Carbon dioxide (CO2) emissions from fossil fuels and cement will rise around 0.8% in 2024, reaching a record 37.4bn tonnes of CO2 (GtCO2), according to the 2024 Global Carbon Budget report by the Global Carbon Project.
This is 0.4GtCO2 higher than the previous record, set in 2023.
Total CO2 emissions – including both fossil and land-use emissions – will also set a new record at 41.6GtCO2, reflecting a growth of 2% over 2023 levels.
This is due, in part, to higher than usual land-use emissions driven by extreme wildfire activity in South America.
Despite the increase in 2024, total CO2 emissions have largely plateaued over the past decade, a sign that the world is making some modest progress tackling emissions.
But a flattening of emissions is far from what is needed to bring global emissions down to zero and stabilise global temperatures in-line with Paris Agreement goals.
The 19th edition of the Global Carbon Budget, which is published today, also reveals:
- Emissions emissions are projected to decrease significantly in the EU (down 3.8%) and slightly in the US (down 0.6%) in 2024. They are expected to increase slightly in China (up 0.2%), and increase significantly in India (up 4.6%) and the rest of the world (up 1.6%, including international shipping and aviation).
- Global emissions from coal increased by 0.2% in 2024 compared to 2023, while oil emissions increased 0.9% and gas emissions increased by 2.4%. Emissions from cement and other sources fell by 2.8%.
- Global land-use emissions clocked in at 4.2GtCO2 in 2024. This represents a 0.5GtCO2 increase over 2023 and was primarily driven by wildfire emissions linked to deforestation and forest degradation in South America. Overall, land-use emissions have decreased by around 28% since their peak in the late-1990s, with a particularly large drop in the past decade.
- While the land sink was quite weak in 2023 – leading to speculation that it may be on a path toward collapse – it appears to have largely recovered back to close to its average for the past decade.
- If global emissions remain at current levels, the remaining carbon budget to limit warming to 1.5C (with a 50% chance) will be exhausted in the next six years. Carbon budgets to limit warming to 1.7C and 2C would similarly be used up in 15 and 27 years, respectively.
- The concentration of CO2 in the atmosphere is set to reach 422.5 parts per million (ppm) in 2024, 2.8ppm above 2023 and 52% above pre-industrial levels.
Both global fossil and total CO2 emissions at record levels
The 2024 Global Carbon Budget finds that CO2 emissions from fossil use are projected to rise 0.8% in 2024, reaching a record 37.4GtCO2 – 0.4GtCO2 higher than the previous record, set last year.
Total CO2 emissions, which include land-use change, are also expected to reach record highs at 41.6GtCO2, or 2.0% above the previous record set in 2023.
This large increase was driven both by consistent growth in fossil-fuel emissions and abnormally high land-use emissions in 2024 – due in part to wildfires in South America exacerbated by a strong El Niño event and high temperatures.
Each year the Global Carbon Budget is updated to include the latest data as well as improvements to modelling sources and sinks, resulting in some year-to-year revisions to the historical record.
The figure below shows the 2024 global CO2 emissions update (dark blue solid line) alongside 2023 (grey dotted) 2022 (yellow dotted), 2021 (bright blue dotted) and 2020 (red dotted). The shaded area indicates the uncertainty around the new 2024 budget.
The 2024 figures are generally quite similar to those in the 2023 Global Carbon Budget, though they show somewhat higher emissions prior to 1980 and slightly lower emissions over the past seven years. Revisions to the data mean that 2023 is no longer a hair below 2019 levels, as was reported by Carbon Brief last year, but rather exceeds them by nearly 0.5GtCO2.
Annual total global CO2 emissions – from fossil and land-use change – between 1959 and 2024 for the 2020, 2021, 2022, 2023 and 2024 versions of the Global Carbon Project’s Global Carbon Budget, in billions of tonnes of CO2 per year (GtCO2). Shaded area shows the estimated one-sigma uncertainty for the 2024 budget. Data from the Global Carbon Project; chart by Carbon Brief.
Total global CO2 emissions have notably plateaued in the past decade (2015-24), growing at only 0.2% per year compared to the 1.9% rate of growth over the previous decade (2005-214) and the longer-term average growth rate of 1.7% between 1959 and 2014.
This apparent flattening is due to declining land-use emissions compensating for continued increases in fossil CO2 emissions. Fossil emissions grew around 0.2GtCO2 per year over the past decade, while land-use emissions decreased by a comparable amount.
However, despite the emissions plateau, there is still no sign of the rapid and deep decrease in CO2 emissions needed to reach net-zero and stabilise global temperatures in-line with Paris Agreement goals.
If global emissions remain at current levels, the remaining carbon budget to limit warming to 1.5C (with a 50% chance) will be exhausted in the next six years. Carbon budgets to limit warming to 1.7C and 2C would similarly be used up in 15 and 27 years, respectively.
Global fossil CO2 emissions also grew more slowly in the past decade (0.7% per year) compared to the previous decade (2.1%). This was driven by the continued decarbonisation of energy systems – including a shift from burning coal to gas and replacing fossil fuels with renewables – as well as slightly weaker global economic growth during the past decade.
The figure below breaks down global emissions (dark blue line) in the 2024 budget into fossil (mid blue) and land-use (light blue) components. Fossil CO2 emissions represent the bulk of total global emissions in recent years, accounting for approximately 90% of emissions in 2024 (compared to 10% for land use). This represents a large change from the first half of the 20th century, when land-use emissions were approximately the same as fossil emissions.
Global fossil emissions include CO2 emitted from burning coal, oil and gas, as well as the production of cement. However, the Global Carbon Budget also subtracts the cement carbonation sink – CO2 slowly absorbed by cement once it is exposed to the air – from fossil emissions in each year to determine total fossil emissions.
Global CO2 emissions separated out into fossil and land-use change components between 1959 and 2024 from the 2024 Global Carbon Budget. Note that fossil CO2 emissions are inclusive of the cement carbonation sink. Data from the Global Carbon Project; chart by Carbon Brief.
Global emissions can also be expressed on a per-capita basis, as shown in the figure below. While it is ultimately total global emissions that matter for the Earth’s climate – and a global per-capita figure glosses over a lot of variation among and within countries it is noteworthy that global per-capita emissions peaked in 2012 and have been slightly declining in the years since.
Global per-capita CO2 emissions between 1959 and 2024. Note that fossil CO2 emissions are inclusive of the cement carbonation sink. Data from the Global Carbon Project; chart by Carbon Brief.
Land-use emissions trending downward
Global land-use emissions stem from deforestation, degradation, loss of peatlands and harvesting trees for wood. They averaged 4GtCO2 over the past decade (2015-24) and the Global Carbon Budget provides an initial projection for 2024 of 4.2GtCO2.
This represents a 0.5GtCO2 increase over land-use emissions in 2023. This was primarily driven by wildfire emissions linked to deforestation and forest degradation in South America. Drought conditions associated with this year’s El Niño event contributed to the severity of the fires.
Overall, land-use emissions have decreased by around 28% since their peak in the late-1990s, with a particularly large drop in the past decade.
This decline is statistically significant and is due both to decreasing deforestation and increasing levels of reforestation and afforestation globally (though rates of reforestation and afforestation have largely stagnated over the past decade).
This year’s Global Carbon Budget features a number of important improvements to land-use change emissions estimates, including updated estimates of cropland and pasture area in major countries.
Four countries – Brazil, Indonesia, China and the Democratic Republic of the Congo (DRC) – collectively contribute approximately 60% of the global land-use emissions.
The figure below shows changes in emissions over time in these countries, as well as land-use emissions in the rest of the world (grey). Note that Chinese land-use emissions are negative in recent years.
Annual CO2 emissions from land-use change by major emitting countries and the rest of world over 1959-2023. Note that country-level land-use change emissions are not yet available for 2024. Data from the Global Carbon Project; chart by Carbon Brief.
Fossil CO2 in major emitting countries
Global emissions of fossil CO2 – including coal, oil, gas and cement – increased by around 0.8% in 2024, relative to 2023, with an uncertainty range of -0.3% to 1.9%. This represents a new record high and is 2.6% above the 2019 pre-Covid levels.
The figure below shows global CO2 emissions from fossil fuels, divided into emissions from major emitting countries including China (dark blue shading), India (mid blue), the US (light blue), EU (pale blue) and the remainder of the world (grey).
Annual fossil CO2 emissions by major countries and the rest of the world over 1959-2024, excluding the cement carbonation sink as national-level values are not available. Data from the Global Carbon Project; chart by Carbon Brief.
For this year, China represents 32% of global CO2 emissions. Their emissions in 2024 are projected to increase by a relatively small 0.2% (with an uncertainty range of -1.6% to +2%), driven by a small rise in emissions from coal (0.3%) and a large rise in natural gas emissions (8%). Emissions from oil are expected to decrease modestly (-0.8%), while emissions from cement are expected to fall sharply (-8.1%).
The Global Carbon Budget report suggests that Chinese oil emissions have probably already peaked, reflecting the acceleration of vehicle electrification.
India represents 8% of global emissions. In 2024, Indian emissions are projected to increase by 4.6% (with a range from 3.0% to 6.1%), with a 4.5% increase in emissions from coal, a 3.6% increase in emissions from oil, a 11.8% increase in emissions from natural gas and a 4% increase in emissions from cement.
While renewable energy is expanding quickly in India, it remains far slower than the rate of power demand growth as the economy rapidly expands.
The US represents 13% of global emissions this year – though is responsible for a much larger portion of historical emissions and associated atmospheric accumulation of CO2.
US emissions are projected to decrease by 0.6% in 2024 (ranging from -2.9% to +1.7%). This is being driven by a modest decrease in coal emissions (falling 3.5%). Oil emissions are expected to decline by a slight 0.7%, reflecting the rise of electric vehicles, while emissions from gas are expected to increase by 1%.
The EU represents 7% of global emissions. EU emissions are expected to decrease by 3.8% in 2024, driven by a 15.8% decline in coal emissions, a 1.3% decline in natural gas emissions, and a 3.5% decline in cement emissions. EU oil emissions are expected to increase slightly, by 0.2%.
The EU’s overall emissions decline is being driven by a combination of rapid clean energy adoption as well as relatively weak economic growth and high energy prices.
International aviation and shipping (included in the “rest of world” in the figure above) are responsible for 3% of global emissions. They are projected to increase by
7.8% in 2024, but remain below their 2019 pre-pandemic level by 3.5%.
The rest of the world (excluding aviation) represents 38% of global emissions. Emissions are expected to grow by 1.1% in 2024 (ranging from -1.0% to +3.3%), with increases in emissions from coal (0.5%), oil (0.5%), natural gas (2.2%) and cement (2%).
Overall, emissions are projected to decrease in the EU and US in 2024, increase slightly in China, and increase significantly in India and the rest of the world.
The total emissions for each year between 2021 and 2024, as well as the countries and regions that were responsible for the changes in absolute emissions, are shown in the figure below.
Annual emissions for 2021, 2022, 2023 and estimates for 2024 are shown by the navy blue bars. The smaller bars show the change in emissions between each set of years, broken down by country or region – the US (dark blue), EU (mid blue), China (light blue), India (pale blue) and the rest of the world (grey). Negative values show reductions in emissions, while positive values reflect emission increases.
Annual global CO2 emissions from fossil fuels (navy blue bars) and drivers of changes between years by country (smaller bars), excluding the cement carbonation sink as national-level values are not available. Negative values indicate reductions in emissions. Note that the y-axis does not start at zero. Data from the Global Carbon Project; chart by Carbon Brief.
The Global Carbon Project notes that emissions have declined over the past decade (2014-23) in 22 nations – up from 18 countries during the decade prior to that (2004-13). This decrease comes despite continued domestic economic growth and represents a long-term decoupling of CO2 emissions and the economy.
CO2 emissions decreased in Organisation for Economic Co-operation and Development (OECD) countries by 1.4% per year over the past decade, compared to a decrease of 0.9% per year in the decade prior. Non-OECD countries saw their emissions grow more slowly (1.8%) over the last decade than the prior one (4.9%).
Growth in emissions from coal, oil, and gas
Global fossil-fuel emissions primarily result from the combustion of coal, oil and natural gas. Coal is responsible for more emissions than any other fossil fuel, representing approximately 41% of global fossil CO2 emissions in 2024. Oil is the second largest contributor at 33% of fossil CO2, while gas rounds out the pack at 22%.
These percentages reflect both the amount of each fossil fuel consumed globally, but also differences in CO2 intensities. Coal results in the most CO2 emitted per unit of heat or energy produced, followed by oil and natural gas.
The figure below shows global CO2 emissions from different fuels over time, covering coal (dark blue shading), oil (mid blue) and gas (light blue), as well as cement production (pale blue) and other sources (grey).
While coal emissions increased rapidly in the mid-2000s, it has largely plateaued since 2013. However, coal use increased significantly in 2021 and then slightly in the subsequent three years.
Annual CO2 emissions by fossil fuel over 1959-2024, excluding the cement carbonation sink. Data from the Global Carbon Project; chart by Carbon Brief.
Global emissions from coal increased by 0.2% in 2024 compared to 2023, while oil emissions increased 0.9% and gas emissions increased by 2.4%. Emissions from cement and other sources fell by 3%.
Despite setting a new record this year, global coal use is only 3% above 2013 levels – a full 12 years ago. By contrast, during the 2000s, global coal use grew at a rate of around 4% every single year.
The total emissions for each year between 2021 and 2024 (navy blue bars), as well as the absolute change in emissions for each fuel between years, are shown in the figure below.
Annual global CO2 emissions from fossil fuels (navy blue bars) and drivers of changes between years by fuel, excluding the cement carbonation sink. Negative values indicate reductions in emissions. Note that the y-axis does not start at zero. Data from the Global Carbon Project; chart by Carbon Brief.
Even though they have been increasing over the past four years, global CO2 emissions from oil remain very slightly (0.8%) below the pre-pandemic highs of 2019.
The global carbon budget
Every year, the Global Carbon Project provides an estimate of the overall “global carbon budget”. This is based on estimates of the release of CO2 through human activity and its uptake by the oceans and land, with the remainder adding to atmospheric concentrations of the gas.
(This differs from the commonly used term “remaining carbon budget”, which refers to the amount of CO2 that can be released while keeping warming below global limits of 1.5 or 2C.)
The most recent budget, including estimated values for 2024, is shown in the figure below. Values above zero represent sources of CO2 – from fossil fuels and industry (dark blue shading) and land use (mid blue) – while values below zero represent “carbon sinks” that remove CO2 from the atmosphere. Any CO2 emissions that are not absorbed by the oceans (light grey) or land vegetation (mid grey) accumulate in the atmosphere (dark grey).
Annual global carbon budget of sources and sinks over 1959-2024. Fossil CO2 emissions include the cement carbonation sink. Note that the budget does not fully balance every year due to remaining uncertainties, particularly in sinks. Data from the Global Carbon Project; chart by Carbon Brief.
Over the past decade (2015-24), the world’s oceans have taken up approximately 26.5% of total human emissions, or around 10.6GtCO2 per year. The ocean CO2 sink has been relatively flat since 2016 after growing rapidly over the prior decades, reflecting the plateauing of global emissions during that period.
The land sink takes up around 29% of global emissions, or 11.5GtCO2 per year on average. While the land sink was quite weak in 2023 – leading some to speculate that it may be on a path toward collapse – it appears to have largely recovered back to close to its average level over the past decade in 2024 as El Niño conditions have faded.
Global CO2 emissions from fires were quite high in 2024, around 7GtCO2 over the first 10 months of the year and similar to the above average values in 2023.
This was driven by large emissions in North and South America, particularly in Canada and Brazil. (It is not possible to make a direct comparison between reported fire CO2 emissions and other components of the global carbon budget as they already show up in both parts of the land sink and land-use emissions.)
Overall, the impact of the ongoing emissions from human activity is that atmospheric CO2 continues to increase.
The growth rate of atmospheric CO2 in 2024 is expected to be around 2.76ppm, which is above average compared to the rate of 2.46% over the past decade (2014-23).
The 2024 rise in atmospheric CO2 concentration was the fifth largest over the 1959-2024 period, closely following 2023, 2015, 2016 and 1998 – most of which were strong El Niño years.
Atmospheric CO2 concentrations are set to reach an annual average of 422.5ppm in 2024, representing an increase of 52% above pre-industrial levels of 280ppm.
The post Analysis: Global CO2 emissions will reach new high in 2024 despite slower growth appeared first on Carbon Brief.
Analysis: Global CO2 emissions will reach new high in 2024 despite slower growth
As a treaty to protect the High Seas entered into force this month with backing from more than 80 countries, major fishing nations China, Japan and Brazil secured a last-minute seat at the table to negotiate the procedural rules, funding and other key issues ahead of the treaty’s first COP.
The Biodiversity Beyond National Jurisdiction (BBNJ) pact – known as the High Seas Treaty – was agreed in 2023. It is seen as key to achieving a global goal to protect at least 30% of the planet’s ecosystems by 2030, as it lays the legal foundation for creating international marine protected areas (MPAs) in the deep ocean. The high seas encompass two-thirds of the world’s ocean.
Last September, the treaty reached the key threshold of 60 national ratifications needed for it to enter into force – a number that has kept growing and currently stands at 83. In total, 145 countries have signed the pact, which indicates their intention to ratify it. The treaty formally took effect on January 17.
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“In a world of accelerating crises – climate change, biodiversity loss and pollution – the agreement fills a critical governance gap to secure a resilient and productive ocean for all,” UN Secretary-General António Guterres said in a statement.
Julio Cordano, Chile’s director of environment, climate change and oceans, said the treaty is “one of the most important victories of our time”. He added that the Nazca and Salas y Gómez ridge – off the coast of South America in the Pacific – could be one of the first intact biodiversity hotspots to gain protection.
Scientists have warned the ocean is losing its capacity to act as a carbon sink, as emissions and global temperatures rise. Currently, the ocean traps around 90% of the excess planetary heat building up from global warming. Marine protected areas could become a tool to restore “blue carbon sinks”, by boosting carbon absorption in the seafloor and protecting carbon-trapping organisms such as microalgae.
Last-minute ratifications
Countries that have ratified the BBNJ will now be bound by some of its rules, including a key provision requiring countries to carry out environmental impact assessments (EIA) for activities that could have an impact on the deep ocean’s biodiversity, such as fisheries.
Activities that affect the ocean floor, such as deep-sea mining, will still fall under the jurisdiction of the International Seabed Authority (ISA).
Nations are still negotiating the rules of the BBNJ’s other provisions, including creating new MPAs and sharing genetic resources from biodiversity in the deep ocean. They will meet in one last negotiating session in late March, ahead of the treaty’s first COP (conference of the parties) set to take place in late 2026 or early 2027.
China and Japan – which are major fishing nations that operate in deep waters – ratified the BBNJ in December 2025, just as the treaty was about to enter into force. Other top fishing nations on the high seas like South Korea and Spain had already ratified the BBNJ last year.
Power play: Can a defensive Europe stick with decarbonisation in Davos?
Tom Pickerell, ocean programme director at the World Resources Institute (WRI), said that while the last-minute ratifications from China, Japan and Brazil were not required for the treaty’s entry into force, they were about high-seas players ensuring they have a “seat at the table”.
“As major fishing nations and geopolitical powers, these countries recognise that upcoming BBNJ COP negotiations will shape rules affecting critical commercial sectors – from shipping and fisheries to biotechnology – and influence how governments engage with the treaty going forward,” Pickerell told Climate Home News.
Some major Western countries – including the US, Canada, Germany and the UK – have yet to ratify the treaty and unless they do, they will be left out of drafting its procedural rules. A group of 18 environmental groups urged the UK government to ratify it quickly, saying it would be a “failure of leadership” to miss the BBNJ’s first COP.
Finalising the rules
Countries will meet from March 23 to April 2 for the treaty’s last “preparatory commission” (PrepCom) session in New York, which is set to draft a proposal for the treaty’s procedural rules, among them on funding processes and where the secretariat will be hosted – with current offers coming from China in the city of Xiamen, Chile’s Valparaiso and Brussels in Belgium.
Janine Felson, a diplomat from Belize and co-chair of the “PrepCom”, told journalists in an online briefing “we’re now at a critical stage” because, with the treaty having entered into force, the preparatory commission is “pretty much a definitive moment for the agreement”.
Felson said countries will meet to “tidy up those rules that are necessary for the conference of the parties to convene” and for states to begin implementation. The first COP will adopt the rules of engagement.
She noted there are “some contentious issues” on whether the BBNJ should follow the structure of other international treaties such as the Convention on Biological Diversity (CBD), as well as differing opinions on how prescriptive its procedures should be.
“While there is this tension on how far can we be held to precedent, there is also recognition that this BBNJ agreement has quite a bit to contribute in enhancing global ocean governance,” she added.
The post Big fishing nations secure last-minute seat to write rules on deep sea conservation appeared first on Climate Home News.
Big fishing nations secure last-minute seat to write rules on deep sea conservation
The annual World Economic Forum got underway on Tuesday in the Swiss ski resort of Davos, providing a snowy stage for government and business leaders to opine on international affairs. With attention focused on the latest crisis – a potential US-European trade war over Greenland – climate change has slid down the agenda.
Despite this, a number of panels are addressing issues like electric vehicles, energy security and climate science. Keep up with top takeaways from those discussions and other climate news from Davos in our bulletin, which we’ll update throughout the day.
From oil to electrons – energy security enters a new era
Energy crises spurred by geopolitical tensions are nothing new – remember the 1970s oil shock spurred by the embargo Arab producers slapped on countries that had supported Israel during the Yom Kippur War, leading to rocketing inflation and huge economic pain.
But, a Davos panel on energy security heard, the situation has since changed. Oil now accounts for less than 30% of the world’s energy supply, down from more than 50% in 1973. This shift, combined with a supply glut, means oil is taking more of a back seat, according to International Energy Agency boss Fatih Birol.
Instead, in an “age of electricity” driven by transport and technology, energy diplomacy is more focused on key elements of that supply chain, in the form of critical minerals, natural gas and the security buffer renewables can provide. That requires new thinking, Birol added.
“Energy and geopolitics were always interwoven but I have never ever seen that the energy security risks are so multiplied,” he said. “Energy security, in my view, should be elevated to the level of national security today.”
In this context, he noted how many countries are now seeking to generate their own energy as far as possible, including from nuclear and renewables, and when doing energy deals, they are considering not only costs but also whether they can rely on partners in the long-term.
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In the case of Europe – which saw energy prices jump after sanctions on Russian gas imports in the wake of Moscow’s invasion of Ukraine – energy security rooted in homegrown supply is a top priority, European Commission President Ursula von der Leyen said in Davos on Tuesday.
Outlining the bloc’s “affordable energy action plan” in a keynote speech at the World Economic Forum, she emphasised that Europe is “massively investing in our energy security and independence” with interconnectors and grids based on domestically produced sources of power.
The EU, she said, is trying to promote nuclear and renewables as much as possible “to bring down prices and cut dependencies; to put an end to price volatility, manipulation and supply shocks,” calling for a faster transition to clean energy.
“Because homegrown, reliable, resilient and cheaper energy will drive our economic growth and deliver for Europeans and secure our independence,” she added.
Comment – Power play: Can a defensive Europe stick with decarbonisation in Davos?
AES boss calls for “more technical talk” on supply chains
Earlier, the energy security panel tackled the risks related to supply chains for clean energy and electrification, which are being partly fuelled by rising demand from data centres and electric vehicles.
The minerals and metals that are required for batteries, cables and other components are largely under the control of China, which has invested massively in extracting and processing those materials both at home and overseas. Efforts to boost energy security by breaking dependence on China will continue shaping diplomacy now and in the future, the experts noted.
Copper – a key raw material for the energy transition – is set for a 70% increase in demand over the next 25 years, said Mike Henry, CEO of mining giant BHP, with remaining deposits now harder to exploit. Prices are on an upward trend, and this offers opportunities for Latin America, a region rich in the metal, he added.
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Andrés Gluski, CEO of AES – which describes itself as “the largest US-based global power company”, generating and selling all kinds of energy to companies – said there is a lack of discussion about supply chains compared with ideological positioning on energy sources.
Instead he called for “more technical talk” about boosting battery storage to smooth out electricity supply and using existing infrastructure “smarter”. While new nuclear technologies such as small modular reactors are promising, it will be at least a decade before they can be deployed effectively, he noted.
In the meantime, with electricity demand rising rapidly, the politicisation of the debate around renewables as an energy source “makes no sense whatsoever”, he added.
The post Climate at Davos: Energy security in the geopolitical driving seat appeared first on Climate Home News.
Climate at Davos: Energy security in the geopolitical driving seat
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In six generations, Jake Christian’s family had never seen a fire like the one that blazed toward his ranch near Buffalo, Wyoming, late in the summer of 2024. Its flames towered a dozen feet in the air, consuming grassland at a terrifying speed and jumping a four-lane highway on its race northward.
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