locally grounded solutions, strengthens national systems, and helps countries prepare before the next shock arrives.

        If we want sustained economic growth, food and water security, and resilient and prosperous societies across every region, adaptation must be at the heart of today’s development and security agenda. It cannot be just a future planning consideration or a narrow issue for climate ministries. Adaptation is now everyone’s business – and it must be financed fast and fair.

        UN Secretary-General António Guterres has repeatedly framed climate finance as an investment rather than charity, warning that “a world in climate chaos cannot be a world at peace” and describing human security as freedom from the chronic and sudden disruptions that climate change multiplies.

        What’s more, adaptation delivers a real return-on-investment, with researchers estimating that every dollar invested produces $10 in benefits, saving lives, protecting livelihoods, and reducing the costs of future disasters.

        Hitting adaptation limits

        The urgency to scale adaptation systematically is growing. The newly released “Limiting Overshoot” report from the UN Environment Programme (UNEP) confirms what scientists have long warned: exceeding global warming of 1.5C is now unavoidable under current policies. Yet, how high temperatures rise – and how long the world remains above the 1.5C threshold – will determine whether communities, economies and entire ecosystems can keep pace.

        There are limits to adaptation. When we breach those limits, lives and livelihoods are lost, and people and ecosystems suffer greatly. We cannot simply build yesterday’s infrastructure a little stronger and assume it will be enough.

        Nepal flood destruction shows “limits to adaptation”, scientists say

        We need to fundamentally change the systems that determine how societies anticipate, absorb and recover from both immediate and evolving non-linear climate shocks. This includes transforming physical systems, such as infrastructure, and the governance systems that affect where and how we live to how we maintain our health and wellbeing.

        Finance today is nowhere near the scale of the challenge.

        The UNEP “Adaptation Gap Report 2025” estimates the shortfall in adaptation finance in developing countries at $284 billion–$339 billion a year – roughly 12 to 14 times current international public flows of around $26 billion. That gap is a development, economic and human security problem, especially for the most vulnerable populations who have contributed the least to causing the climate crisis.

        Building resilience into financial systems

        There are already signs of what a more systemic adaptation response could look like. Communities around the world are delivering practical solutions at local level, even as adaptation finance remains notoriously, and appallingly, difficult to access. Cyclone-resistant homes, local forecasting capacities, drought-resistant crops, heat insurance for pregnant informal workers and mangrove restoration are rooted in local knowledge and lived experience, while delivering benefits far beyond the communities where they originate from.

        But local innovation alone is not enough; the systems around it need to be resilient too.

        Jamaica offers one example. The country has built a multi-layered disaster-risk financing framework, including a catastrophe bond and contingency funds, through sustained fiscal discipline and proactive investment. Its debt-to-GDP ratio fell from around 147% in 2012 to around 62% in 202-25. That groundwork matters when disaster strikes.

        Hurricane Melissa’s destruction shows need for climate resilience push

        Following Hurricane Melissa, Jamaica was able to secure billions of dollars in reconstruction financing from multilateral banks – finance that might otherwise have been much harder to access. The lesson is clear: resilience can be built into the financial architecture of a country before a crisis arrives. That is the shift we now need to make at scale.

        The foundations already exist – in Kingston’s fiscal reforms, in early-warning systems from the Sahel to the Pacific, and in every community that adapted before disaster struck. What is still missing is the political will, and the finance, to take what works and put it to work everywhere, at the speed our world’s new climate reality demands.

        To hear more on this issue from high-level officials and experts, sign up for this event during Climate Week NYC, at 8am EDT on September 24 (in person or online), moderated by Climate Home News Editor Megan Rowling: Adapting to the New Climate Reality: Why Accelerating Impacts Demand New Responses.

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