The latest round of country climate plans ‘barely move the needle’ on future warming, the head of the UN Environment Programme (UNEP) has warned.
Executive director Inger Anderson made the comments as UNEP published its 16th annual assessment of the global “emissions gap”.
The report sets out the gap between where global emissions are headed – based on announced national policies and pledges – and what is needed to meet international temperature targets.
It finds that the latest round of national climate plans – which were due to the UN this year under Paris Agreement rules – will have a “limited effect” on narrowing this emissions gap.
Currently, the world is on track for 2.3-2.5C of warming this century if all national emissions-cutting plans out to 2035 are implemented in full, according to the report.
In a statement, UNEP executive director Inger Anderson said: “While national climate plans have delivered some progress, it is nowhere near fast enough.”
A decade on from the Paris Agreement, the UN agency credits the climate treaty for its “pivotal” role in lowering global temperature projections and driving a rise of renewable energy technologies, policies and targets.
Nevertheless, it warns that countries’ failure to cut emissions quickly enough means the world is “very likely” to breach the Paris Agreement’s aspirational 1.5C temperature limit “this decade”.
It urges countries to make any “overshoot” of the 1.5C warming target “temporary and minimal”, so as to reduce damages to people and ecosystems, as well as future reliance on “risky and costly” carbon removal methods.
Among the other key findings of the report are that China’s emissions could peak in 2025, while the impact of recent climate policy reversals in the US are likely to be outweighed by lower emissions in other countries in the coming years.
(See Carbon Brief’s detailed coverage of previous reports in 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 and 2024.)
Greenhouse gas emissions continue to grow
The UNEP report finds that global emissions of greenhouse gases – carbon dioxide (CO2), methane, nitrous oxide and fluorinated gases (F-gases) – reached a record 57.7bn tonnes of CO2 equivalent (GtCO2e) in 2024. This marks a 2.3% increase compared to 2023 emissions.
This increase is “high” compared to the rise of 1.6% recorded between 2022 and 2023, the report says.
This rate of increase is more than four times higher than the average annual emissions growth rate throughout the 2010s, the report notes, and is comparable with the 2.2%-per-year rate seen in the 2000s.
The chart below shows total greenhouse gas emissions between 1990 and 2024.
It illustrates that “fossil CO2” (black), driven by the combustion of coal, oil and gas, is the largest contributor to annual emissions and the main driver of the increase in recent decades, accounting for around 69% of current emissions.
Methane (grey) plays the second largest role. Meanwhile, emissions from nitrous oxide (blue) fluoride gases (orange) and land use, land-use change and forestry (LULUCF, in green) make up 24% of total greenhouse gas emissions.
The report notes that all “all major sectors and categories” of greenhouse gas emissions saw an increase in 2024. For example, fossil CO2 emissions increased by 1.1% between 2023 and 2024.
However, it highlights that deforestation and land-use emissions played a “decisive” role in the overall increase last year. According to the report, net LULUCF CO2 emissions rose by a fifth – some 21% – between 2023 and 2024.
This spike is in contrast to the past decade, the report notes, where emissions from land-use change have “trended downwards”.
It says one of the reasons for the increase in LULUCF emissions over 2023-24 is the rise in emissions from tropical deforestation and degradation in South America, which were among the highest recorded since 1997.
The authors also break down changes in greenhouse gases by country or country group. They note that the six largest emitters in the world are China, the US, India, the EU, Russia and Indonesia.
The report finds that, when emissions from land use are excluded, emissions from the G20 countries accounted for 77% of the overall increase in emissions over 2023-24. Meanwhile, the “least developed countries” group contributed only 3% of the increase.
The graph below shows contributions to the change in greenhouse gas emissions between 2023 and 2024 for the five highest-emitting countries and groups, as well as for the rest of the G20 countries (purple), the rest of the world (grey), LULUCF globally (green) and international transport (dark blue).
The bottom horizontal black line shows the 56.2GtCO2e emitted in 2023. The size of each bar indicates the change in emissions between 2023 and 2024. The top horizontal black line shows the 57.7GtCO2e emitted in 2024.
The chart illustrates how India and China are the countries that recorded the largest individual increase in emissions between 2023 and 2024, while the EU is the only grouping where emissions decreased.
India and China recorded the largest absolute increase in emissions beyond the land sector. However, Indonesia saw the highest percentage increase of 4.6% (compared to 3.6% for India and 0.5% for China). In contrast, emissions from the EU decreased by 2.1%.
New national climate plans fall short
Under the terms of the Paris Agreement, countries are required to submit national climate plans, known as “nationally determined contributions” (NDCs), to the UN every five years. These documents describe each country’s plans to cut emissions and adapt to climate change.
The deadline for countries to submit NDCs for 2035 was February 2025.
(Carbon Brief reported earlier this year that 95% of countries had missed the February deadline and, more recently, that just one-third of new plans submitted by the end of September expressed support for “transitioning away” from fossil fuels.)
By September 2025, 64 parties had submitted or announced their new NDCs. UNEP says that 60 of these countries accounted for 63% of global emissions. Meanwhile, only 13 countries, accounting for less than 1% of global emissions, had updated their emissions reduction targets for 2030.
Writing in the foreword to the report, UNEP’s Inger Andersen says that “many hoped [the pledges] would demonstrate a step change in ambition and action to lower greenhouse gas emissions and avoid an intensification of the climate crisis that is hammering people and economies”. However, she adds that “this ambition and action did not materialise”.
The report emphasises that “immediate and stringent emissions reductions” are the “fundamental ingredient” for meeting the Paris temperature goal of keeping warming this century to well-below 2C and making efforts to keep it to 1.5C.
However, it adds that the new NDCs and “current geopolitical situation” do not provide “promising signs” that these emissions cuts will happen.
The report presents a “deep dive” into the emissions reduction targets of G20 countries – the world’s largest economies, which are collectively responsible for more than three-quarters of global emissions.
The analysis investigates NDCs and policy updates as of November 2024.
None of the G20 countries have strengthened their targets for 2030, according to the report. However, it finds that seven G20 countries have submitted NDCs with emissions reduction targets for 2035. The EU, China and Turkey have announced targets, but had not yet submitted 2035 climate plans to the UN by the time the report was finalised.
According to the report, the new NDCs and policy updates of G20 countries lead to a reduction in projected emissions by 2035. However, these reductions are “relatively small and surrounded by significant uncertainty”, it cautions.
Nevertheless, UNEP says there are a number of G20 countries whose emissions projections have seen “significant changes” in this year’s report, including the US and China.
For the first time, the projections in the gap report suggest that China will see its emissions peak in 2025, followed by a reduction in emissions of 0.3-1.4GtCO2e by 2030. According to the report, this is due to the growth of renewable electricity generation in the country “outpacing” overall power demand growth.
In contrast, the authors warn that projections for US emissions in 2030 have increased by 1GtCO2e compared to last year’s assessment, mainly due to “policy reversals”.
(Since taking office in January 2025, Donald Trump has triggered the process of withdrawing the US from the Paris Agreement for the second time and dismantled US climate policies implemented under Joe Biden. The UNEP report does not specifically mention Trump or his administration.)
However, it finds that lower greenhouse gas projections for China and several other countries outweigh the higher projections in the US by 2030.
Overall, the report projects that, under current climate policies, annual emissions from G20 countries will drop to 35GtCO2 by 2030 and 33Gt by 2035.
China is the largest contributor to this projected reduction, followed by the EU then the US, according to the report. (Emissions from the US are still projected to decline, albeit much more slowly than previously expected.)
It adds that other G20 members are on “clear downward emission trends”, noting that “several more” might see emissions “peak or plateau between 2030 and 2035” under current policies.
The graph below shows the historical emissions (light blue) and projected emissions (dark blue) of the G20 members, along with their NDCs for 2030 and 2035 (shown by the diamonds) and net-zero targets (circles).
The graph shows that some countries, such as Turkey and Russia, are projected to cut emissions more rapidly than they have pledged under their NDCs. In contrast, other nations, such as the UK and Canada, are anticipated to fall short of the emissions-reduction goals set out in their national climate plans.
New NDCs and policy updates lower expected emissions in 2035
The report conducts an “emissions gap” analysis that compares the emissions that would be released if countries follow their climate policies or pledges, with the levels that would be needed in order to hold warming below 2C, 1.8C and 1.5C with limited or no overshoot.
The “gap” between these two values shows how much further emissions would need to be reduced in order to limit warming below global temperature thresholds.
To explore potential rises in global temperature over the coming years and decades, the report authors use a simple climate model, or “emulator”, called FaIR. They assess a range of potential futures:
- A “current policy” scenario, which assumes that countries follow policies adopted as of November 2024. This scenario also assumes the full implementation of announced policy rollbacks in the US as of September 2025.
- An “unconditional NDCs” scenario, which assumes the implementation of NDCs that do not depend on external support. This scenario includes the US NDC, as withdrawal from the Paris Agreement will not be complete until January 2026.
- A “conditional NDCs” scenario that further assumes the implementation of NDCs that depend on external support, such as climate finance from wealthier countries.
The report also analyses two “scenario extensions”, which explore the post-2035 implications of current policies, NDCs and net-zero pledges:
- A “current policies continuing” scenario, which “follows current policies to 2035 and assumes a continuation of similar efforts thereafter”.
- A “conditional NDCs plus all net-zero pledges” scenario, which is “the most optimistic scenario included”. This scenario assumes the “conditional NDC” scenario is achieved until 2035 and then all net-zero or other long-term low emissions developments strategies are followed thereafter, excluding that of the US.
The authors note that emissions projections for 2030 under the “current policy” scenario in this year’s report are slightly larger than they were in last year’s assessment. The authors say this is “mainly” due to policy rollbacks in the US.
In contrast, this report projects slightly lower emissions for 2035 than last year’s report, as policy changes in the US are offset by “improved 2035 policy estimates” in other countries.
The authors find that the new NDCs have “no effect” on the 2030 gap when compared to last year’s assessment.
According to the report, implementing unconditional NDCs would result in emissions in 2030 being 12GtCO2e above the level required to limit warming to 2C. This number rises to 20GtCO2e for a 1.5C scenario.
Also implementing conditional NDCs would shrink these gaps by around 2GtCO2e, the report says.
(The authors note that these numbers are slightly smaller than in last year’s report, but say this is not a reflection of “strengthening of 2030 NDC targets”, but instead from “updated emission trends by modelling groups and methodological updates”.)
The report adds that the formal withdrawal of the US from the Paris Agreement for a second time will mean that emissions laid out in the US NDC are not counted. This will increase the emissions gap by 2GtCO2e, the report says.
According to the report, the new NDCs do narrow the 2035 emissions gap compared to last year’s assessment. The report says:
“The unconditional and conditional NDC gaps with respect to 2C and 1.5C pathways are 6bn and 4bn tonnes of CO2e lower than last year, respectively.”
This means that the “emissions gap” between a world that follows conditional NDCs and one that limits warming to 2C above pre-industrial temperatures is 6GtCO2e smaller in this year’s report than last year’s. Similarly, the gap between the “conditional NDCs” scenario and the 1.5C scenario is now 4GtCO2e smaller.
Despite the improvement, the report warns that the emissions gap “remains large”.
The graph below shows historical and projected global emissions over 2015-35 under the current policy (dark blue), unconditional NDCs (mid blue), conditional NDCs (light blue), 2C (pink) and 1.5C (red) scenarios.
The report also warns that there is an “implementation gap”, as countries are currently not on track to achieve their NDC targets.
The authors say the implementation gap is currently 5GtCO2e for unconditional NDCs by 2030 and 7GtCO2e for conditional NDCs, or around 2GtCO2e lower once the US withdrawal from the Paris Agreement is complete next year.
‘Limited’ progress on reducing future warming
UNEP calculates that the full implementation of both conditional and unconditional NDCs would reduce emissions in 2035 by 12% and 15%, respectively, on 2019 levels. However, these percentages shrink to 9% and 11% if the US NDC is discounted.
The projections suggest there will be a “peak and decline” in global emissions. However, the report says the large range of estimates that remain around global emissions reductions means there is “continued uncertainty” around when peaking could happen.
Projected emissions cuts by 2035 are “far smaller” than the 35% reduction required to align with a 2C pathway and the even steeper cut of 55% required for a 1.5C pathway, the report says.
The authors say that temperature projections set out in this year’s report are only “slightly lower” – at 0.3C – than last year’s assessment.
It notes that new policy projections and NDC targets announced since the last assessment have lowered warming projections by 0.2C. “Methodological updates” are responsible for the remaining 0.1C.
Furthermore, the forthcoming withdrawal of the US from the Paris Agreement would reverse 0.1C of this “limited progress”, the report notes.
Responding to these figures in the report’s foreword, UNEP’s Anderson says the new pledges have “barely moved the needle” on temperature projections.
The chart below shows the different warming projections under four of the scenarios explored in the report.
It shows how, under the current policies pathway, there is a 66% chance of warming being limited to 2.8C. In a scenario where efforts are made to meet conditional NDCs in full, there is the same probability that warming could be capped at 2.3C.
In the most optimistic scenario – where all NDCs and net-zero targets are implemented – there is a 66% chance that warming could be constrained to 1.9C. (This projection remains unchanged since last year’s report.)
The report warns that, across all scenarios, the central warming projections would see global warming surpass 1.5C “by several tenths of a degree” by mid-century. And it calculates there is a 21-33% likelihood that warming could exceed 2C by 2050.
Nevertheless, it stresses that the Paris Agreement has been “pivotal” in reducing temperature projections. Policies at the time of the treaty’s adoption would have put the world on track for warming “just below 4C”.
1.5C limit could be exceeded within a decade
UNEP notes that its updated temperature projections underscore an “uncomfortable truth” that surpassing the Paris Agreement’s 1.5C warming limit is “increasingly near”.
The limit – which refers to long-term warming over a pre-industrial baseline and not average warming in any particular year – could be exceeded “within the next decade”, it says. However, the report emphasises that it remains “technically possible” to return to 1.5C by 2100.
Global inaction on emissions in the 2020s means that 1.5C pathways explored in previous emission gap reports and Intergovernmental Panel on Climate Change’s sixth assessment cycle are “no longer fully achievable”, according to UNEP.
Moreover, a lack of “stringent emissions cuts” in recent years means climate pathways with “limited” overshoot of 1.5C are also “slipping out of reach”, the authors say.
A future of “higher and potentially longer” overshoot of 1.5C is “increasingly likely”, they warn.
Climate “overshoot” pathways are those where temperatures exceed 1.5C temporarily, before being brought back below the threshold using techniques that remove carbon from the atmosphere.
(For more on climate overshoot, read Carbon Brief’s detailed write-up of a recent conference dedicated to the concept.)
Elsewhere, the report notes the remaining “carbon budget” for limiting warming to 1.5C without any overshoot of the goal will “likely be exhausted” before 2030.
(The carbon budget is the total amount of CO2 that scientists estimate can be emitted if warming is to be kept below a particular temperature threshold. Earlier this year, the Indicators of Global Climate Change report estimated the remaining carbon budget had declined by three-quarters between the start of 2020 and the start of 2025.)
The graphic below illustrates the percentage likelihood of limiting warming under 1.5C, 2C and 3C under the four scenarios set out in the report.
It shows how the chances of limiting warming to below 1.5C throughout the 21st century is close to zero in all but the most optimistic scenario. In the scenario where conditional NDCs and net-zero pledges are met, the chances of limiting temperatures below the goal is just 21%.
The report stresses that it is critical to limit “magnitude and duration” of overshoot to avoid “greater losses for people and ecosystems”, higher adaptation costs and a heavier reliance on “costly and uncertain carbon dioxide removal”.
Roughly 220GtCO2 of carbon removals will be required to reverse every 0.1C of overshoot, according to the report. This is equivalent to five years of global annual CO2 emissions.
The report also warns that it is “highly unlikely” that all risks and hazards will “reverse proportionately” after a period of temperature overshoot.
UNEP states that pursuing the 1.5C temperature goal is nevertheless a “legal, moral and political obligation” for governments regardless of whether warming exceeds the target.
The UN agency emphasises that the 2015 Paris Agreement establishes “no target date or expiration” for its temperature goal – and points to the International Court of Justice’s recent advisory opinion that 1.5C remains the “primary target” of the climate treaty.
The post UNEP: New country climate plans ‘barely move needle’ on expected warming appeared first on Carbon Brief.
UNEP: New country climate plans ‘barely move needle’ on expected warming
Greenhouse Gases
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.
This is an online version of Carbon Brief’s fortnightly Cropped email newsletter.
Subscribe for free here.
Key developments
Food inflation on the rise
DELUGE STRIKES FOOD: Extreme rainfall and flooding across the Mediterranean and north Africa has “battered the winter growing regions that feed Europe…threatening food price rises”, reported the Financial Times. Western France has “endured more than 36 days of continuous rain”, while farmers’ associations in Spain’s Andalusia estimate that “20% of all production has been lost”, it added. Policy expert David Barmes told the paper that the “latest storms were part of a wider pattern of climate shocks feeding into food price inflation”.
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NO BEEF: The UK’s beef farmers, meanwhile, “face a double blow” from climate change as “relentless rain forces them to keep cows indoors”, while last summer’s drought hit hay supplies, said another Financial Times article. At the same time, indoor growers in south England described a 60% increase in electricity standing charges as a “ticking timebomb” that could “force them to raise their prices or stop production, which will further fuel food price inflation”, wrote the Guardian.
‘TINDERBOX’ AND TARIFFS: A study, covered by the Guardian, warned that major extreme weather and other “shocks” could “spark social unrest and even food riots in the UK”. Experts cited “chronic” vulnerabilities, including climate change, low incomes, poor farming policy and “fragile” supply chains that have made the UK’s food system a “tinderbox”. A New York Times explainer noted that while trade could once guard against food supply shocks, barriers such as tariffs and export controls – which are being “increasingly” used by politicians – “can shut off that safety valve”.
El Niño looms
NEW ENSO INDEX: Researchers have developed a new index for calculating El Niño, the large-scale climate pattern that influences global weather and causes “billions in damages by bringing floods to some regions and drought to others”, reported CNN. It added that climate change is making it more difficult for scientists to observe El Niño patterns by warming up the entire ocean. The outlet said that with the new metric, “scientists can now see it earlier and our long-range weather forecasts will be improved for it.”
WARMING WARNING: Meanwhile, the US Climate Prediction Center announced that there is a 60% chance of the current La Niña conditions shifting towards a neutral state over the next few months, with an El Niño likely to follow in late spring, according to Reuters. The Vibes, a Malaysian news outlet, quoted a climate scientist saying: “If the El Niño does materialise, it could possibly push 2026 or 2027 as the warmest year on record, replacing 2024.”
CROP IMPACTS: Reuters noted that neutral conditions lead to “more stable weather and potentially better crop yields”. However, the newswire added, an El Niño state would mean “worsening drought conditions and issues for the next growing season” to Australia. El Niño also “typically brings a poor south-west monsoon to India, including droughts”, reported the Hindu’s Business Line. A 2024 guest post for Carbon Brief explained that El Niño is linked to crop failure in south-eastern Africa and south-east Asia.
News and views
- DAM-AG-ES: Several South Korean farmers filed a lawsuit against the country’s state-owned utility company, “seek[ing] financial compensation for climate-related agricultural damages”, reported United Press International. Meanwhile, a national climate change assessment for the Philippines found that the country “lost up to $219bn in agricultural damages from typhoons, floods and droughts” over 2000-10, according to Eco-Business.
- SCORCHED GRASS: South Africa’s Western Cape province is experiencing “one of the worst droughts in living memory”, which is “scorching grass and killing livestock”, said Reuters. The newswire wrote: “In 2015, a drought almost dried up the taps in the city; farmers say this one has been even more brutal than a decade ago.”
- NOUVELLE VEG: New guidelines published under France’s national food, nutrition and climate strategy “urged” citizens to “limit” their meat consumption, reported Euronews. The delayed strategy comes a month after the US government “upended decades of recommendations by touting consumption of red meat and full-fat dairy”, it noted.
- COURTING DISASTER: India’s top green court accepted the findings of a committee that “found no flaws” in greenlighting the Great Nicobar project that “will lead to the felling of a million trees” and translocating corals, reported Mongabay. The court found “no good ground to interfere”, despite “threats to a globally unique biodiversity hotspot” and Indigenous tribes at risk of displacement by the project, wrote Frontline.
- FISH FALLING: A new study found that fish biomass is “falling by 7.2% from as little as 0.1C of warming per decade”, noted the Guardian. While experts also pointed to the role of overfishing in marine life loss, marine ecologist and study lead author Dr Shahar Chaikin told the outlet: “Our research proves exactly what that biological cost [of warming] looks like underwater.”
- TOO HOT FOR COFFEE: According to new analysis by Climate Central, countries where coffee beans are grown “are becoming too hot to cultivate them”, reported the Guardian. The world’s top five coffee-growing countries faced “57 additional days of coffee-harming heat” annually because of climate change, it added.
Spotlight
Nature talks inch forward
This week, Carbon Brief covers the latest round of negotiations under the UN Convention on Biological Diversity (CBD), which occurred in Rome over 16-19 February.
The penultimate set of biodiversity negotiations before October’s Conference of the Parties ended in Rome last week, leaving plenty of unfinished business.
The CBD’s subsidiary body on implementation (SBI) met in the Italian capital for four days to discuss a range of issues, including biodiversity finance and reviewing progress towards the nature targets agreed under the Kunming-Montreal Global Biodiversity Framework (GBF).
However, many of the major sticking points – particularly around finance – will have to wait until later this summer, leaving some observers worried about the capacity for delegates to get through a packed agenda at COP17.
The SBI, along with the subsidiary body on scientific, technical and technological advice (SBSTTA) will both meet in Nairobi, Kenya, later this summer for a final round of talks before COP17 kicks off in Yerevan, Armenia, on 19 October.
Money talks
Finance for nature has long been a sticking point at negotiations under the CBD.
Discussions on a new fund for biodiversity derailed biodiversity talks in Cali, Colombia, in autumn 2024, requiring resumed talks a few months later.
Despite this, finance was barely on the agenda at the SBI meetings in Rome. Delegates discussed three studies on the relationship between debt sustainability and implementation of nature plans, but the more substantive talks are set to take place at the next SBI meeting in Nairobi.
Several parties “highlighted concerns with the imbalance of work” on finance between these SBI talks and the next ones, reported Earth Negotiations Bulletin (ENB).
Lim Li Ching, senior researcher at Third World Network, noted that tensions around finance permeated every aspect of the talks. She told Carbon Brief:
“If you’re talking about the gender plan of action – if there’s little or no financial resources provided to actually put it into practice and implement it, then it’s [just] paper, right? Same with the reporting requirements and obligations.”
Monitoring and reporting
Closely linked to the issue of finance is the obligations of parties to report on their progress towards the goals and targets of the GBF.
Parties do so through the submission of national reports.
Several parties at the talks pointed to a lack of timely funding for driving delays in their reporting, according to ENB.
A note released by the CBD Secretariat in December said that no parties had submitted their national reports yet; by the time of the SBI meetings, only the EU had. It further noted that just 58 parties had submitted their national biodiversity plans, which were initially meant to be published by COP16, in October 2024.
Linda Krueger, director of biodiversity and infrastructure policy at the environmental not-for-profit Nature Conservancy, told Carbon Brief that despite the sparse submissions, parties are “very focused on the national report preparation”. She added:
“Everybody wants to be able to show that we’re on the path and that there still is a pathway to getting to 2030 that’s positive and largely in the right direction.”
Watch, read, listen
NET LOSS: Nigeria’s marine life is being “threatened” by “ghost gear” – nets and other fishing equipment discarded in the ocean – said Dialogue Earth.
COMEBACK CAUSALITY: A Vox long-read looked at whether Costa Rica’s “payments for ecosystem services” programme helped the country turn a corner on deforestation.
HOMEGROWN GOALS: A Straits Times podcast discussed whether import-dependent Singapore can afford to shelve its goal to produce 30% of its food locally by 2030.
‘RUSTING’ RIVERS: The Financial Times took a closer look at a “strange new force blighting the [Arctic] landscape”: rivers turning rust-orange due to global warming.
New science
- Lakes in the Congo Basin’s peatlands are releasing carbon that is thousands of years old | Nature Geoscience
- Natural non-forest ecosystems – such as grasslands and marshlands – were converted for agriculture at four times the rate of land with tree cover between 2005 and 2020 | Proceedings of the National Academy of Sciences
- Around one-quarter of global tree-cover loss over 2001-22 was driven by cropland expansion, pastures and forest plantations for commodity production | Nature Food
In the diary
- 2-6 March: UN Food and Agriculture Organization regional conference for Latin America and Caribbean | Brasília
- 5 March: Nepal general elections
- 9-20 March: First part of the thirty-first session of the International Seabed Authority (ISA) | Kingston, Jamaica
Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz.
Please send tips and feedback to cropped@carbonbrief.org
The post Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate appeared first on Carbon Brief.
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
Rising temperatures across France since the mid-1970s is putting Tour de France competitors at “high risk”, according to new research.
The study, published in Scientific Reports, uses 50 years of climate data to calculate the potential heat stress that athletes have been exposed to across a dozen different locations during the world-famous cycling race.
The researchers find that both the severity and frequency of high-heat-stress events have increased across France over recent decades.
But, despite record-setting heatwaves in France, the heat-stress threshold for safe competition has rarely been breached in any particular city on the day the Tour passed through.
(This threshold was set out by cycling’s international governing body in 2024.)
However, the researchers add it is “only a question of time” until this occurs as average temperatures in France continue to rise.
The lead author of the study tells Carbon Brief that, while the race organisers have been fortunate to avoid major heat stress on race days so far, it will be “harder and harder to be lucky” as extreme heat becomes more common.
‘Iconic’
The Tour de France is one of the world’s most storied cycling races and the oldest of Europe’s three major multi-week cycling competitions, or Grand Tours.
Riders cover around 3,500 kilometres (km) of distance and gain up to nearly 55km of altitude over 21 stages, with only two or three rest days throughout the gruelling race.
The researchers selected the Tour de France because it is the “iconic bike race. It is the bike race of bike races,” says Dr Ivana Cvijanovic, a climate scientist at the French National Research Institute for Sustainable Development, who led the new work.
Heat has become a growing problem for the competition in recent years.
In 2022, Alexis Vuillermoz, a French competitor, collapsed at the finish line of the Tour’s ninth stage, leaving in an ambulance and subsequently pulling out of the race entirely.
Two years later, British cyclist Sir Mark Cavendish vomited on his bike during the first stage of the race after struggling with the 36C heat.
The Tour also makes a good case study because it is almost entirely held during the month of July and, while the route itself changes, there are many cities and stages that are repeated from year to year, Cvijanovic adds.
‘Have to be lucky’
The study focuses on the 50-year span between 1974 and 2023.
The researchers select six locations across the country that have commonly hosted the Tour, from the mountain pass of Col du Tourmalet, in the French Pyrenees, to the city of Paris – where the race finishes, along the Champs-Élysées.
These sites represent a broad range of climatic zones: Alpe d’ Huez, Bourdeaux, Col du Tourmalet, Nîmes, Paris and Toulouse.
For each location, they use meteorological reanalysis data from ERA5 and radiant temperature data from ERA5-HEAT to calculate the “wet-bulb globe temperature” (WBGT) for multiple times of day across the month of July each year.
WBGT is a heat-stress index that takes into account temperature, humidity, wind speed and direct sunlight.
Although there is “no exact scientific consensus” on the best heat-stress index to use, WBGT is “one of the rare indicators that has been originally developed based on the actual human response to heat”, Cvijanovic explains.
It is also the one that the International Cycling Union (UCI) – the world governing body for sport cycling – uses to assess risk. A WBGT of 28C or higher is classified as “high risk” by the group.
WBGT is the “gold standard” for assessing heat stress, says Dr Jessica Murfree, director of the ACCESS Research Laboratory and assistant professor at the University of North Carolina at Chapel Hill.
Murfree, who was not involved in the new study, adds that the researchers are “doing the right things by conducting their science in alignment with the business practices that are already happening”.
The researchers find that across the 50-year time period, WBGT has been increasing across the entire country – albeit, at different rates. In the north-west of the country, WBGT has increased at an average rate of 0.1C per decade, while in the southern and eastern parts of the country, it has increased by more than 0.5C per decade.
The maps below show the maximum July WBGT for each decade of the analysis (rows) and for hourly increments of the late afternoon (columns). Lower temperatures are shown in lighter greens and yellows, while higher temperatures are shown in darker reds and purples.
Six Tour de France locations analysed in the study are shown as triangles on the maps (clockwise from top): Paris, Alpe d’ Huez, Nîmes, Toulouse, Col du Tourmalet and Bordeaux.
The maps show that the maximum WBGT temperature in the afternoon has surpassed 28C over almost the entire country in the last decade. The notable exceptions to this are the mountainous regions of the Alps and the Pyrenees.
The researchers also find that most of the country has crossed the 28C WBGT threshold – which they describe as “dangerous heat levels” – on at least one July day over the past decade. However, by looking at the WBGT on the day the Tour passed through any of these six locations, they find that the threshold has rarely been breached during the race itself.
For example, the research notes that, since 1974, Paris has seen a WBGT of 28C five times at 3pm in July – but that these events have “so far” not coincided with the cycling race.
The study states that it is “fortunate” that the Tour has so far avoided the worst of the heat-stress.
Cvijanovic says the organisers and competitors have been “lucky” to date. She adds:
“It has worked really well for them so far. But as the frequency of these [extreme heat] events is increasing, it will be harder and harder to be lucky.”
Dr Madeleine Orr, an assistant professor of sport ecology at the University of Toronto who was not involved in the study, tells Carbon Brief that the paper was “really well done”, noting that its “methods are good [and its] approach was sound”. She adds:
“[The Tour has] had athletes complain about [the heat]. They’ve had athletes collapse – and still those aren’t the worst conditions. I think that that says a lot about what we consider safe. They’ve still been lucky to not see what unsafe looks like, despite [the heat] having already had impacts.”
Heat safety protocols
In 2024, the UCI set out its first-ever high temperature protocol – a set of guidelines for race organisers to assess athletes’ risk of heat stress.
The assessment places the potential risk into one of five categories based on the WBGT, ranging from very low to high risk.
The protocol then sets out suggested actions to take in the event of extreme heat, ranging from having athletes complete their warm-ups using ice vests and cold towels to increasing the number of support vehicles providing water and ice.
If the WBGT climbs above the 28C mark, the protocol suggests that organisers modify the start time of the stage, adapt the course to remove particularly hazardous sections – or even cancel the race entirely.
However, Orr notes that many other parts of the race, such as spectator comfort and equipment functioning, may have lower temperatures thresholds that are not accounted for in the protocol, but should also be considered.
Murfree points out that the study’s findings – and the heat protocol itself – are “really focused on adaptation, rather than mitigation”. While this is “to be expected”, she tells Carbon Brief:
“Moving to earlier start times or adjusting the route specifically to avoid these locations that score higher in heat stress doesn’t stop the heat stress. These aren’t climate preventative measures. That, I think, would be a much more difficult conversation to have in the research because of the Tour de France’s intimate relationship with fossil-fuel companies.”
The post Dangerous heat for Tour de France riders only a ‘question of time’ appeared first on Carbon Brief.
Dangerous heat for Tour de France riders only a ‘question of time’
Greenhouse Gases
DeBriefed 20 February 2026: EU’s ‘3C’ warning | Endangerment repeal’s impact on US emissions | ‘Tree invasion’ fuelled South America’s fires
Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Preparing for 3C
NEW ALERT: The EU’s climate advisory board urged countries to prepare for 3C of global warming, reported the Guardian. The outlet quoted Maarten van Aalst, a member of the advisory board, saying that adapting to this future is a “daunting task, but, at the same time, quite a doable task”. The board recommended the creation of “climate risk assessments and investments in protective measures”.
‘INSUFFICIENT’ ACTION: EFE Verde added that the advisory board said that the EU’s adaptation efforts were so far “insufficient, fragmented and reactive” and “belated”. Climate impacts are expected to weaken the bloc’s productivity, put pressure on public budgets and increase security risks, it added.
UNDERWATER: Meanwhile, France faced “unprecedented” flooding this week, reported Le Monde. The flooding has inundated houses, streets and fields and forced the evacuation of around 2,000 people, according to the outlet. The Guardian quoted Monique Barbut, minister for the ecological transition, saying: “People who follow climate issues have been warning us for a long time that events like this will happen more often…In fact, tomorrow has arrived.”
IEA ‘erases’ climate
MISSING PRIORITY: The US has “succeeded” in removing climate change from the main priorities of the International Energy Agency (IEA) during a “tense ministerial meeting” in Paris, reported Politico. It noted that climate change is not listed among the agency’s priorities in the “chair’s summary” released at the end of the two-day summit.
US INTERVENTION: Bloomberg said the meeting marked the first time in nine years the IEA failed to release a communique setting out a unified position on issues – opting instead for the chair’s summary. This came after US energy secretary Chris Wright gave the organisation a one-year deadline to “scrap its support of goals to reduce energy emissions to net-zero” – or risk losing the US as a member, according to Reuters.
Around the world
- ISLAND OBJECTION: The US is pressuring Vanuatu to withdraw a draft resolution supporting an International Court of Justice ruling on climate change, according to Al Jazeera.
- GREENLAND HEAT: The Associated Press reported that Greenland’s capital Nuuk had its hottest January since records began 109 years ago.
- CHINA PRIORITIES: China’s Energy Administration set out its five energy priorities for 2026-2030, including developing a renewable energy plan, said International Energy Net.
- AMAZON REPRIEVE: Deforestation in the Brazilian Amazon has continued to fall into early 2026, extending a downward trend, according to the latest satellite data covered by Mongabay.
- GEZANI DESTRUCTION: Reuters reported the aftermath of the Gezani cyclone, which ripped through Madagascar last week, leaving 59 dead and more than 16,000 displaced people.
20cm
The average rise in global sea levels since 1901, according to a Carbon Brief guest post on the challenges in projecting future rises.
Latest climate research
- Wildfire smoke poses negative impacts on organisms and ecosystems, such as health impacts on air-breathing animals, changes in forests’ carbon storage and coral mortality | Global Ecology and Conservation
- As climate change warms Antarctica throughout the century, the Weddell Sea could see the growth of species such as krill and fish and remain habitable for Emperor penguins | Nature Climate Change
- About 97% of South American lakes have recorded “significant warming” over the past four decades and are expected to experience rising temperatures and more frequent heatwaves | Climatic Change
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured
Repealing the US’s landmark “endangerment finding”, along with actions that rely on that finding, will slow the pace of US emissions cuts, according to Rhodium Group visualised by Carbon Brief. US president Donald Trump last week formally repealed the scientific finding that underpins federal regulations on greenhouse gas emissions, although the move is likely to face legal challenges. Data from the Rhodium Group, an independent research firm, shows that US emissions will drop more slowly without climate regulations. However, even with climate regulations, emissions are expected to drop much slower under Trump than under the previous Joe Biden administration, according to the analysis.
Spotlight
How a ‘tree invasion’ helped to fuel South America’s fires
This week, Carbon Brief explores how the “invasion” of non-native tree species helped to fan the flames of forest fires in Argentina and Chile earlier this year.
Since early January, Chile and Argentina have faced large-scale and deadly wildfires, including in Patagonia, which spans both countries.
These fires have been described as “some of the most significant and damaging in the region”, according to a World Weather Attribution (WWA) analysis covered by Carbon Brief.
In both countries, the fires destroyed vast areas of native forests and grasslands, displacing thousands of people. In Chile, the fires resulted in 23 deaths.
Multiple drivers contributed to the spread of the fires, including extended periods of high temperatures, low rainfall and abundant dry vegetation.
The WWA analysis concluded that human-caused climate change made these weather conditions at least three times more likely.
According to the researchers, another contributing factor was the invasion of non-native trees in the regions where the fires occurred.
The risk of non-native forests
In Argentina, the wildfires began on 6 January and persisted until the first week of February. They hit the city of Puerto Patriada and the Los Alerces and Lago Puelo national parks, in the Chubut province, as well as nearby regions.
In these areas, more than 45,000 hectares of native forests – such as Patagonian alerce tree, myrtle, coigüe and ñire – along with scrubland and grasslands, were consumed by the flames, according to the WWA study.
In Chile, forest fires occurred from 17 to 19 January in the Biobío, Ñuble and Araucanía regions.
The fires destroyed more than 40,000 hectares of forest and more than 20,000 hectares of non-native forest plantations, including eucalyptus and Monterey pine.
Dr Javier Grosfeld, a researcher at Argentina’s National Scientific and Technical Research Council (CONICET) in northern Patagonia, told Carbon Brief that these species, introduced to Patagonia for production purposes in the late 20th century, grow quickly and are highly flammable.
Because of this, their presence played a role in helping the fires to spread more quickly and grow larger.
However, that is no reason to “demonise” them, he stressed.
Forest management
For Grosfeld, the problem in northern Patagonia, Argentina, is a significant deficit in the management of forests and forest plantations.
This management should include pruning branches from their base and controlling the spread of non-native species, he added.
A similar situation is happening in Chile, where management of pine and eucalyptus plantations is not regulated. This means there are no “firebreaks” – gaps in vegetation – in place to prevent fire spread, Dr Gabriela Azócar, a researcher at the University of Chile’s Centre for Climate and Resilience Research (CR2), told Carbon Brief.
She noted that, although Mapuche Indigenous communities in central-south Chile are knowledgeable about native species and manage their forests, their insight and participation are not recognised in the country’s fire management and prevention policies.
Grosfeld stated:
“We are seeing the transformation of the Patagonian landscape from forest to scrubland in recent years. There is a lack of preventive forestry measures, as well as prevention and evacuation plans.”
Watch, read, listen
FUTURE FURNACE: A Guardian video explored the “unbearable experience of walking in a heatwave in the future”.
THE FUN SIDE: A Channel 4 News video covered a new wave of climate comedians who are using digital platforms such as TikTok to entertain and raise awareness.
ICE SECRETS: The BBC’s Climate Question podcast explored how scientists study ice cores to understand what the climate was like in ancient times and how to use them to inform climate projections.
Coming up
- 22-27 February: Ocean Sciences Meeting, Glasgow
- 24-26 February: Methane Mitigation Europe Summit 2026, Amsterdam, Netherlands
- 25-27 February: World Sustainable Development Summit 2026, New Delhi, India
Pick of the jobs
- The Climate Reality Project, digital specialist | Salary: $60,000-$61,200. Location: Washington DC
- Intergovernmental Panel on Climate Change (IPCC), science officer in the IPCC Working Group I Technical Support Unit | Salary: Unknown. Location: Gif-sur-Yvette, France
- Energy Transition Partnership, programme management intern | Salary: Unknown. Location: Bangkok, Thailand
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.
This is an online version of Carbon Brief’s weekly DeBriefed email newsletter. Subscribe for free here.
The post DeBriefed 20 February 2026: EU’s ‘3C’ warning | Endangerment repeal’s impact on US emissions | ‘Tree invasion’ fuelled South America’s fires appeared first on Carbon Brief.
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