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The northernmost town in the world, Ny-Ålesund, has for more than 30 years hosted the UK’s Arctic Research Station – the nation’s only permanent infrastructure at the Earth’s northern pole.

Located on the Norwegian island of Svalbard – one of the most rapidly warming regions on Earth – the station acts as a base for UK scientists studying the Arctic’s ice, ecosystems and atmosphere.

On 7 February, Carbon Brief was invited to the British Antarctic Survey (BAS), the UK’s national polar research institute in Cambridge, to hear more about what life is like for UK scientists living in the Arctic Circle.

BAS’s Arctic Day also offered a chance to hear about how researchers are working to understand the complex impacts of climate change on the land’s most northern edge.

UK Arctic base

Formerly a mining town, Ny-Ålesund now hosts Arctic research stations for a range of countries including China, France, Germany, India, Italy, the Netherlands, Norway and the UK.

It is accessible via a flight on a 14-seater plane that leaves four times a week from Longyearbyen, the largest town in Svalbard.

Speaking at BAS’s Arctic Day, the institute’s Arctic operations manager Iain Rudkin explained that the town is famous for being the starting point for a number of “crazy” Arctic expeditions. 

This includes the expeditions of Roald Amundsen, the Norwegian explorer who was the first man to successfully navigate the treacherous Northwest Passage through the Arctic to North America by boat in 1905.

The town of Ny-Ålesund, featuring the UK’s Arctic Research Station. Credit: British Antarctic Survey
The town of Ny-Ålesund, featuring the UK’s Arctic Research Station. Credit: British Antarctic Survey

The UK’s Arctic Research Station was built in 1991. It consists of seven bedrooms, three laboratories, a sitting room, an office and storage space. The station can be explored room by room using this 3D virtual tour tool.

According to station lab manager Guy Hillyard, the labs consist of a general space, a microscopic lab and a wet lab suitable for processing dirty soils and sediments.

The station also has an annex for drying mosses and soils, freezers at temperatures from -18 to -25C for storing ice cores and separate freezers for storing frozen sediment, he added.

The UK’s Arctic Research Station in Ny-Ålesund viewed in summer.
The UK’s Arctic Research Station in Ny-Ålesund viewed in summer. Credit: British Antarctic Survey

Until recently, Ny-Ålesund was a town of “radio silence”, meaning there was no wifi, bluetooth or other kinds of internet access. However, last year, a decision was made to install a 4G mast.

Although many living at Ny-Ålesund appreciated the radio silence, the decision was made to make it easier for people out in the field to call for help if in danger and to allow scientists to use scientific equipment that communicates via the internet, Rudkin said.

Algae, AI and invisible ecosystems

BAS’s Arctic Day saw a number of UK-based scientists briefly explain the purposes of their research at Ny-Ålesund in the past and coming few months.

Dr Jaz Millar, a postdoctoral researcher at the University of Bristol, travelled to Ny-Ålesund in July 2023 as part of their research into how climate change could be affecting algal blooms on glaciers, which are vast rivers of frozen ice.

The algae that Millar studies is dark purple, meaning it lowers the “albedo” on the surface of glaciers. Albedo is a term for describing the proportion of sunlight that is reflected away from a surface, with bright white having a high albedo and dark colours having a low albedo.

When the albedo on the glacier’s surface is lowered, it absorbs more sunlight. This causes it to melt faster.

It is possible that presence of meltwater induces the growth of more algae – potentially representing a self-reinforcing “worrying positive feedback loop”, Millar explained.

Around Ny-Ålesund, Millar’s team visited three glaciers. They studied algal growth with a range of techniques, including bringing microscopes directly into their field sites and taking ice samples.

Millar’s research has not yet been published, but the results suggest that the relationship between glacier melt and algal bloom growth may be more complex than just a linear positive feedback loop.

Elsewhere, Prof Kate Hendry, a chemical oceanographer at BAS, explained more about her research into how the melting of glaciers could be altering the flow of key nutrients into coastal waters – eventually impacting marine ecosystems.

She explained that glacier meltwater typically contains nutrients that are needed by diatoms – single-cell algae that act as food for tiny marine creatures called zooplankton – which in turn support a wide range of fish, bird and mammal species, including whales. These nutrients include iron nitrate and silicic acid.

Humpback whale, Svalbard, Norway.
Humpback whale, Svalbard, Norway. Credit: Photo 12/Alamy Stock Photo

As glaciers melt at an increasingly rapid rate because of climate change, this may impact the growth of diatoms – in turn affecting species higher up the food chain, she said.

To study this, Hendry’s team visited Ny-Ålesund in 2023 to collect more than 1,000 samples from glaciers, the ocean and sediments. Her team will return this year to look further at how the availability of iron and silicon in fjord environments could be affected by climate change.

At the sidelines of the presentations, Carbon Brief spoke to Martin Rogers, a machine-learning scientist at BAS, about his research using AI to map changes to Arctic sea ice in higher resolution than is currently available.

The AI tool can search through different types of satellite imagery, offering scientists the highest-resolution image available when considering factors such as cloud cover, which can obscure views of the sea ice, he explained.

In the future, this tool could be used to help scientists understand in greater detail the extent to which sea ice is declining because of climate change, he added:

“The big question is about the decline in sea ice extent. With this product, you can get the sea ice extent in high fidelity. Then you’ve got more precise information about how the sea ice extent is changing between years.”

Finally, the conference heard from Laura Molares Moncayo, a PhD student at the Natural History Museum and Queen Mary University of London.

Her research is centred around the question of whether the Arctic’s atmosphere could be supporting an ecosystem that is invisible to the human eye.

For decades, researchers assumed that glaciers were devoid of complex lifeforms, she explained. However, research has revealed that they actually support a vast array of microorganisms, which are well adapted for harsh, frozen environments.

How did these microorganisms find their way into glaciers?

Glaciers grow by receiving rain and snow from the atmosphere. In fact, glaciers could be considered a “condensed version of the atmosphere”, Molares Moncayo explained.

It is possible, she continued, that the microorganisms found in glaciers may have fallen from the atmosphere. Such microorganisms would, in theory, already possess the adaptations required to survive the tough conditions of the Arctic air.

PhD student Laura Molares Moncayo shows the locations of her field research around Ny-Ålesund. Credit: Daisy Dunne
PhD student Laura Molares Moncayo shows the locations of her field research around Ny-Ålesund. Credit: Daisy Dunne

In a week’s time, she will travel to Ny-Ålesund to try to establish whether the Arctic atmosphere is home to an invisible ecosystem of microorganisms.

To do this, she will use a range of equipment, including dry air samplers, which collect any solid particles present in air into a filter.

She will then use DNA sequencing techniques to identify which microorganisms are present in her air samples. She will also study the microorganisms’ functional genes, which will offer clues into whether the microorganisms are interacting with each other when still in the air.

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Media reaction: The 2025 Texas floods and the role of climate change

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At least 120 people have died after a devastating flash flood swept through homes and holiday camps in central Texas in the early hours of 4 July.

The disaster unfolded after a severe rainstorm caused the Guadalupe River to swell to its second-greatest height on record.

Headlines have been dominated by the death of 27 children and counsellors from a summer camp for girls near the banks of the river.

In the aftermath of the flooding, many news outlets questioned whether the Trump administration’s decision to cut staff from the federal climate, weather and disaster response services may have impacted the emergency response to the disaster.

However, others defended the agency’s actions, saying that the appropriate warnings had been issued.

Scientists have been quick to point out the role of climate change in driving more intense rainfall events.

A rapid attribution analysis found “natural variability alone” could not explain the extreme rainfall observed during the “very exceptional meteorological event”.

Meanwhile, social media has also been awash with misinformation, including claims that the floods were caused by geoengineering – an argument that was quickly dismissed by officials.

In this article, Carbon Brief unpacks how the flood unfolded, the potential role of climate change and whether advanced warnings were affected by funding cuts to key agencies.

How did the flooding develop?

The flash flooding began in the early hours of the morning on Friday 4 July, with early news coverage focusing on Guadalupe River in Kerr County.

According to BBC News, the US National Weather Service (NWS) reported a “swathe of around 5-10 inches (125-250mm) of rainfall in just three to six hours across south-central Kerr County”, equivalent to “around four months of rain [falling] in a matter of hours”.

The slow-moving weather system was fed by moisture from the remnants of Tropical Storm Barry, which had brought flooding to Mexico, before tracking north as it died out, the outlet explained.

Kerr County is a “hillier part of Texas than surrounding counties”, meaning that “moisture-laden air was forced upwards, building huge storm clouds”, the article noted:

“These storm clouds were so large they effectively became their own weather system, producing huge amounts of rain over a large area.”

Credit: Texas Water Development Board
Credit: Texas Water Development Board

Prof Hatin Sharif, a hydrologist and civil engineer at the University of Texas at San Antonio, explained in an article for the Conversation why Kerr County is part of an area known as “flash flood alley”:

“The hills are steep and the water moves quickly when it floods. This is a semi-arid area with soils that don’t soak up much water, so the water sheets off quickly and the shallow creeks can rise fast.”

He added that Texas as a whole “leads the nation in flood deaths” – by a “wide margin”.

As the rain lashed down, the “destructive, fast-moving waters” of Guadalupe River rose by 8 metres in just 45 minutes before daybreak on Friday, said the Associated Press, “washing away homes and vehicles”.

The Washington Post reported that the river reached its “second-greatest height on record…and higher than levels reached when floodwaters rose in 1987”. It added that “at least 1.8tn gallons of rain” fell over the region on Friday morning.

NWS Austin/San Antonio on X: A swath of 5 -10" of rainfall has been estimated the last 3-6 hours across south-central Kerr County

The floodwaters swept through camps, resorts and motorhome parks along the banks of Guadalupe River for the Fourth of July weekend.

A timeline of events by NPR reported that “boats and other equipment that was pre-positioned started responding immediately”.

The article quotes Texas lieutenant governor Dan Patrick, who said there were 14 helicopters, 12 drones and nine rescue teams in action – as well as “swimmers in the water rescuing adults and children out of trees”. He added that there were 400 to 500 people on the ground helping with the rescue effort.

By Saturday 5 July, more than 1,000 local, state and federal personnel were on the ground helping with the rescue operation, NPR said.

In the days that followed, further periods of heavy rainfall meant that flood watches remained in place for much of the weekend, said Bloomberg.

NWS Austin/San Antonio on X: The Flood Watch has been extended through 7 PM

Newspapers and online outlets were filled with images from the area. For example, the Sunday Times carried photos and video footage of the floods, while BBC News had drone footage of the “catastrophic flooding”.

Aerial view of the Guadalupe River flooding the surrounding area near Kerville, Texas on 5 July 2025.
Aerial view of the Guadalupe River flooding the surrounding area near Kerville, Texas on 5 July 2025. Credit: PO3 Cheyenne Basurto / U.S. Coast Guard Photo / Alamy Stock Photo

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What impact did the flooding have?

The floods have killed at least 119 people, according to the latest count reports by the Guardian:

“In Kerr county, the area that was worst affected by last Friday’s flood, officials said on Wednesday morning that 95 people had died. The other 24 people who have died are from surrounding areas. The Kerr county sheriff said 59 adults and 36 children had died, with 27 bodies still unidentified.”

There are also 173 people believed to still be missing, the Guardian said, including 161 from Kerr County specifically.

Bloomberg noted that “some of the victims came from additional storms around the state capital Austin on 5 July”. It added that, according to officials, “no one had been found alive since 4 July, when the deluge arrived in the pre-dawn hours”.

BBC News reported that continuing rains following the initial flood “hamper[ed] rescue teams who are already facing venomous snakes as they sift through mud and debris”.

Headlines have been dominated by the death of 27 children and counsellors from Camp Mystic – a 700-acre summer camp for girls, which has been running for almost 100 years, noted the Guardian.

BBC News reported that “many of the hundreds of girls at the camp were sleeping in low-lying cabins less than 500ft (150 metres) from the riverbank”.

Lieutenant governor Patrick “told of one heroic camp counsellor who smashed a window so girls in their pyjamas could swim out through neck-high water”, the outlet reported. He added that “these little girls, they swam for about 10 or 15 minutes” before reaching safety.

The Associated Press reported:

“Dozens of families shared in local Facebook groups that they received devastating phone calls from safety officials informing them that their daughters had not yet been located among the washed-away camp cabins and downed trees. Camp Mystic said in an email to parents of the roughly 750 campers that if they have not been contacted directly, their child is accounted for.”

The New York Times published images and videos of the aftermath at the summer camp.

Visiting the site on Sunday 6 July, Texas governor Greg Abbott tweeted that the camp was “horrendously ravaged in ways unlike I’ve seen in any natural disaster”.

Greg Abbott on X: Today I visited Camp Mystic.

In the immediate aftermath of the floods, US president Donald Trump, at his golf club in Bedminster in New Jersey, signed a major disaster declaration that freed up resources for the state, reported France24.

A preliminary estimate by the private weather service AccuWeather put the damage and economic loss at $18bn-$22bn (£13.2bn-£16.2bn), the Guardian reported.

Former president Barack Obama described the events as “absolutely heartbreaking”, reported the Hill. In a statement, former president George W Bush and his wife Laura – who was once a counselor at the camp – said that they “are heartbroken by the loss of life and the agony so many are feeling”, another Hill article reported.

American-born pontiff Pope Leo XIV also “voiced his sympathies”, reported another Guardian article. Speaking at the Vatican, he said:

“I would like to express sincere condolences to all the families who have lost loved ones, in particular their daughters who were in a summer camp in the disaster caused by flooding of the Guadalupe River in Texas.”

Rescue workers search for missing people near Camp Mystic on 6 July 2025.
Rescue workers search for missing people near Camp Mystic on 6 July 2025. Credit: Julio Cortez / Alamy Stock Photo

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What role did climate change play?

As the planet warms, extreme rainfall events are becoming more intense in many parts of the world.

This is principally because, according to the Clausius-Clapeyron (C-C) equation, the air is able to hold 7% more moisture for every 1C that the atmosphere warms, which means warmer air can release more liquid water when it rains.

For example, a recent study of the US found that the frequency of heavy rainfall at “durations from hourly to daily increased in 1949-2020”. It added that this was “likely inconsistent with natural climate variability”.

In addition, research indicates that, in some parts of the world, increases in the intensity of extreme rainfall over 1-3 hours are “stronger” than would be expected from the C-C scaling.

However, many other factors – such as local weather patterns and land use – affect whether extreme rainfall leads to flooding.

Local meteorologist Cary Burgess told Newsweek that “this part of the Texas Hill Country is very prone to flash flooding because of the rugged terrain and rocky landscape”. For example, the outlet notes, 10 teenagers died in flash floods in July 1987.

In the aftermath of the flooding in Texas, Dr Daniel Swain, a climate scientist at the University of California Agriculture and Natural Resources, told ABC News that there is “abundant evidence” that “highly extreme rain events” have “already increased considerably around the world as a result of the warming that’s already occurred”.

Prof Andrew Dessler from Texas A&M University wrote on climate science newsletter The Climate Brink that “more water in the air flowing into the storm will lead to more intense rainfall”. He added:

“The role of climate change is like steroids for the weather – it injects an extra dose of intensity into existing weather patterns.”

Dr Jennifer Francis, a climate scientist at the Woodwell Climate Research Center, told Bloomberg that Texas is “particularly flood-prone because the fever-hot Gulf of Mexico is right next door, providing plenty of tropical moisture to fuel storms when they come along”.

Many outlets pointed out the higher-than-average sea surface temperatures in the Gulf of Mexico. BBC News said:

“Sea surface temperatures in the Gulf of Mexico, where some of the air originated from, continue to be warmer than normal. Warmer waters mean more evaporation and so more available moisture in the atmosphere to feed a storm.”

Yale Climate Connections reported that sea surface temperatures were up to 1C above average in the central Gulf of Mexico. It said that human-caused climate change made these conditions up to 10 times more likely, according to the Climate Shift Index from Climate Central.

(This index gives the ratio of how common the temperature is in today’s climate, compared to how likely it would be in a world without climate change.)

Bloomberg was among a number of outlets to note that, in the run-up to the flooding, nearly 90% of Kerr County was experiencing “extreme” or “exceptional” drought. This meant the soil was hard and less able to soak in water when the intense rainfall arrived.

Just days after the event, rapid attribution group ClimaMeter published an analysis of the meteorological conditions that led to the flooding.

It stated that “conditions similar to those of the July 2025 Texas floods are becoming more favorable for extreme precipitation, in line with what would be expected under continued global warming”.

According to the analysis, the flooding was a “very exceptional meteorological event”. It explained that “meteorological conditions” similar to those that caused the floods are “up to 2 mm/day (up to 7%) wetter in the present than they have been in the past”. It added:

“Natural variability alone cannot explain the changes in precipitation associated with this very exceptional meteorological condition.”

ClimaMeter on Bluesky: the July 2025 Texas floods were up to 2 mm/day wetter

The field of extreme weather attribution aims to find the “fingerprint” of climate change in extreme events such as floods, droughts and heatwaves.

ClimaMeter focuses on the atmospheric circulation patterns that cause an extreme event – for example, a low-pressure system in a particular region. Once an event is defined, the scientists search the historical record to find events with similar circulation patterns to calculate how the intensity of the events has changed over time.

The study authors warned that they have “low confidence in the robustness” of their conclusions for this study, because the event is “very exceptional in the data record”, so they do not have many past events to compare it to.

In its coverage of the attribution study, the Wall Street Journal highlighted some of the research’s limitations. It said:

“Remnant moisture from Tropical Storm Barry stalled over the region and repeatedly fed rainfall, making it hard to compare the weather pattern to historical data.”

The outlet quoted one of the study’s co-authors, Dr Davide Faranda, a scientist at France’s National Centre for Scientific Research, who said the data “nonetheless suggests that climate change played a role”.

Many other climate scientists have also linked the flooding to climate change.

For example, Dr Leslie Mabon, a senior lecturer in environmental systems at the Open University, told the Science Media Centre:

“The Texas floods point to two issues. One is that there’s no such thing as a natural disaster – and one area that disaster experts will be probing is what warnings were given and when. The second is that the pace and scale of climate change means extreme events can and do exceed what our infrastructure and built environment is able to cope with.”

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Were the forecasts and warnings affected by recent job cuts?

Observers were quick to question how the response to the floods has been impacted by recent sweeping cuts to federal climate, weather and disaster response services by the Trump administration.

BBC News explained how staffing cuts overseen by the so-called Department of Government Efficiency – the initiative formerly led by Elon Musk – have reduced the workforce National Weather Service (NWS).

The news outlet reported that – since the start of the year – “most” probationary employees had their contracts terminated, 200 employees have taken voluntary redundancy, 300 opted for early retirement and 100 were “ultimately fired”.

(The Trump administration has also proposed a 25% cut to the budget of the National Oceanic and Atmospheric Administration (NOAA) – the agency which oversees the NWS – but this would not come into force until the 2026 financial year.)

The Independent was among a raft of publications to report the weather service had predicted 1-3 inches (2.5-7.6cm) of rain for the region – significantly less than the 10-15 inches (25-38cm) that ultimately fell.

CNN detailed how the first “life-threatening flash flooding warning” for parts of Kerr County – which would have triggered alerts to mobile phones in the area – was issued just past 1am on Friday morning by the NWS. This was 12 hours after the first flash flood warning and followed “several technical forecasts” issued on Thursday afternoon and evening with “increasingly heightened language”, it said.

Other publications focused on staffing shortages at local branches of the weather service. The New York Times and Guardian were among the outlets who reported that “key staff members” had been missing at the two Texas NWS offices involved in forecasting and warning for the affected region. This included a “warning coordination” officer.

Writing on social media platform BlueSky, Dr Daniel Swain – the climate scientist from the University of California Agriculture and Natural Resources – said claims that the weather service “did not foresee” the floods were “simply not true”. He stated:

“This truly was a sudden and massive event and occurred at [the] worst possible time (middle of the night). But [the] problem, once again, was not a bad weather prediction: it was one of “last mile” forecast/warning dissemination.

“I am not aware of the details surrounding staffing levels at the local NWS offices involved, nor how that might have played into [the] timing/sequence of warnings involved. But I do know that locations that flooded catastrophically had at least 1-2+ hours of direct warning from NWS.”

Daniel Swain on Bluesky: There have been claims that NOAA/NWS did not foresee catastrophic TX floods

Rick Spinrad, who led NOAA over 2021-25, speculated that the communication problems could have been caused by staffing shortages. He told the Hill:

“I do think the cuts are contributing to the inability of emergency managers to respond…The weather service did a really good job, actually, in getting watches and warnings and…wireless emergency alerts out.

“It is really a little early to give a specific analysis of where things might have broken down, but from what I’ve seen, it seems like the communications breakdown in the last mile is where most of the problem was.”

The Trump administration, meanwhile, was quick to push back on the suggestion that budget and job cuts to climate and weather services had aggravated the situation.

In an official statement provided to Axios, a White House spokesperson said criticisms of the NWS and funding cut accusations were “shameful and disgusting”. It added:

“False claims about the NWS have been repeatedly debunked by meteorologists, experts and other public reporting. The NWS did their job, even issuing a flood watch more than 12 hours in advance.”

Meanwhile, when a reporter asked Trump whether the administration would investigate whether recent cuts had led to “key” vacancies at the NWS, he responded that “they did not”.

Asked if he thought federal meteorologists should be rehired, Trump said:

“I would think not. This was the thing that happened in seconds. Nobody expected it. Nobody saw it.”

Media outlets highlighted how the disaster put a spotlight on the risks of forthcoming federal cuts to NOAA and the government’s plans to dismantle the Federal Emergency Management Agency (FEMA).

The Guardian reported on warnings that such floods could become the “new normal” as “Trump and his allies dismantle crucial federal agencies that help states prepare and respond to extreme weather and other hazards”.

Dr Samantha Montano, professor of emergency management at Massachusetts Maritime Academy, told the outlet.

“This is what happens when you let climate change run unabated and break apart the emergency management system – without investing in that system at the local and state level.”

CBS News reported about how, in 2017, Kerr County officials rejected proposals to install an outdoor warning system for floods on the grounds of cost. The outlet noted that neighbouring counties Guadalupe and Comal both have flood sirens in place.

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What conspiracy theories have been circulating?

As with many other natural disasters, the floods have been followed by a wave of fast-spreading online misinformation.

One of the most popular theories to have taken hold is that the floods were caused by cloud seeding – a form of geoengineering where substances are purposefully introduced into the clouds to enhance rainfall.

In a pair of Twitter posts, each viewed by several million people, one account claimed the state of Texas was “running seven massive cloud seeding programs” and asked: “Did they push the clouds too far and trigger this flood?”

It also linked the floods and cloud seeding operations conducted by Rainmaker Technology Corporation, a weather modification start-up partly funded by US billionaire Peter Thiel.

Rainmaker Technology Corporation CEO Augustus Doricko found himself in the eye of the social media storm, as social media users pointed to his organisation’s links to Thiel and shared a photo of the businessman with former US president Bill Clinton.

The cloud seeding theory received a major boost when it was promoted by Mike Flynn, Donald Trump’s former national security advisor and one of the “most integral figures in the QAnon movement”, according to the Guardian.

General Mike Flynn on X: Anyone able to answer this

The weather modification theory was picked up by existing and prospective Republican politicians.

The Daily Beast reported how Kandiss Taylor – a Republican congressional candidate in Georgia – blamed the event on “fake weather” in a string of tweets. She wrote: “This isn’t just ‘climate change.’ It’s cloud seeding, geoengineering, & manipulation.”

Meanwhile, sitting Georgia congresswoman Marjorie Taylor Greene announced on Twitter that she had introduced a bill that “prohibits the injection, release, or dispersion of chemicals or substances into the atmosphere for the express purpose of altering weather, temperature, climate, or sunlight intensity”.

(This is not Taylor Greene’s first foray into weather manipulation conspiracies. In 2021, she postulated that Jewish bankers had started deadly fires in California in 2018 by firing a laser from space in order to benefit themselves financially.)

Meteorologists were quick to debunk the claims around cloud seeding. In a Facebook post, chief meteorologist for Texas news station ABC13 wrote:

“Cloud seeding cannot create a storm of this magnitude or size. In fact, cloud seeding cannot even create a single cloud. All it can do is take an existing cloud and enhance the rainfall by up to 20%.”

At a press conference on Monday, Texas senator Ted Cruz said there was “zero evidence of anything like weather modification”. He added:

“The internet can be a strange place. People can come up with all sorts of crazy theories.”

Theories about geoengineering were not the only form of misinformation to swirl online in the wake of the disaster.

Snopes reported how local outlet Kerr County Lead pulled a story about two girls rescued 30 metres up a tree two days after the flood event after the account was found to be false.

The story, which cited “sources on the ground”, was circulated widely on Twitter and replicated by other news outlets, including the Daily Mirror and Manchester Evening News in the UK. Both outlets subsequently deleted the articles.

In a retraction statement, the editor of Kerr County Lead said the story was a “classic tale of misinformation that consumes all of us during a natural disaster”. 

Another widely-circulated story – debunked by Snopes – claimed that musician Eric Clapton would pay funeral expenses for the families of those killed.

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How has the media responded?

The scale of flooding and the resulting death toll have prompted many news outlets to ask whether more could have been done to avoid the tragedy.

Newspapers in Texas highlighted perceived failures by local, state and federal authorities.

“Flash floods happen frequently enough in the Hill Country that many Texans rightly wonder whether at least some of the devastation and death…could have been prevented,” the Dallas Morning News said. “Answers must follow,” agreed the Austin American-Statesman.

An editorial in the San Antonio Express-News said there would likely be “plenty of finger-pointing”, arguing that “people will try to push narratives that serve political and personal agendas”. It added:

“The truth may reveal inevitability, failure or something in between.”

An editorial in the Houston Chronicle criticised “misguided decisions” by Trump to cut support for the “federal agencies that keep us safe from storms”. It stated:

“What will protect Texans is a fully staffed, fully supported weather service – with the scientists and infrastructure in place to warn us in time.”

While none of these Texan newspaper editorials pointed to a potential role for climate change in exacerbating the extreme rainfall, some of their wider reporting on the disaster did.

Other US news outlets, such as the New York Times, the Los Angeles Times and the Washington Post emphasised this link in their coverage.

“We hope this tragedy will lead to renewed support for the systems we’ve devised over the years to help prepare for and respond to natural disasters,” Louisiana’s New Orleans Advocate stated in an editorial, adding that “we all are vulnerable to increasingly extreme weather events caused by climate change”.

In Pennsylvania, a Patriot-News editorial said that, following the floods, “government officials at all levels need to accept the reality of climate change. Too many do not.”

Writing in his news outlet, Bloomberg, businessman and former Democratic presidential nominee Michael Bloomberg made a direct link between the “climate denialism” of the Trump administration and the disaster in Texas.

The New York Times has an opinion piece on the floods by MaryAnn Tierney, former regional administrator at the FEMA. Besides making a clear link to climate change, Tierney stated that:

“The uncomfortable truth is this: With each passing day, the federal government is becoming less prepared to face the next big disaster.”

More overtly right-leaning and Trump-supporting media outlets in the US took aim at “left-wing critics” for linking the event to climate change and Trump administration cuts.

An article in Fox News, which has broadcast discussions of flood-related conspiracy theories, criticised “liberals” for “politicising the disastrous flooding”.

An editorial in the New York Post is headlined: “Lefty responses to the Texas flooding horror are demented and depraved.” It argued that Democrats had “wrongly suggest[ed] that Team Trump slowed the disaster response”.

Diana Furchtgott-Roth, from the climate-sceptic Heritage Foundation, wrote in the UK’s Daily Telegraph that Democrats were trying to “politicise mother nature” by linking weather-service cuts to the deaths in Texas.

Meanwhile, Guardian columnist Rebecca Solnit urged caution in definitively linking the floods to any specific political issue amid “the information onslaughts of this moment”. She concluded that “both the weather and the news require vigilance.”

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Media reaction: The 2025 Texas floods and the role of climate change

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China Briefing 10 July 2025: New sector targets; Overcapacity dressing-down; Adaptation scorecard   

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Welcome to Carbon Brief’s China Briefing.

China Briefing handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here.

Key developments

New sector targets in renewable portfolio standard

NEW QUOTAS: China has published the 2025-2026 provincial quotas for renewable energy consumption, which for the first time included sectoral targets for  iron and steel, cement, polysilicon and certain types of data centres, industry news outlet BJX News reported, as well as updates to the aluminium sector targets established last year. Bloomberg said that the steel, cement and polysilicon sectors will need to use low-carbon energy to “meet between 25% and 70% of their demand” under the policy. Energy news outlet International Energy Net noted that Sichuan, Yunnan and Qinghai provinces faced the “highest quotas”, at 70%. (For comparison, the average provincial quota is 38%, Carbon Brief calculated. A separate quota for these three provinces that does not include hydropower is much closer to the national average.)

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POWER RUSH: In contrast to expectations that renewable installations in China would slow for the rest of 2025, the state-run thinktank State Grid Energy Research Institute estimated that 380 gigawatts (GW) of solar, 140GW of wind power and 120GW of thermal power (likely mostly coal) will be added this year, Bloomberg reported. It noted that the solar figure is “more than 50% higher than forecasts from the leading solar industrial group”. According to NEA data, the estimate implies China will add 182GW in solar, 94GW in wind and 102GW in thermal power between June and December.

MANAGING THE INCREASE: Li Chao, spokesperson for the National Development and Reform Commission (NDRC), told reporters that “large-scale xiaona (消纳) consumption of renewable energy is critical” given rapid capacity growth, according to industry outlet China Energy News, adding that consumption rates continue to exceed 90% – meaning no more than 10% of potential output is being wasted, according to government calculations. However, separate outlet China Energy Net reported that wind and solar utilisation rates (利用率) in some provinces fell below the government-set red line of 90%, due to rapid growth. Dr Muyi Yang, senior energy analyst for Asia at thinktank Ember, told Carbon Brief: “The recent dip in utilisation rates in the western regions is an early warning that [investment in the grid] needs to speed up.”

OPEN ARMS?: Coal power still has “room to grow” during the fifteenth five-year plan period (2026-2030) despite market challenges, China Electricity Council chief expert Chen Zongfa told BJX News. Chen said this was due to the changing “attitude of the government”, which “no longer demonises coal”. The influential State-owned Assets Supervision and Administration Commission of the State Council (SASAC) pledged to “speed up the construction of thermal power projects” and “ensure the safe and stable supply of coal”, according to China Energy News. Another China Energy News article quoted an NDRC official saying China needed to “ensure the stability of coal supply”. Meanwhile, in a visit to Shanxi, President Xi Jinping told local policymakers to transform the coal industry “from low-end to high-end” while also developing clean-energy, Xinhua said.

Floods and heatwaves

‘INTENSE’ RAINS: Several regions in China, including the southern Henan, Guizhou and Hubei provinces, were hit by “intense rainfall” throughout late June and early July, causing “severe flooding” and several deaths, Bloomberg reported, in an article noting that climate change is “fuelling” extreme weather events. Meanwhile, high temperatures “enveloped China’s eastern seaboard…raising fears of droughts and economic losses”, Reuters said, adding that “extreme heat, which meteorologists link to climate change, has emerged as a major challenge for Chinese policymakers”.

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NEW WARNINGS: At the launch of the China Blue Book on Climate Change 2025 – a document outlining global and China-specific impacts of climate change – National Climate Center deputy director Xiao Chan stated that the “national average temperature in June was 21.1C”, marking the hottest June since records began, according to business news outlet 21st Century Business Herald. State news agency Xinhua quoted Chen Min, vice-minister of the Ministry of Water Resources, telling reporters that 329 rivers had flooded “above warning levels” as of 4 July. Meanwhile, the government established a new heat-health warning system, which “aims to strengthen public health preparedness amid growing climate challenges”, the state-run newspaper China Daily said.

GRID PRESSURES: Linked to high temperatures along the east coast, the National Energy Administration (NEA) revealed that China’s maximum power demand reached a “record high” of 1,465GW on 4 July, finance news outlet Yicai reported, adding that air-conditioning load “accounted for about 37%” of the peak power grid load in eastern China. Bloomberg said that the grid is “in better shape to take on peak summer demand this year”, following preparations to avoid previous blackouts.

Setting the tone on ‘overcapacity’

MIIT HAUL-UP: In a meeting with solar industry representatives, Ministry of Industry and Information Technology (MIIT) head Li Lecheng said MIIT “will further increase macro-guidance and governance of the industry” in the face of “low-price disorderly competition”, BJX News reported. The Hong Kong-based South China Morning Post (SCMP) noted that Li also said companies should be “guided” to phase out “outdated production capacity”. In its coverage, Bloomberg noted that it was “unclear” what impact the meeting would have, but that it “highlight[ed] the seriousness with which Beijing views” the issue.

CLEAR SIGNALS: The meeting followed days of signalling from China on the need to crack down on industrial overcapacity, which has been blamed for “flood[ing trading] partners’ markets with artificially low-cost goods”, according to the Financial Times. In late June, the front page of the party-affiliated newspaper People’s Daily carried an article under the byline Jin Sheping – used to signal the thoughts of party leadership on economic matters – stating that “rat race competition”, a term linked to overcapacity, would “destroy” industries such as solar, lithium-ion batteries and new-energy vehicles (NEVs). At an economic policy meeting, Xi said China must “govern low-price and disorderly competition…and promote the orderly withdrawal of outdated production capacity”, BJX News said. (He also noted the need to develop more “offshore wind power” and a “unified national market”.) On the same day, ideological journal Qiushi also published an article criticising “rat race competition”. Meanwhile, the Associated Press reported, China also “shows signs of tackling” similar overcapacity issues in the NEV industry.

EUROPE UNHAPPY: European policymakers appear unconvinced, however, with top EU diplomat Kaja Kallas telling her Chinese counterpart Wang Yi that China must “put an end to its distortive practices…which pose significant risks to European companies and endanger the reliability of global supply chains”, according to Reuters. It added that the remarks came during meetings aiming to “lay the groundwork for a summit between EU and Chinese leaders” set to take place on 24 July. Meanwhile, the EU is refusing to consider publishing a joint EU-China climate declaration at the leaders’ summit “unless China pledged greater efforts to cut its greenhouse gas emissions”, the Financial Times reported.

BRICS message on climate finance

MITIGATION FUND: The heads of the BRICS nations, a grouping of China and several other global south countries, “demand[ed] that wealthy nations fund mitigation of greenhouse gas emissions in poorer nations” at a leaders summit in early July, Reuters said. It added that, while Brazil “urged a global transition away from fossil fuels”, the resulting joint statement “argued that petroleum will continue to play an important role in the global energy mix, particularly in developing economies”. Reacting to the summit, the campaign group WWF said in a press release: “When it comes to climate, the message falls short.”

GLOBAL SOUTH VOICE: The Guardian noted that “Brazilian diplomats see the BRICS alliance as part of an emerging new world order”, noting that the summit featured “pushback against the EU” over “discriminatory protectionist measures under the pretext of environmental concerns”. Brazil also used the summit to ask “China and BRICS member states in the Middle East to be among the seed funders” for long-term financing for conservation, the newspaper said, adding that this did not seem to have been successful. The absence of Xi from the meeting, in a first at a BRICS leaders summit, sparked significant speculation around how valuable China saw the block as being.

Spotlight

Key takeaways from China’s latest climate adaptation progress report

China’s Ministry of Ecology and the Environment (MEE) recently published a report outlining China’s progress last year in adapting to climate change. In this issue, Carbon Brief outlines three key messages from the assessment.

Extreme weather events are becoming more severe

China’s climate was “relatively poor” (偏差) in 2024, the MEE report stated, with several “record-breaking or severely disastrous” extreme weather events.

These include extreme heat and cold, rainfall, typhoons, flooding and severe convective weather.

Weather events have generally worsened year-on-year, the report said. In 2024, China’s average temperature stood at 10.9C – the warmest since modern records began.

Similarly, national average rainfall totalled almost 698 millimetres, up 9% year-on-year. More typhoons made landfall in China in 2024 compared to 2023, of which several had “large disaster impacts”, according to the report.

It added that these events had “serious adverse” socio-economic impacts, noting that extreme weather led to at least 500 deaths or disappearances in 2024. (Statistics for deaths and disappearances were not included in the 2023 edition of the report.)

In 2024, the central government spent more than 2.5bn yuan ($350m) on “natural disaster relief funds”, covering flooding, drought and extreme cold.

Climate-resilient infrastructure still a main focus

Extreme weather is also increasingly damaging infrastructure, the report noted. For example, more than 29m users lost power due to extreme weather.

Much of the report is dedicated to describing China’s efforts to develop infrastructure that can resist or help mitigate the effects of extreme weather events.

Managing “water resources” and water conservation continued to receive a strong focus in the report, which added that, in 2024, “major water conservancy projects continued to be developed to a high quality”.

It also noted that this infrastructure buildout “played a key role” in mitigating the impact of floods in 2024, with thousands of reservoirs nationwide being used to store floodwater.

This, it said, “reduced” the impact of 26 floods on 2,300 cities and towns and 17m mu [slightly more than 1m hectares] of arable land”.

The country is also strengthening its ability to predict future extreme weather events, building more than 10,000 new monitoring and early-warning stations in 2024.

Cities are being encouraged to become more “climate resilient”, with 39 authorised to develop pilot programmes exploring possible solutions.

The report noted that, in 2024, 60 cities were developing “sponge city” projects, using nature-based solutions to absorb, collect or reuse floodwater. 

Liu Junyan, project lead for the climate risk project at campaign group Greenpeace East Asia, told Carbon Brief that sponge-city solutions did seem to play a beneficial role during the deadly Henan floods in 2021, where floodwaters receded more quickly in Zhengzhou city than other areas.

“But sponge-city methods are not made to handle the extreme rainfall caused by climate change,” she added.

China’s response is relatively ‘holistic’, but disconnects remain

The MEE report emphasised that China’s overarching climate adaptation strategy covers a broad range of socio-economic impacts.

For example, it mentioned efforts in 2024 to prepare technical guidelines for assessing climate change impacts and risks. Carbon Brief understands that the aim of these efforts is to help provincial governments use more standardised, science-based assessments of climate risk, as well as how they should respond.

The report also noted efforts to develop climate-conscious behaviours, such as campaigns encouraging farmers to use “water-saving” irrigation technologies and guidelines to “enhance public awareness” of potential climate-related health risks.

Liu said China’s approach to adaptation is “holistic”, but added that it remains “top-down”, sometimes causing local needs to go unmet.

Furthermore, the report said China needs to further develop strategies for climate impacts on “urban and rural habitats” and “sensitive” industries such as finance, tourism and energy.

Watch, read, listen

HAWKS AND DOVES: The European Parliament broadcasted a debate on EU-China relations ahead of the upcoming leaders’ summit, in which European Commission president Ursula von der Leyen spoke on electric vehicles, rare earths and overcapacity.

DEFINING MOMENT: Shanghai-based news outlet the Paper interviewed former UN secretary-general Ban Ki-moon on China’s role in accelerating climate ambition this year.

CLIMATE PATH: Analysts at the Asia Society Policy Institute’s China climate hub spoke on Environment China about China’s latest emissions, clean-energy and climate diplomacy trends.
STUNTING GROWTH: The US-based National Public Radio explored how climate change is affecting China’s tea-growers, with crops “stunted” and farmers struggling with “changing rhythms”.


6%

The electrification rate of China’s transport sector – well below the economy-wide figure of close to 30% – despite the rapid adoption of NEVs, Chen Ji, executive director at China International Capital Corporation, said at the China launch of the International Energy Agency’s World Energy Investment 2025 report, attended by Carbon Brief. Chen added that the low figure was due to the lack of progress in electrifying aviation and heavy-duty trucks.


New science

Increased socioeconomic impacts with future intensifying flash droughts in China

Geophysical Research Letters

A new paper found that “China will experience longer and more severe droughts, exposing 33% of the population and 35% of gross domestic product to risks under a medium-emission scenario”. The authors analysed economic and soil moisture data over 2000-22 to quantify past changes in “flash droughts”, using models to assess future changes under different climate scenarios. The paper found that “droughts are becoming more frequent in some areas, with a twofold increase in frequency in approximately 32% of these areas by the century’s end”. It added that wealthier regions will face greater economic losses due to flash droughts.

Climate adaptation through rice northward expansion aggravated groundwater overexploitation in Northeast China

Communications Earth & Environment

Rice cultivation in China’s Sanjiang Plain has expanded northeast by more than two million hectares between 2000 and 2020, driving up irrigation demand by 6bn tonnes, according to a new study. The authors analysed data on “rice migration”, finding that rice expansion drove up irrigation by 122% over 2000-20, while an increase in rainfall due to climate change reduced irrigation demand by 22%. The authors said their findings “highlight the urgent need to make integrated strategies balancing crop migration [with] climate change and water resource conservation”.

The analysis of record-breaking probability of extreme weather in China’s poverty-alleviated counties

Climate Change Research

The poorest counties in China are much more likely to experience record-breaking extreme weather events, which may push them “back to poverty”, according to new research published in a Chinese academic journal. The study combines more than twenty models with eight extreme weather indices to assess “patterns of extreme weather across 832 poverty-alleviated counties [as well as] other counties in China”. The authors recommend actions covering “water infrastructure; disaster mitigation; catastrophe insurance; and public awareness and education” to support climate adaptation in these areas.

China Briefing is compiled by Wanyuan Song and Anika Patel. It is edited by Wanyuan Song and Dr Simon Evans. Please send tips and feedback to china@carbonbrief.org

The post China Briefing 10 July 2025: New sector targets; Overcapacity dressing-down; Adaptation scorecard    appeared first on Carbon Brief.

China Briefing 10 July 2025: New sector targets; Overcapacity dressing-down; Adaptation scorecard   

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Experts: Which climate tipping point is the most concerning?

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Last week, hundreds of scientists, policymakers and journalists flocked to the University of Exeter to attend an international conference on “tipping points”.

The conference saw experts discussing the dangers of a range of Earth system tipping points, including the dieback of the Amazon, the melting of the Greenland ice sheet and the shutdown of the Atlantic Meridional Overturning Circulation (AMOC).

Attendees also explored “positive tipping points” – large-scale, self-propelling social changes that would reduce the impact of humans on the climate.

(For more on the key talking points, new research and ideas that emerged from the four-day event, see Carbon Brief’s full write-up of the event.)

On the sidelines of the conference, Carbon Brief asked a wide range of delegates which tipping point concerns them the most.

These are their responses, first as sample quotes, then, below, in full:

  • Prof Gabi Hegerl: “I am particularly worried about tipping points that involve the biosphere and humans due to breaching thresholds for heat or drought that then ripple into food availability, livelihood and ecosystems.”
  • Prof Carlos Nobre: “The Amazon is a very serious tipping point, because [dieback] could release around 250bn tonnes of CO2 by 2100 – which will make it impossible to [limit global warming] at 1.5C.”
  • Gaia Vince: “I would say that we have already passed the tipping point for coral reef ecosystems…As a scuba diver, I find it a tragedy because I love coral reef ecosystems, but it’s also a tragedy for human systems.”
  • Dr Andrew Hartley: “The tipping point I’m most concerned about is Amazon forest dieback…because of the significance of the carbon cycle and the feedback to the global climate. Also [due to] the effects that Amazon tipping has on food security, both locally and globally.”
  • Prof Tim Lenton: “The Atlantic Meridional Overturning Circulation, or AMOC, for sure. The consequences of crashing that would be devastating globally – and also for where I live in the UK.”
  • Prof Peter Cox: “The one that I’ve worked on most and worries me most at the moment is Amazon dieback. And that’s because we’ve got two things, two stressors, going on at once that push it in the wrong direction. Climate change is one, deforestation is another.”
  • Prof Johan Rockström: “The tipping element that worries me most is coral reef systems, for the simple reason that the scientific uncertainty range is very limited.”
  • Dr Patricia Pinho: “For me, it is the Amazon…I think it’s going to be a really profound, irreversible change that will affect the global population in the most dramatic way.”
  • Prof Ricarda Winkelmann: “I’m mostly concerned about the Greenland and West Antarctic ice sheets. This is because we know that, even at lower warming levels, they are already at risk of transgressing tipping points in certain regions.”
  • Dr Nico Wunderling: “The tipping element that worries me most is the Amazon rainforest. This is because the Amazon rainforest is not only threatened by climate change, but also by deforestation at the same time.”
  • Dr Rebecca Shaw: “The coral reef tipping point…It signals the end of the most colourful and biodiverse ecosystem which supports the nutrition and livelihoods of over one billion people.”
  • Dr David Obura: “The ice [tipping elements] – because they are the first ones to go that have cascading impacts on other tipping elements.”
  • Dr David Armstrong McKay: “The Amazon is actually probably closer to a deforestation-induced tipping point than to a climate change-induced tipping point. So, I actually think that could be potentially in the offing sooner than we would like.”
  • Kate Raworth: “The tipping point that I fear we will fail to cross is [the social tipping point] around transforming our mindsets.”

Prof Gabi Hegerl


Chair in climate system science in the school of geosciences at the University of Edinburgh

I am worried about all of them, but for the immediate future, I am particularly worried about tipping points that involve the biosphere and humans due to breaching thresholds for heat or drought that then ripple into food availability, livelihood and ecosystems. The Earth system tipping points will do that too, but maybe a little bit later. Examples [of this] are the coral diebacks triggered by marine heatwaves, forest change and fires, and droughts threatening livelihoods and putting people on the move.

I did a research project on the US Dust Bowl and the trigger [for that event] was drought causing vegetation and crop dieback, [which led to] extreme heat and dust storms in response – and migration, as memorialised in [the 1939 John Steinbeck novel] The Grapes of Wrath. And, now with warming, all droughts get supercharged.

Prof Carlos Nobre

Prof Carlos Nobre
Scientist and meteorologist who spearheaded the multi-disciplinary, multinational large-scale biosphere-atmosphere experiment in Amazonia


The Amazon is a very serious tipping point, because [dieback] could release around 250bn tonnes of CO2 by 2100 – which will make it impossible to [limit global warming] at 1.5C. We could also lose the largest [host to] biodiversity on the planet, which would induce a tremendous, large number of epidemics and several pandemics. Also, of course, the Amazon forest controls aspects of the global climate. In South America, the climate is entirely controlled by the Amazon forest.

I’m most worried about Amazon [dieback] because I have worked on it for 40 years. But the other tipping points deeply concern me. The melting of the permafrost will release more than 200bn tonnes [of greenhouse gases], mostly methane. Ice sheet melt in Greenland is a very serious tipping point because it could raise sea level rise by three metres in 200 years. The melting of Greenland has already started. Species extinction is also very serious.

One thing that was not much talked about [at this conference] is that when the ocean heats up, particularly the Arctic Ocean, then a tremendous amount of methane is released. And if that happens – if the Arctic Ocean warms up by 3-4C – the amount of methane that would be released could see [air] temperatures reach 8-10C [above pre-industrial levels]. At 8-10C, the only inhabitable places for us humans will be the top of the Alps, the Andes and the north and south poles. The rest of the planet would be uninhabitable.

Gaia VinceGaia Vince

Science writer and broadcaster

I would say that we have already passed the tipping point for coral reef ecosystems, for example. That really is a tragedy. As a scuba diver, I find it a tragedy because I love coral reef ecosystems, but it’s also a tragedy for human systems. They are the nursery for our fisheries. And, of course, they’re not just fisheries – they are a valid ecosystem and a biodiversity hotspot. This will have untold consequences and cascading impacts for other parts of the ecosystem, for example, the cycling of nutrients and coral reefs are really important to stop coastal erosion. And they actually provide sand, the lovely white sand that people go on holiday for Bucha.

Dr Andrew HartleyDr Andrew Hartley

Climate impacts scientist at the Met Office Hadley Centre

The tipping point I’m most concerned about is Amazon forest dieback and reduction in the function of the Amazon forest, because of the significance of the carbon cycle and the feedback to the global climate. Also [due to] the effects that Amazon tipping has on food security, both locally and globally, because of [the Amazon’s] contribution to major commodity markets, such as soybean and maize.

This might interact with climate change in the future to lead to more severe events, particularly in populated areas of Brazil. If an Amazon tipping point were to occur, it might lead to more severe events on the coast of Brazil which would affect a much larger population. There are negative impacts across the forest from the drying of the forest, for example for the Indigenous communities, but also globally.

Prof Tim LentonProf Tim Lenton

Founding director of the Global Systems Institute and chair in climate change and Earth system science at the University of Exeter


The Atlantic Meridional Overtoning Circulation, or AMOC, for sure. The consequences of crashing that would be devastating globally – and also for where I live in the UK. By our own calculation, we could have less than half the viable area for growing a couple of major staple crops, wheat and maize worldwide. We would have a widespread water crisis. We could have collapses of the monsoons in West Africa and India that would displace hundreds of millions of people. It is hard to see that as anything other than a catastrophe.

Prof Peter CoxProf Peter Cox

Professor of climate system dynamics in mathematics and director of the Global Systems Institute at the University of Exeter

The one that I have worked on most and worries me most at the moment is Amazon dieback. And that’s because we’ve got two things, two stressors going on at once that push it in the wrong direction. Climate change is one, deforestation is another. You can imagine crossing the boundary in various ways – but, if you push diagonally, you get there quicker.

If I had spoken to you 25 years ago, I would have said I’m really worried about [Amazon dieback]. Then I went through a phase of thinking that the models have overdone it. And now I’m thinking the models that don’t include land-use change are underdoing it. So, I’m more concerned about that one.

There are others as well, but that is the one that is also quite fast. The other [tipping points] we worry about, we’re worried about a long-term commitment. It takes a while for the AMOC to shut down, it really does. It takes a while for the Greenland ice sheet to melt. We’ve done work that suggests you can overshoot even a little bit for these slow systems. The Amazon forest is a decadal dieback, especially if it is fire driven.

Prof Johan RockströmProf Johan Rockström

Director of the Potsdam Institute for Climate Impact Research (PIK) and professor in Earth system science at the University of Potsdam

There is not a simple answer to this – there is a two-part answer.

The tipping element that worries me most is coral reef systems, for the simple reason that the scientific uncertainty range is very limited. We have, unfortunately, ample evidence that at 1.5C we’re very likely to knock over, potentially, the entire tropical coral reef system on Earth. [This threatens] the livelihoods of 400 million people and a fundamental nursing ground for the whole ocean food web. So that is one deep concern. It is the canary in the coal mine – the first kid on the block to fall over. We’re so close.

The second one is AMOC – the whole overturning of heat in the Atlantic, which connects the entire ocean system. Not only is the latest science showing that we are going from low likelihood to uncomfortably high likelihood, but we also know – with very little uncertainty – that this would cause a catastrophic impact across the entire world, and it would go fast. So the AMOC, I would argue, is today the most important scientific message to the world. If you want a really hard-hitting reason to act at a level of planetary emergency, it is the AMOC. That is the second one.

From a planetary boundary perspective, it is important to recognise that – on climate science grounds – the Amazon basin is not at risk of tipping until 3-5C of warming. But as soon as you factor in loss of biodiversity, deforestation and changes in hydrology – then the temperature risk goes down to between 1.5-2C. So suddenly – when taking a more integrated [assessment] approach – the conclusion is that it is also very close to a tipping point.

Dr Patricia PinhoDr Patricia Pinho

Deputy science director at the Amazon Environmental Research Institute (IPAM)

For me, it is the Amazon. When we think of the planetary crisis, we think about the Amazon and all the regulating climate services it provides. This is not only regionally, but we know it’s a global “climate good”, if you will. But it is highly sensitive to land-use change and increasing temperature. So, if we transition to a point of no return – Amazon dieback – and transforming or transitioning to another ecosystem, the function of the forest will not be doing what it has been doing for the past millennium and so on. And then we cannot revert this loss. I think it is going to be a really profound, irreversible change that will affect the global population in the most dramatic way.

Of course, we have the people on the front line that I’m working with – Indigenous people, traditional population – that are safeguarding this resource, but they are also at the front line of climate risks and the impacts that we already observe. If we miss this opportunity of really reverting from increasing greenhouse emissions and increasing temperature, we’re going to miss the window of opportunity to really protect the region, protect the ecosystem and the forest for the global society.

Prof Ricarda WinkelmannProf Ricarda Winkelmann

Founding director of the Max Planck Institute of Geoanthropology and professor of climate system analysis at PIK and the University of Potsdam

So I am thinking about this from a risk perspective – so both the likelihood as well as the impacts – and I think the answer depends on that. Because when it comes to the likelihood and the particular threshold – and we know about those – I’m mostly concerned about the Greenland and the West Antarctic ice sheets. This is because we know that, even at lower warming levels, they’re already at risk of transgressing tipping points in certain regions.

But when it comes to the impacts and also the timescales over which those play out, there are other tipping elements that worry me most. In particular, regional tipping elements. So if we think of the mountain glaciers, for instance, these impacts are already experienced right now and several mountain glaciers are undergoing these accelerated changes. And so thinking about the timescales when it comes to the impacts is also incredibly important.

Dr Nico WunderlingDr Nico Wunderling

Junior professor at the Center for Critical Computational Studies at Goethe University Frankfurt and researcher at the Potsdam Institute for Climate Impact Research.

The tipping element that worries me most is the Amazon rainforest. This is because the Amazon rainforest is not only threatened by climate change, but also by deforestation at the same time. So that means that the critical threshold from climate change alone, at around 3-4C of global warming, can come down to 1.5-2C. Climate change and deforestation basically go hand-in-hand to lower the [Amazon’s tipping] threshold because of this double threat. 

Dr Rebecca ShawDr Rebecca Shaw

Chief scientist and senior vice-president at WWF

The coral reef tipping point – it comes first because of warming surface waters, and then the outcome is sealed by ocean acidification. It signals the end of the most colourful and biodiverse ecosystem which supports the nutrition and livelihoods of over one billion people and has captured the imagination of more people than any other through the characters like Nemo the clownfish, SpongeBob SquarePants, and, of course, Frank the coral [a character from an educational YouTube video]. 

If humanity is not motivated to act in the face of the loss of coral reefs, is there hope that we will act in time to prevent the Amazon and glacier tipping points?

Dr David OburaDr David Obura

Chair of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services and founding director of CORDIO East Africa

The ice [tipping elements] – because they are the first ones to go that have cascading impacts on other tipping elements. When [ice masses] reduce, we lose their albedo, waters heat up more [and] the AMOC can collapse. That has the biggest impact across the planetary system, including the Amazon.

My own [research], of course, is coral reefs. So, in a way, the coral reef tipping point does concern me the most. [But] it doesn’t have cascading impacts on other tipping elements. It does on people, in socioeconomic terms – but not on other system elements. So, in a sense, it is the least worrying one.

Dr David Armstrong McKayDr David Armstrong McKay

Lecturer in geography, climate change and society in the school of global studies at the University of Sussex and lead author on an influential ​​tipping points assessment, published in Science in 2022

One of the tipping systems that concerns me the most is Amazon rainforest dieback. Because even though we assessed it a few years ago as having a warming threshold that’s a bit higher than what we might be seeing – we’ve thought it is maybe at a best estimate of 3.5C – there’s also deforestation as well. The Amazon is actually probably closer to a deforestation-induced tipping point than to a climate change-induced tipping point. So I actually think that could be potentially in the offing sooner than we would like. That would have huge impacts for biodiversity, for South America as a whole, by shifting rainfall patterns, which would really affect a lot of people for agriculture or ecosystems. Also, the Amazon as an ecosystem is so incredibly biodiverse and amazing in itself, it would be a tragedy to lose it.

Kate RaworthKate Raworth

Senior visiting research associate and lecturer at the University of Oxford’s Environmental Change Institute and co-founder and conceptual lead of Doughnut Economics Action Lab

The tipping point that I fear we will fail to cross is [the social tipping point] around transforming our mindsets. We need to move from the extractive, degenerative economy towards a regenerative one. This all starts within our head and it underlies everything.

[A failure to do this] is what is driving us towards all these [Earth system tipping points].

The post Experts: Which climate tipping point is the most concerning? appeared first on Carbon Brief.

Experts: Which climate tipping point is the most concerning?

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