The hot, dry and windy weather preceding the wildfires that tore through Chile and Argentina last month was made around three times more likely due to human-caused climate change.
This is according to a rapid attribution study by the World Weather Attribution (WWA) service.
Devastating wildfires hit multiple parts of South America throughout January.
The fires claimed the lives of 23 people in Chile and displaced thousands of people and destroyed vast areas of native forests and grasslands in both Chile and Argentina.
The authors find that the hot, dry and windy conditions that drove the “high fire danger” are expected to occur once every five years, but that these conditions would have been “rarer” in a world without climate change.
In today’s climate, rainfall intensity during the “fire season” is around 20-25% lower in the areas covered by the study than it would be in a world without human-caused emissions, the study adds.
Study author Prof Friederike Otto, professor of climate science at Imperial College London, told a press briefing:
“We’re confident in saying that the main driver of this increased fire risk is human-caused warming. These trends are projected to continue in the future as long as we continue to burn fossil fuels.”
‘Significant’ damage
The recent wildfires in Chile and Argentina have been “one of the most significant and damaging events in the region”, the report says.
In the lead-up to the fires, both countries were gripped by intense heatwaves and droughts.
The authors analysed two regions – one in central Chile and the other in Argentine Patagonia, along the border between Argentina and Chile.
For example, in Argentina’s northern Patagonian Andes, the last recorded rainfall was in mid-November of 2025, according to the report. It adds that in early January, the region recorded 11 consecutive days of “extreme maximum temperatures”, marking the “second-longest warm spell in the past 65 years”.
Dr Juan Antonio Rivera, a researcher at the Argentine Institute of Snow Science, Glaciology and Environmental Sciences, told a WWA press briefing that these weather conditions dried out vegetation and decreased soil moisture, which meant that the fires “found abundant fuel to continue over time”.
In the northern Patagonian Andes of Argentina, wildfires started on 6 January in Puerto Patriada and spread over two national parks of Los Alerces and Lago Puelo and nearby regions. These fires remained active into the first week of February.
The fires engulfed more than 45,000 hectares of native and planted forest, shrublands and grasslands, including 75% of native forests in the village of Epuyén, notes the study.
At least 47 homes were burned, according to El País. La Nación reported that many families evacuated themselves to prevent any damage.
In south-central Chile, wildfires occurred from 17 to 19 January, affecting the Biobío, Ñuble and Araucanía regions.
They started near Concepción city, the capital of the Biobío region, where maximum temperatures reached 26C. In the nearby city of Chillán, temperatures reached 37C.
From there, the fires spread southwards to the coastal towns of Penco-Lirquen and Punta Parra, in the Biobío region.
The event left 23 people dead, 52,000 people displaced and more than 1,000 homes destroyed in the country, according to the study.
These wildfires burnt more than 40,000 hectares of forests, “tripling the amount of land burned in 2025” across the country, reported La Tercera.
The study adds that more than 20,000 hectares of non-native forest plantations, including Monterey pine and Eucalyptus trees, were consumed by the blaze and critical infrastructure was affected.
A WWA press release points out that the expansion of non-native pines and invasive species “has created highly flammable landscapes in Chile”.
Hot, dry and windy
Wildfires are complex events that are influenced by a wide range of factors, such as atmospheric moisture, wind speed and fuel availability.
To assess the impact of climate change on wildfires, the authors chose a “fire weather” metric called the “hot dry windy index” (HDWI). This combines maximum temperature, relative humidity and wind speed.
While this metric does not include every component that could contribute to intense wildfires, such as land-use change and fuel load data, study author Dr Claire Barnes from Imperial College London told a press briefing that HDWI is “a very good predictor of short-term, extreme, dry, fire-prone conditions”.
The authors chose to analyse two separate regions. The first lies along the coast and the foothills of the Andes around the Ñuble, Biobío and La Araucanía regions in central Chile. The second sits across the Chilean and Argentine border in Patagonia.
These regions are shown on the map below, where red circles indicate the wildfires recorded in January 2026 and pink boxes represent the study areas.
The authors also selected different time periods for the two study regions, to reflect the “different lengths of peak wildfire activity associated with the fires in each region”.
For the central Chilean study area, the authors focus their analysis on the two most severe days of HDWI, 17-18 January. For the Patagonian region, they focus on the most severe five-day period, which took place over 2-6 January.
To put the wildfire into its historical context, the authors analyse data on temperature, wind and rainfall to assess how HDWI over the two regions has changed since the year 1980.
They find that in both study regions, the high HWDI recorded in January is not “particularly extreme” in today’s climate and would typically be expected roughly once every five years. However, they add that the event would have been “rarer” in a world without climate change, in which average global temperatures are 1.3C cooler.
The authors also use a combination of observations and climate models to carry out an “attribution” analysis, comparing the world as it is today to a “counterfactual” world without human-caused climate change.
They find that climate change made the high HDWI three-times more likely in the central Chilean region and 2.5-times more likely in the Patagonian region.
The authors also conduct analysis focused solely on November-January rainfall.
Both study regions experienced “very low rainfall” in the months leading up to the fires, the authors say. They find that fire-season rainfall intensity is around 25% lower in the central Chilean region and 20% lower in the Patagonia region in today’s climate than it would have been in a world without climate change.
Finally, the authors considered the influence of climatic cycles such as the El Niño-Southern Oscillation (ENSO), a naturally occurring phenomenon that affects global temperatures and regional weather patterns.
They find that a combination of La Niña – the “cool” phase of ENSO – combined with another natural cycle called the Southern Annular Mode, led to atmospheric circulation patterns that “favoured the hot and dry conditions that enhanced fire persistence and severity in parts of the region”.
However, they add that this has a comparably small effect on the overall intensity of the wildfires, with climate change standing out as the main driver.
(These findings are yet to be published in a peer-reviewed journal. However, the methods used in the analysis have been published in previous attribution studies.)
Vulnerable communities
The wildfires affected native forests, national parks and small rural and tourist communities in both countries.
A 2025 study conducted in Chile, cited in the WWA analysis, found that 74% of survey respondents did not have appropriate education and awareness on wildfires.
This suggests that insufficient preparedness on early warning signs, response measures and prevention can “exacerbate the severity and frequency of these events”, the WWA authors say.
Aynur Kadihasanoglu, senior urban specialist at the Red Cross Red Crescent Climate Center, said in the WWA press release that many settlements in Chile are close to flammable pine plantations, which “puts lives and livelihoods at risk”.
Additionally, the head of Chile’s National Forest Corporation pointed to “structural shortcomings” in fire prevention, such as lack of regulation in lands without management plans, reported BioBioChile.
In Argentina, the response to the fires has been hampered by large budget cuts and reductions in forest rangers, according to the WWA press release. Experts have criticised Argentina’s self-styled “liberal-libertarian” president Javier Milei for the cuts and the delay to declaring a state of emergency in Patagonia.
According to the Associated Press, “Milei slashed spending on the National Fire Management Service by 80% in 2024 compared to the previous year”. The service “faces another 71% reduction in funds” in its 2026 budget, the newswire adds.
Argentinian native forests and grasslands are experiencing “intense pressure” from wildfires, according to the study. Many vulnerable native animal species, such as the huemul and the pudú, are losing critical habitat, while birds, such as the Patagonian black woodpecker, are losing nesting sites.
The post Climate change made ‘fire weather’ in Chile and Argentina three times more likely appeared first on Carbon Brief.
Climate change made ‘fire weather’ in Chile and Argentina three times more likely
ADELAIDE, Friday 24 JULY — Labor’s National Conference has today committed to support a global moratorium on deep sea mining just days before the International Seabed Authority (ISA) Assembly is due to meet in Kingston, Jamaica, on Monday.
The commitment, agreed under the platform’s third chapter which covers climate and environment, outlines that Labor will “ensure the Australian Government leads ambitious international efforts for global agreements on… a moratorium on deep sea mining in international waters.”
Dr. Susie Byers, Head of Advocacy at Greenpeace Australia Pacific, said from the Conference: “This commitment to support a moratorium on deep sea mining is the strongest from Labor yet and is very welcome. The eyes of the world are now on Australia ahead of the ISA’s Assembly meeting next week, where delegates will discuss the future of deep sea mining and protection of the sea floor.
“Deep sea mining is a destructive new industry that, if allowed to start, will risk irreversible damage to the ocean and communities worldwide who depend on it, with disproportionate impacts on Pacific nations, cultures and economies.
“Labor must not agree to strong action at the Conference today and then stay quiet in front of the world at the ISA come Monday. Australia must hold its nerve or risk letting down the many thousands of Australians who want to see this destructive industry stopped – not to mention our friends, including many of our Pacific family, who want to see the world’s precious deep seas protected from greed and destruction.
“This year, Labor moved to ratify the Global Ocean Treaty, the most significant ocean protection agreement in history. To be true leaders in ocean protection, Australia must now fortify their position with a moratorium on deep sea mining in international waters.”
More than 40 countries, including seven Pacific nations, have called for a moratorium or precautionary pause on deep sea mining.
The Government has not yet announced opposition to deep sea mining, despite it being revealed that former LNP prime minister Scott Morrison and the international weapons industry, with links to AUKUS, were behind a global push to start the practice.
— ENDS —
Labor must follow through on promise to stop deep sea mining
The UK’s new prime minister Andy Burnham remained tight-lipped on his views on climate change during his leadership campaign.
When asked his views on allowing new North Sea drilling in June – a move that the oil-and-gas industry and right-wing media have pushed for in recent months – he said he had “something of an open mind” on the issue.
But a trawl of Burnham’s past comments about climate change, net-zero and fossil fuels reveals a different picture.
Just a year ago in June 2025, Burnham, while mayor of Greater Manchester, gave his support to the fossil fuel treaty – a proposed international pact on phasing out coal, oil and gas – calling it a “lifeline” that “all governments” should join.
In a video message endorsing the treaty, he also said that “there should be no turning away from net-zero”.
During his last bid to be Labour leader in 2015, he used similar language, saying:
“Labour under my leadership will never turn our back on either our duty to tackle climate change or the prospects offered by the green economy.”
Burnham has spoken about the threat of climate change since at least 2008, noting in 2021 that accelerated action could “create thousands of good jobs”, but also warning that net-zero risked becoming the “next Brexit”.
Burnham is yet to appoint his cabinet, but there is much speculation that he will select current net-zero secretary Ed Miliband as his chancellor – with their ally Miatta Fahnbulleh having a “strong chance” of taking Miliband’s former position.
Below, Carbon Brief recounts 28 things that Burnham has said about climate change, net-zero, fossil fuels, energy and transport.
Climate change
“Tackling climate change isn’t just about protecting the planet – it’s a powerful opportunity to build a fairer, greener future for our communities and businesses.”
Calling for local councils to be given more power and money for climate action, 29 November 2025
“There is little doubt that Greater Manchester’s biodiversity has taken a hit over the years, with habitats being lost, destroyed and becoming less diverse due to the impact of development, climate change, pollution and invasive species…We are committed to delivering a city-region for all residents to enjoy – a fairer, greener and more prosperous place for everyone.”
Statement after Greater Manchester declared a “biodiversity emergency”, 25 March 2022
“Over the next decade, if we accelerate our response to the climate crisis, we can create thousands of good jobs, improve homes, overhaul our transport system and make [Manchester] an even better place to live.”
Greater Manchester Green Summit, 18 October 2021
“The environment has never been higher on the national and international agenda.”
Statement after visiting a peat bog restoration project in England, 9 January 2020
“I think climate change [action] will be driven more quickly from the bottom up, if I’m honest. It’s the will of evolution if you wait for the government to act…When governments aren’t listening you get out and get your voice heard…so I think [climate protesters] deserve our encouragement, not our criticism.”
Speaking to Manchester Evening News at a student climate protest in Manchester, 24 May 2019
“Labour under my leadership will never turn our back on either our duty to tackle climate change or the prospects offered by the green economy.”
Labour leadership candidate speech, 15 July 2015
“Climate change can seem a distant, impersonal threat – in fact the associated costs to health are a very real and present danger…We need well-designed climate change policies that drive health benefits.”
Speaking to the Guardian about a study on climate and health, 25 November 2009
“The Stern report on the economics of climate change has changed the debate, in this country and around the world. It made it clear that the people who could suffer most from a failure to tackle climate change, or from a lack of ambition in our approach to it, are those living in the developing countries. They are the most vulnerable…[and] Stern said that the cost of not acting would be large. That is why the government took various measures in the recent spending review to ensure that we are prepared to face the challenges posed by climate change.”
Speaking in the UK parliament on the economic impacts of climate change on his final day as chief secretary to the Treasury, 24 January 2008
Net-zero
“There should be no turning away from net-zero.”
Speaking after giving his support to the fossil fuel treaty – a proposed global pact to introduce laws to phase out coal, oil and gas – on behalf of Manchester, 6 June 2025
“An opportunity is opening up for Britain as other countries move away from net-zero. We should seize that…We can make Britain a green leader. This is not the time to tiptoe, it is the time to commit to this path.”
Speaking at Innovation Zero World Congress in London, 29 April 2025
“[We] need a government that fully buys into the 2038 vision because the UK will not get to 2050 unless places like Greater Manchester are freed up to go faster – and we’re ready to go faster.”
Speaking about Greater Manchester’s aim to reach net-zero by 2038, 19 October 2022
“In Greater Manchester we have plans to build 30,000 net-zero social rented homes because we recognise that a successful city region needs good quality, affordable accommodation for everyone.”
Speech on the future of cities, 24 June 2022
“By building a broad consensus behind the drive to net-zero, we can ensure that the transition is a fair one that delivers social justice as well as climate justice. This is an opportunity for all of us to show how cutting carbon emissions in our cities can make a real difference to our communities – away from the abstractions and rooted in the real world.”
Panel discussion in Glasgow during the COP26 climate summit, 12 November 2021
“To the extent that people have picked up anything from COP26, it’s a sense that the drive to net-zero will mean cost and inconvenience for ordinary people and offsetting for the wealthy and entitled. All of a sudden, you can feel how net-zero could become the new Brexit – a debate that gets very divided on class grounds…This has got to be a wake-up call. We cannot let this happen. We need to act now to build a broad social consensus behind the drive to net-zero. How to do that? It starts with taking control of the climate narrative from those steering it in the wrong direction and turning it around…We must show how, if done in the right way, the drive to net-zero is actually an opportunity to reduce the cost of living; to make people’s lives better and society fairer.”
Writing for the London Standard, 5 November 2021
“The drive to net-zero is a chance to re-industrialise the north of England, this time in a clean way. Create really good jobs, future-facing jobs for people, better public transport, improve people’s homes…If we go quickly towards net-zero, it’s the quickest way to level up the country.”
ITV interview at COP26, 1 November 2021
“If we really embrace the drive to net-zero, that is the route to level up the country…But it needs substantial investment, upfront, now, of the kind that Rachel Reeves, shadow chancellor [and chancellor under Keir Starmer’s government], has been talking about. We need long-term predictable funding.”
Interview with GB News at COP26, 1 November 2021
“I would have preferred to hear slightly less about carbonated wine and much more about a decarbonised economy.”
Referencing a UK budget, which included tax cuts for sparkling wine and other drinks, 28 October 2021
“Decarbonising is not just about lowering costs on to people. It’s the route to get better, cheaper public transport. It’s the route to getting homes that are cheap to run. It’s actually the way we can create thousands of good jobs for the people who live in Greater Manchester. This is the route to levelling up the country by going further and faster on decarbonisation.”
Speaking to Manchester Confidential, 20 October 2021
“[I am] asking people to stop seeing the environmental agenda as a cost and a burden agenda. I think this is a barrier that we’ve got to get over. Already in the media interviews I’ve done today, people are saying ‘can you afford it?’, ‘can it be achievable when times are tough?’.
“My answer to that is, at some point in the 21st century, all homes will be zero-carbon. At some point in this century, all buildings of any kind will be zero-carbon…All cars will be zero-carbon, all public transport will be zero-carbon…The question is: when? And surely the places that embrace those things first are putting themselves in a position of economic strength when it comes to facing up to the future. Rather than seeing the whole agenda as a burden, we’ve got to see it for the benefits that it can bring.
“There may be a greater upfront cost in a zero-carbon home, but let’s stop thinking, as we tend to do in Britain, of the short-term, the short-termist approach to life. Surely let’s start talking to the public about the lifetime cost.”
Greater Manchester Green Summit, 21 March 2018
Fossil fuels
“I’ve got something of an open mind, you know. I don’t have a sort of fixed position.”
Speaking on the issue of new North Sea oil and gas in a New Statesman interview, 3 June 2026
“We would fight this in GM [Greater Manchester]…Communities across the north would face all the danger and disruption while big oil and gas walk away with all the profits.”
In response to Reform’s call for fracking, on X, 25 August 2025
“I am proud to endorse the fossil-fuel treaty proposal today on behalf of Greater Manchester. It’s not just a plan – it’s a lifeline. It’s a call to end coal, oil and gas, hold polluters accountable…I urge all governments, nationals and subnationals to join this fight.”
Statement upon endorsing the fossil-fuel treaty, 5 June 2025
“Fracking is the past, it is not the future.”
Speech at London climate protest, 20 September 2019
“I have called for a moratorium on fracking. Far too many potential risks and unanswered questions.”
On X, 22 June 2015
Energy and transport
“What I would do, if successful, is lay out a plan for more public control over water, energy, transport, so that over the period we can get those bills down, fares down, and give people and give businesses breathing space.”
LBC interview, 2 July 2026
“I am all in favour of tough decisions at a national level. I don’t believe there should be a third runway at Heathrow, for instance. But I think those are decisions for national government.”
Guardian interview, 13 June 2019
“There is a debate to be had about aviation, isn’t there? There are changing public attitudes about aviation. Rather than just saying no to people flying, don’t we need to accelerate research into low and zero-carbon forms of aviation?”
Guardian interview, 13 June 2019
“Today, I stand alongside the mayors of some of the greatest cities in the world. I’m committed to a cleaner, greener and healthier future for Greater Manchester. Around a third of greenhouse gas emissions in our city-region come from transport.”
When signing the C40 Fossil-Fuel-Free Streets Declaration, which includes support for zero-emissions vehicles and walking and cycling, on behalf of Manchester, 14 September 2018
This article was updated on 20 July to reflect Burnham replacing Keir Starmer as UK prime minister.
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The post 28 quotes from new UK leader Andy Burnham on climate, net-zero and fossil fuels appeared first on Carbon Brief.
28 quotes from new UK leader Andy Burnham on climate, net-zero and fossil fuels
Climate Change
Greenpeace welcomes dismissal of Woodside’s anti-democratic “SLAPP suit” against climate campaigners
SYDNEY, Thursday 23 July 2026 — Greenpeace Australia Pacific has welcomed news that a ‘fishing expedition’ brought by Woodside in connection with a 2023 climate protest has been dismissed in full, celebrating it as a win for the community in their ongoing fight to stop Woodside from drilling for oil and gas at Scott Reef.
The Supreme Court of Western Australia today threw out Woodside’s case, finding it had not succeeded in establishing it might have a cause of action against an unknown party involved in a three-year-old protest to bring attention to the harmful effects of Woodside’s gas expansion on climate and cultural heritage.
It comes as public opposition to Woodside’s plans to drill over 50 gas wells at Scott Reef continues to mount.
David Ritter, CEO at Greenpeace Australia Pacific, said: “Greenpeace welcomes the news that this case has been dismissed. Woodside’s use of a SLAPP* suit of this kind is a grotesque attempt to use legal tactics to silence people. There should be no place for SLAPP suits in Australian democracy.
“Community opposition to Woodside’s dangerous plans to drill over 50 gas wells at Scott Reef is large and growing.
“Woodside’s plan to drill for gas at Scott Reef is breaking hearts in the Australian community. Their plan to drill for gas at the pristine, magnificent Scott Reef, risking precious marine wildlife like turtles and whales, oceans and the climate, is a disaster waiting to happen, and one that over half a million Australians are calling on the WA and Federal governments to stop.”
-ENDS-
Notes for editor
A petition calling on the federal and WA governments to save Scott Reef has more than 552,000 signatures.
*SLAPP stands for “Strategic Lawsuit Against Public Participation”. It is a legal tactic used by powerful corporations, particularly within the fossil fuel industry, to censor, intimidate, and silence critics by burdening them with the high costs of a legal defense until they abandon their environmental advocacy or protests.
Media contact
Lucy Keller on +61 491 135 308 or lucy.keller@greenpeace.org
Kimberley Bernard on +61 407 581 404 or kbenard@greenpeace.org
Greenpeace welcomes dismissal of Woodside’s anti-democratic “SLAPP suit” against climate campaigners
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