Methane, a potent greenhouse gas, is responsible for about 30% of the global temperature increase observed since the industrial revolution.
China accounts for more than 10% of annual global human methane emissions, in large part due to unintended releases – known as “fugitive” emissions – from its energy sector.
In a recently published study, we take a closer look at China’s coal-mine methane (CMM) emissions, which account for roughly 40% of the nation’s total methane emissions.
Leveraging newly collected, mine-specific data, we develop granular estimates of CMM emissions in China since 2000.
These estimates reveal that China’s coal production is shifting towards provinces with lower-emission mines.
In addition, there has been a significant increase in the capturing of methane from coal mines for energy use.
Together, these developments have helped to limit the rise of CMM emissions, despite an overall increase in coal production since 2016.
Mine data
To estimate CMM emissions at a granular level, we needed to understand how emissions vary from one mine to the next across China.
To do this, we made use of existing safety regulations in China. As methane is a highly flammable gas, the Chinese government enforces mandatory methane gas level identification in coal mines and implements safety regulations accordingly.
Coal mines are categorised based on their “methane emission factors”, the volume of methane emitted per tonne of coal produced.
At one end are low-gas mines, with an emissions factor of less than 10 cubic metres (m3) of methane emitted per tonne of coal. At the other are high-gas mines, at more than 10m3 of methane emitted per tonne. Beyond this are “outburst” mines, which are those that have experienced coal seam or gas outburst incidents.
To get a clearer sense of how much low-gas, high-gas and outburst mines emit in practice, we built a model of the relationship between gas levels and emission factors, using a 2011 database of all Chinese coal mines.
This database includes information on methane gas levels, mine-specific emission factors, coalbed depth, mine ownership and production capacity. We further validated this relationship with newly collected coal mine data from 2023, published by Chinese local governments.
The results show that the distribution of emission factors, as shown in the figure below, varies significantly with gas level.
The top row in the figure below shows the emissions factors for a range of mines in 2011 classed as low-gas (top left, green), high-gas (top centre, pink) or outburst (top right, red). The dashed vertical lines show the central estimate for each type, ranging from 4.1m3 per tonne for low-gas mines through to 19.9m3/tonne for high-gas and 28.4m3/tonne for outburst mines.
The bottom row shows the same metrics based on the more recent 2023 data.
The strong correlation shown in the data above suggests that gas level is a crucial indicator of how much methane a coal mine emits.
In contrast, our analysis reveals no significant correlation between how much a coal mine emits and either coal mine depth or ownership.
Comparing the distributions for the same gas levels between 2011 and 2023 also shows that the link between gas levels and methane emissions remains fairly constant over time.
Therefore, the gas level of a mine can reliably serve as a proxy for its methane emissions per tonne of production, when direct measurements are unavailable.
Provincial shift
To estimate CMM emissions for each province in China, we assumed that the percentage of coal produced by mines of each gas level remains roughly constant as in 2011.
For instance, if 20% of Guizhou’s coal production in 2011 came from low-gas mines, we maintained this percentage for subsequent years.
We then calculated CMM emissions by multiplying provincial-level production-weighted emission factors by total coal production.
The line chart below illustrates our estimated CMM emissions since 2000.
The raw estimates, depicted by the lower grey dashed line, show a rapid increase in CMM emissions from approximately 5m tonnes in 2000 to nearly 21m tonnes in 2013.
This was followed by a decrease to 15m tonnes in 2016 and a subsequent rebound to 24m tonnes in 2023.
The decline between 2013 and 2016 aligns with a period of reduced coal production in China.
On the chart, the upper grey line represents CMM emissions when abandoned coal mines are included.
These mines, which continue to release methane long after operations cease, were responsible for 4.8m tonnes of methane emissions in 2020, contributing approximately 25% to the total CMM emissions.
Meanwhile, the blue line shows CMM emissions when the capture and use of methane in energy supply is taken into consideration.
National methane utilisation increased from 1.2m tonnes in 2008 to 3.7m tonnes in 2020, resulting in a reduction of total emissions by 5% and 17%, respectively.
It is noteworthy that CMM emissions did not immediately rebound after 2016, despite a reported increase in coal production by China’s National Bureau of Statistics.
This delay can likely be attributed to shifts in production locations to lower-emissions provinces, the closure of high-emissions mines and the adoption of technologies for capturing and using methane that effectively mitigate emissions.
The figure below compares CMM emissions across provinces in 2012 and 2021, two years with nearly identical total coal production levels.
Overall, changes in methane emissions closely mirrored shifts in where the coal was being mined. There is a clear geographic trend: production and emissions surged in northern and north-western regions such as Xinjiang, Shaanxi and especially Shanxi.
In fact, Shanxi alone emitted nearly 8m tonnes of coal-mine methane in 2021, making up roughly half of China’s total CMM emissions.
Meanwhile, both production and emissions dropped in south-western provinces, including Guizhou, Sichuan and Yunnan.
The figure shows that China’s coal production has switched from regions in the south-west where emissions per unit of coal production are relatively high, to lower-emission areas in the north and north-west. At the same time, total production levels have stayed similar, at just over 4bn tonnes in both 2012 and 2021.
Tackling methane
China has signalled its intention to address methane emissions, with key tasks for the next five years outlined in a national methane action plan published in 2023.
The broad trends of CMM emissions observed in this study will likely continue in China.
Small-scale coal mines – those producing less than 300,000 tonnes of coal per year – are at risk of closing or being consolidated, while increased production from large-scale, lower-emission mines in Xinjiang and Inner Mongolia will likely lead to an overall reduction in national production-weighted emission factors.
(This reduction in the rate of emissions per unit of coal production does not guarantee a reduction in methane emissions overall, as several analyses show this also depends on the total coal output. Even following closures, methane may still leak from abandoned mines.)
However, this regional shift in coal production – and, thus, methane emissions – could also help to address public health concerns from pollution associated with the gas.
The Chinese government has also introduced significant changes in policy on the capturing and use of methane gas. The Ministry of Ecology and Environment recently revised coal-mine methane standardsto mandate the capture and use of methane with concentrations above 8%, down from a previous 30%.
In addition, the government has a programme providing financial incentives for capturing methane and reducing CMM emissions.
Together, these measures could help China achieve its short- and medium-run methane capture and use goals set by the methane action plan.
The post Guest post: How changes to coal mining have affected China’s methane emissions appeared first on Carbon Brief.
Guest post: How changes to coal mining have affected China’s methane emissions
The Turkish government and the International Renewable Energy Agency have called for a stronger global push to run vehicles, industry and buildings on electricity rather than fossil fuels, ahead of this year’s COP31 climate talks.
COP31 President Murat Kurum told the Copenhagen Climate Ministerial on Wednesday that governments should be “decarbonising the way we generate electricity, but also expanding electrification into every sphere of life”.
“We must make the technologies of the future accessible at scale – and we must ensure that no one is left behind,” he told the gathering of climate diplomats and ministers from around 40 countries in the Danish capital.
Kurum said that the percentage of final energy consumption which is met by electricity – the key metric of electrification, which is currently around 20% globally – should be increased “as much as we possibly can”.
The head of the International Renewable Energy Agency (IRENA), Francesco La Camera, also addressed the Copenhagen gathering. While his comments to ministers were not public, IRENA released a statement ahead of the talks calling for a goal to increase electricity’s share of final energy consumption to 35% by 2035.
The two officials did not reference the war with Iran and the price hikes in oil and gas as a result of related supply disruptions, but UN and other leaders have used this as an argument in favour of transitioning away from planet-heating fossil fuels towards clean, domestically produced renewables.
35 by 35 goal
“The world must adapt to a new energy reality,” La Camera said in the IRENA statement. “Beyond the goals of tripling renewables and doubling energy efficiency [by 2030] lies the wider challenge of transforming entire energy systems and reducing fossil fuel use across supply and demand. Electrification and fossil fuel phase-out are inseparable and must advance together.”
He said electrification, which can be achieved through technologies like electric heat pumps, vehicles and cookers, will reduce greenhouse gas emissions, enhance energy security and bolster economic competitiveness.
A new “transitioning away from fossil fuels” roadmap released by IRENA says this 35% by 2035 electrification goal is vital if the world is to “remain” on a pathway to limit global warming to 1.5C. Electrification should reach at least 50% by 2050, it adds.
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To enable this goal to be met, the amount of money invested in power grids each year should double from $0.5 trillion in 2025 to around $1 trillion each year until 2035. Significant investment in electricity storage and demand flexibility is also needed, the roadmap says.
Clémence Dubois, campaigns manager for green group 350.org, welcomed Kurum’s remarks but added that electrification and energy justice should be funded through large developed countries taxing the windfall profits of fossil fuel companies.
Collective goal or coalition?
It is not yet clear whether the Turkish government, or the Australian government which is tasked with leading the COP31 negotiations, will attempt to get all countries to agree to an electrification goal at November’s climate summit in Antalya.
If so, such a goal could be collectively endorsed by all nations in a COP decision, as with the COP28 targets to triple renewables capacity and double the rate of growth in energy efficiency, both by 2030. Where there is narrower support, other goals have been voluntarily launched at COPs, backed by coalitions of countries, including pledges to boost nuclear energy, biofuels and grid investment.
A source with knowledge of Türkiye’s priorities confirmed that electrification is important to the COP31 host, alongside energy storage, energy security, clean cooking and resilient and clean energy systems.
The post Electrification emerges as Turkish COP31 priority appeared first on Climate Home News.
Climate Change
Cropped 20 May 2026: Deforestation roadmap | Melanesian Ocean Summit | Returning pet parrots to the wild
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
Deforestation talks
COP30 ROADMAP: Brazil’s global roadmap away from deforestation will involve countries producing their own voluntary pathways to halt and reverse forest loss by 2030, according to a first outline covered by Climate Home News. At the COP30 climate talks in Belém last year, some 93 countries called for a deforestation “roadmap” to be part of the summit’s formal outcomes. Despite this, countries failed to agree to one – leading host nation Brazil to promise to bring forward a voluntary roadmap as a compromise.
FOREST FORUM: Speaking at the UN Forum on Forests earlier this month, Juliano Assunção, an advisor to the COP30 presidency on deforestation, presented a first outline of the roadmap, said Climate Home News. According to the publication, Assunção said the roadmap “will not prescribe a single model”, but would instead invite countries to convert their pledges “into forest roadmaps grounded on regional and national diagnosis”. Elsewhere at the forum, Indonesia announced carbon-offsetting plans involving the restoration of 12m hectares of degraded land, said Reuters.
GOALS REPORT: Amid the talks, the UN published its latest assessment on achieving six global forest goals for 2017-30, concluding that “progress is evident, but insufficient”. Down to Earth reported that, according to the report, the world remains off track on two of the “key” targets: ending deforestation and eliminating extreme poverty among forest-dependent populations. Sustainability magazine reported that the goals set a target of increasing global forest area by 3% by 2030, but that, in reality, forest area has declined by more than 40m hectares since 2015.
Melanesian Ocean Summit
SEA SOLIDARITY: The leaders of Papua New Guinea, Fiji and Vanuatu signed a declaration to establish the Melanesian Ocean Corridor of Reserves, reported the Pacific Islands News Association. The corridor will “establish joint border governance, enforcement and marine science frameworks” across five Pacific nations and territories, said the outlet. Vanuatu’s prime minister, Jotham Napat, told the Melanesian Ocean Summit that the corridor “reminds us that our solidarity, not the legacy of colonial rule, determines our future”, according to Vanuatu’s Daily Post.
SEA SOVEREIGNTY: Part of the Melanesian corridor is a new marine protected area the size of the UK, announced by Papua New Guinea at the summit, said Oceanographic magazine. The new MPA will “prohibit all fishing within its boundaries”, reported the outlet. Meanwhile, Tuvalu’s Post Courier reported that the country is “currently developing its first-ever national-security policy, which will place maritime conservation and management at the absolute centre of the country’s strategic architecture”. Prime minister Feleti Teo stated: “The ocean is our sovereignty.”
CONSIDER THE OCEAN: In a comment article in the journal npj Ocean Sustainability, Dr Carlos García-Soto from the Spanish National Research Council wrote that there is a “structural weakness” in UN climate processes. He noted that the final decision text from COP30 “omitted the ocean entirely”, despite the summit “deliver[ing] the strongest ocean-related initiatives ever presented at a UN climate conference”. García-Soto also outlined five key priorities for integrating ocean considerations into climate governance.
News and views
- CANADA OWN GOAL: The Canadian government has no plans to enshrine into law commitments meant to ensure the nation meets its international nature goals, despite hosting the pivotal COP15 biodiversity summit less than four years ago, said CBC News.
- CREDIT CHANGE: Brazil’s national monetary council has postponed a regulation that would have blocked farms involved in deforestation from receiving rural credits, reported Folha de São Paulo. The change occurs “following pressure from agribusiness groups to relax the rules”, said the outlet, and means the requirement will now not take effect until January 2027.
- SAND CRISIS: A growing global appetite for sand is outstripping demand and threatening ecosystems, according to a new UN report covered by Reuters.
- LAOS DAMMED: A natural world heritage site in northern Laos is being put at risk by a $3.5bn dam project, reported Nikkei Asia.
- RAPID RESPONSE: The European Commission released its fertiliser action plan to “provide rapid support to farmers…and prevent rising food prices” amid the conflict in the Middle East, said Agenzia Nova.
- MARSH REVIVAL: Rising water levels are “beginning to revive” southern Iraq’s Cibayish marshes following a years-long drought and “drawing buffalo herders and fishermen back to areas once abandoned”, said Reuters. The country’s water ministry was able to “release growing volumes” of water from reservoirs following heavy winter rains, added the newswire.
Spotlight
Returning pet parrots to the wild
This week, Carbon Brief visits a conservation project working to return former pet parrots to the wild in Colombia.
Beautiful feathers. The playfulness and intellect of a small child. On occasion, the ability to partake in some pleasant conversation.
Parrots have captured the attention of humans for centuries. But their unique qualities have also contributed to their decline in the wild.
Some 16m parrots were moved across borders to be sold as pets over 1975-2016, according to one study, making them the most internationally traded bird in the world.
In Colombia, the world’s most biodiverse country by area, the introduction of tougher laws in 2016 means keeping a wild animal as a pet is now viewed as a “crime against the environment”, punishable with monetary fines.
These stricter rules led to greater numbers of wild parrots being seized by the police and more people giving up their birds voluntarily.
But this clampdown created a new conundrum: What will the Colombian authorities do with their growing population of these, formerly pet, parrots?
A charity called Fundación Loros – “Parrot Foundation” in English – hopes to have the answer.
Parrot rehabilitation
The foundation is based on 33 hectares of tropical dry forest in Bolívar – around a 40-minute car ride from the popular tourist city of Cartagena on Colombia’s Caribbean coast.
The deafening screeches of parrots when entering through the site’s gates were impossible to ignore.
Inside, foundation guide Corina walked Carbon Brief through the various stages of pet parrot rehabilitation.
Former pet parrots that are released directly into the wild are unlikely to survive. This is because they often lack the necessary skills, such as how to find food or stay away from predators, including monkeys and coatis.
Parrots arriving at the foundation follow a seven-stage process.
First, they are checked over by a vet and given a tag, so they can be continuously monitored.
Following this, they are kept in a large enclosure and slowly reintroduced to the types of food they might encounter in the wild, including wild fruits and nuts.
After this, they undergo “flight training” – many of the parrots will have been kept in a small cage and never learned how to travel long distances. This involves workers encouraging the birds to fly greater distances in exchange for rewards.
They also join other birds for “flock cohesion” lessons. In the wild, parrots are highly social animals who rely on their group to survive and raise chicks.
Following these steps, parrots are taken deeper into the foundation’s forest reserve – away from loggers and poachers.
There, they spend some time in an enclosure getting acquainted with their new surroundings.
After this, the door to the cage is opened – allowing them to fly free, but return for shelter and food if they need. Eventually, the birds settle back into the wild.
Waiting list
In addition to their parrot rehabilitation programme, the charity built a series of nest boxes and installed them high in the tree canopy across the reserve.
Their continuous monitoring of the birds has shown that many of the former pets have started raising wild chicks.
The work is hugely rewarding, said Corina, but the charity currently has a waiting list that is “months long”, given the growing number of wild animals needing rehabilitation across Colombia.
Despite helping the authorities with their wild animal problem, the charity largely relies on private donations to continue, she said. The hope is to develop an eco-tourism model to make more revenue in the future, she added.
Watch, read, listen
CARBON CONSULTATIONS: The Diplomat explored whether local residents were properly consulted on a carbon-offsetting programme in Cambodia.
FISH FIGHTS: The Ghanaian Times examined the tensions surrounding marine conservation in the country and how it is unduly burdening small-scale fisherfolk.
DELTA WORK: Mongabay reported on how the world’s “great deltas” are sinking, leading to the loss of a “global food system”.
LITHUANIA PEAT BOGS: The New York Times reported on Lithuanian efforts to restore peat bogs in order to “reinforce the border” and “lock away” carbon.
New science
- Coastal marshes are encroaching on uplands “nearly twice as fast” on agricultural land as they are on forestland, suggesting that agricultural practices are “accelerat[ing] the impacts of saltwater intrusion” | Nature Sustainability
- Fungi that cause diseases in plants will approximately double in abundance around the Antarctic Peninsula by 2100 under a moderate emissions scenario | Global Change Biology
- Conserving Ethiopia’s protected areas currently involves managing “trade-offs between nature and people” that are “central to whether global biodiversity commitments can be delivered” | Nature Ecology and Evolution
In the diary
- 20-22 May: Informal consultations of parties to the UN Fish Stocks Agreement | New York City
- 30 May-6 June: Meeting of the Global Environment Facility Assembly | Samarkand, Uzbekistan
- 31 May: Colombian presidential elections
- 8-18 June:Subsidiary body meetings of the UNFCCC | Bonn, Germany
Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne and Orla Dwyer. Please send tips and feedback to cropped@carbonbrief.org
The post Cropped 20 May 2026: Deforestation roadmap | Melanesian Ocean Summit | Returning pet parrots to the wild appeared first on Carbon Brief.
Climate Change
Prescribed Burns and Forest Thinning Averted Millions of Tons of Emissions and Billions in Damages
In addition to preventing an estimated 2.7 million tons of carbon emissions and $2.8 billion in damages, UC Davis researchers determined that fuel treatments prevented nearly 60 premature deaths.
Work to reduce excess flammable vegetation in forests warded off the release of 2.7 million tons of carbon dioxide, averted nearly 60 premature deaths and avoided $2.8 billion in damages in the Western U.S., according to a new study from the University of California, Davis.
Prescribed Burns and Forest Thinning Averted Millions of Tons of Emissions and Billions in Damages
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