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At a key leaders’ summit in Palau, Pacific island nations burdened by worsening climate change impacts and costly fossil fuel imports called for November’s COP31 climate summit to deliver finance to help the region transition to renewable energy and build more resilient communities.

Heads of government from the 18-member Pacific Islands Forum (PIF) – which includes COP31 co-president Australia – met in Palau’s capital Koror for a week-long summit, where they demanded access to climate finance, ocean action and a regional boost for renewables at COP31.

Palau’s president Surangel Whipps Jr. said during a plenary session that the Pacific must focus on delivering climate and ocean commitments. “It will require greater regional leadership, stronger regional coordination and, above all, unity of purpose,” he said.

The meeting, which ended last Friday, was marked by the absence of some leaders – among them the heads of state of the Solomon Islands, Vanuatu and Fiji, which will host a preparatory session for COP31 in October (referred to as the pre-COP31). There were also tensions over Taiwan’s participation, with China objecting to its presence as an observer.

The forum’s final declaration, published after it ended and signed by all its members, reaffirms that climate change is the “single greatest threat to the security, livelihoods and wellbeing of Pacific peoples”, and notes “the importance of a focused, high-level declaration” at the pre-COP31 to build “political momentum towards COP31”.

    Australia and Pacific islands have invited world leaders to attend the pre-COP31 gathering, which will be held in Fiji and Tuvalu from October 5 to 8. While usually a technical meeting for negotiators, the island nations aim to issue a political declaration at the gathering calling for strong outcomes in Türkiye.

    Chris Bowen, Australia’s climate minister and COP31 president of negotiations, said in a speech during the Pacific forum that his country is “determined to use COP31 to progress the agenda to make it easier for countries to access the climate finance they need”.

    “We won’t miss the opportunity to ensure COP31 is a Pacific COP. Not just because of the location of pre-COP but because of the agenda we are shaping through the Action Agenda at COP31,” he said.

    The Action Agenda is a large portfolio of climate initiatives and coalitions uniting governments, businesses and civil society outside of the formal negotiations on everything from health to methane emissions.

    Renewable energy investment plan

    Announced a year ago, the island nations launched a $14-billion investment plan for a “100% Renewable Blue Pacific” at the forum in Palau. The plan lists strategic projects that would reduce the region’s high dependence on fossil fuel imports, whose soaring costs have become a major burden since the Iran war.

    The projects include a $52-million programme managed by Australia to develop off-grid renewables in remote communities across the Pacific, as well as a $100-million blended finance fund aimed at supporting private-sector investments in wind and solar, among others.

    Currently, some countries in the Pacific are spending up to a quarter of their GDP importing diesel to power electricity generation, according to a new report by the University of New South Wales in Australia. The investment plan launched at the forum aims to reduce these costs by adding 2.2 gigawatts of renewable generation and around 9 gigawatt hours of electricity storage.

    To channel funds into the region, the plan also highlights the role of the recently established Pacific Resilience Facility (PRF), a regional fund that seeks to swiftly disburse funds to climate-vulnerable communities at the local level. Bowen said he would promote the facility to world leaders attending COP31 and “ask for their support”.

    Australian prime minister Anthony Albanese at the Pacific Islands Forum plenary in Palau.
    Australian prime minister Anthony Albanese at the Pacific Islands Forum plenary in Palau. (Photo: PIF Secretariat)

    Call to transition away from fossil fuels

    Separately, the forum endorsed the Belau Declaration which emphasises the need to keep the 1.5C Paris Agreement temperature goal alive. A UN report last week showed that overshooting this limit is now inevitable, but deep emissions cuts could still bring global temperatures back down by the end of the century.

    Pacific nations expect to rally support for this declaration at the pre-COP, with Fiji’s climate minister Lynda Tabuya saying in a statement: “Palau is where we build the political mandate. Pre-COP is where we take it to the world.”

    The political declaration also says that countries must accelerate the global transition away from fossil fuels “towards a renewable energy future”, and calls for greater recognition of the importance of ocean health in addressing climate change.

    UN sets out narrow path back to 1.5C warming after inevitable overshoot

    As part of the forum’s outcomes in Palau, countries also noted Tuvalu’s efforts to host the second global conference on transitioning away from fossil fuels, which will gather government representatives in April next year to follow up on this year’s inaugural conference in Santa Marta, Colombia.

    Speaking to journalists at the forum, Vanuatu’s climate minister Ralph Regenvanu questioned Australia’s role in talks about phasing out fossil fuels at COP31, adding that “the very least a country like Australia should be doing is stopping future expansion, and it’s not doing that”. During the PIF, the country approved the extension of a major mine that digs and exports coal for steel-making, giving it permission to keep producing until 2055.

    Rising seas trigger “development emergency”

    As leaders met in one of the world’s regions most threatened by sea-level rise, UN Secretary-General António Guterres released a new report warning that rising seas are now “one of the most profound threats to populations around the world in developed and developing states alike”.

    Presenting the report at UN headquarters in New York, Assistant Secretary-General for Economic Development Navid Hanif said rising sea levels are not a “future risk any more” but an accelerating “development emergency” that could hinder progress in vulnerable regions like the Pacific and least developed countries.

    The report warns that seas are rising “faster than at any point in recorded history”, with 2024 setting a new record of 5.9 millimetres. This has been driven by human-induced climate change mainly through a process known as thermal expansion – where rising heat causes the ocean to expand – as well as the melting of ice sheets.

    Pacific islands seek backing for new regional fund ahead of COP31

    The report notes that about 1.2 billion people around the world are exposed to coastal flooding, and says some low-lying islands in Vanuatu, the Solomon Islands and Fiji are already facing forced relocations. Globally, rising seas could cost more than $1 trillion every year by 2050, it adds.

    “We cannot stop sea level rise this century but we can determine how much worse it becomes. About half a metre of sea level rise is already locked in in this century because of warming that has already occurred, but beyond that our choices matter enormously,” Hanif told journalists.

    Bill Hare, CEO of think-tank Climate Analytics, said the report was a “wake-up call” to the leaders of high-emitting countries that their failure to cut carbon emissions is “creating major risks for the future alongside the impacts we can already observe around us”.

    Guterres is set to host a high-level meeting on addressing the threat of sea level rise this month during the UN General Assembly, where countries are expected to adopt a declaration that calls for stronger action, expanded access to finance and “ongoing dialogue” to tackle the issue.

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    Loss and damage fund agrees $20m for Nepal but rich nations warn it should not set precedent

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    The board of the UN’s Fund for Responding to Loss and Damage agreed on Thursday to set aside $20 million to help Nepal recover from the devastating climate-driven flood it suffered in August.

    At an extraordinary online meeting, board members unanimously invited Nepal’s government to submit a proposal for how to use the money, which will be considered at a future board meeting.

    The board’s co-chair Camila Minerva Rodriguez described the decision as “truly historic” as it is the first time the new fund has allocated any money since it was set up three years ago. It is expected to approve its first set of projects at its next board meeting in December.

    Maheshwar Dhakal, a senior official at Nepal’s climate ministry, told the meeting the decision was “a powerful expression of humanity, compassion, solidarity and hope” and, for the flood victims, a “recognition of their suffering, respect for their dignity and hope that they are not alone in their darkest hour”.

    A woman carries belongings recovered from her destroyed home following flash floods in Nepal
    A woman carries belongings recovered from her destroyed home following flash floods, on August 29, 2026 in Devighat, Nepal. (Photo: Ezra Acayan/Getty Images)

    While board members were united in approving the $20 million, plus $1.6 million of administrative costs, representatives of developed and developed countries were divided over the extent to which the decision should set a precedent for the fund’s long-term way of operating.

    Germany and Czechia’s board members said it should not set a “precedent” while Japan’s representative said the decision is “truly exceptional” and that the fund’s support must be “in accordance with established rule and procedure”.

    Learning the lessons?

    Responding, Pakistan’s Ali Sheikh said the lessons from the Nepal case should “feed the long-term model and its work on rapid disbursement” of funds.

    He added that he had heard Jan Dusik, Czechia’s board member saying that “we are open for learning but not in setting precedent”. “Please do not define the boundaries for learning,” he emphasised.

    Sheikh complained that the decision approved by the board – the result of negotiations between a group of four developed and four developing-country representatives – was narrower than developing countries had hoped for.

    “We are saying it is a one-time and Nepal-only window, a sentiment against which many developed countries have raised their voice,” he said, adding there had been no time to review the decision.

    Walter Schuldt from Ecuador echoed Sheikh, saying “we should not put limits on lesson learning”. He said the decision, which he was involved in negotiating through “intense exchanges”, tells the fund’s staff to assess the lessons learned.

    The fund is currently in a start-up phase and the board will debate its long-term model – including whether and how to rapidly disburse funds in response to climate-driven disasters – at its next board meeting in the Philippines in December.

    At Thursday’s meeting, several developing-country board members called for wealthy nations to put more money into the fund. Recovery and reconstruction from Nepal’s flood alone is estimated to cost $4.8 billion – in comparison, the fund has only around $350 million to allocate, with a current cap of $20 million per project.

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    Experts: How are climate scientists using artificial intelligence?

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    Artificial intelligence (AI) is developing at a rapid pace and is increasingly being used by scientists to better understand climate change.

    AI is perhaps best-known for its use in “large language models”, such as ChatGPT, Claude and Gemini.

    However, the field is vast.

    From weather forecasting to analysing satellite images, climate scientists are using various types of AI to develop faster and more efficient ways to study the warming planet.

    However, the technology comes with no shortage of risks and challenges, including overreliance on unverified results, intensive energy use and exacerbating existing inequalities in climate science.

    Carbon Brief spoke to 10 experts working across a range of climate-related fields – from developing climate forecasts to analysing changes in the energy grid – about how AI is being used.

    Their answers are set out below, grouped by theme.

    Article Contents

    What are the benefits and challenges of using AI in weather and climate forecasting?

    Dr Doug McNeall, science lead in data-driven climate modelling at the UK Met Office:

    One of the most significant recent developments has been the success of AI weather-prediction models, which learn from large volumes of weather data to predict the next few hours ahead and then repeatedly feed those predictions back into themselves to generate forecasts up to two weeks into the future.

    These models have demonstrated that AI can provide accurate predictions while requiring far less computing power than existing numerical models [which rely on mathematical equations to simulate the climate].

    One of the main challenges is that AI weather-prediction models have been developed for relatively short timescales, where large amounts of observational data [for example, temperature, rainfall or sea ice extent data] is available and model performance can be evaluated quickly and rigorously.

    Climate prediction is fundamentally different. To provide useful climate information, we need to make projections for future climates that lie outside the observational record.

    One promising route forward is, therefore, to use AI to emulate or accelerate these existing models, rather than relying solely on purely data-driven approaches. This blended approach could make climate risk information far more accessible and affordable to produce, while retaining the physical understanding [based on mathematical and scientific principles] that underpins confidence in climate projections.

    Prof William Collins, professor of AI for climate science at the University of East Anglia:

    We’re seeing a really exciting renaissance in both weather and climate science…Machine learning [a subset of AI that uses algorithms to let computers learn from data and make predictions without being explicitly programmed] has had an enormous impact on numerical weather prediction.

    So, for example, the European Center for Mid-Range Weather Forecasts is now deploying an AI forecast system as part of their official communication of weather predictions to the European community, alongside the traditional forecast system. AI systems have become good enough that they’re absolutely competitive with the world’s leading numerical weather prediction…So that’s been quite remarkable.

    Much of machine learning and AI involves learning from data and climate represents a future for which we do not have data. We’re literally trying to predict the future. We don’t have observations of it. So, where does the data come from to inform the models? That is, at the moment, the central challenge that the climate community is attempting to overcome.

    Dr Amirpasha Mozaffari, researcher in Earth artificial intellig