More than 65,000 delegates have registered to attend the COP29 climate summit in Baku, Azerbaijan, potentially making it the second-largest COP on record.
This total is more than 15,000 lower than the record-breaking COP in Dubai last year – and marks the first time in seven years that a COP is not larger than its predecessor.
The figures are released amid reports that numerous world and industry leaders are skipping the summit, while Papua New Guinea has pulled its delegation out entirely.
Nonetheless, the size of the Baku summit still likely outstrips major COPs of the past, including Copenhagen, Paris and Glasgow.
COP29 host Azerbaijan has the largest delegation at the summit, with 2,229 people registered for badges. This is followed by Brazil (1,914) and Turkey (1,862) with the second and third-largest delegations, respectively.
The United Arab Emirates (UAE), hosts of COP28 in Dubai, has the fourth-largest delegation (1,011) and China (969) has the fifth.
While China’s delegation is smaller than at COP28 (when it was 1,296), both summits have seen a much larger presence for the country. For the 10 COPs before COP28, China’s average delegation of named participants was around 100 people.
All aboard to Baku
COP28 in Dubai last year was the largest COP in an almost 30-year history of summits – by some distance. More than 83,000 people attended the summit in person, beating the previous record of around 50,000 set in Sharm El-Sheikh in Egypt the year before.
The total number of registered delegates for COP29 in Baku clocks in at 66,778 – falling between the totals of the previous two COPs. With 3,975 “virtual” participants, this takes the overall provisional delegate total for COP29 to more than 70,000.
As the chart below shows, this bucks the recent trend that has seen the size of COPs increase every year since the 16,000 participants that travelled to Bonn, Germany, for COP23 in 2017.
It is worth noting that these are provisional figures, based on the delegates that have registered for the summit. The UNFCCC will release the final figures – based on participants collecting a physical badge at the venue – after the summit has closed.
Overall totals for delegates from parties, observers and the media for all COPs, as published by the UNFCCC (see this article for more details on the data). Data for COPs 1-28 are the “final” figures, while COP29 data is “provisional”. Chart by Carbon Brief.
This group adds up to 17,680 delegates – second only to COP28 in Dubai.
At last year’s COP, the participant lists published by the United Nations Framework Convention on Climate Change (UNFCCC) – for the first time – named every single person that had registered for the summit (excluding support staff). Previously, COPs have typically included thousands of “overflow” participants in which countries and UN agencies could nominate delegates without their names appearing on their official lists.
The Baku summit continues this more transparent approach, providing spreadsheets that name all participants.
For consistency with Carbon Brief’s analysis of previous COPs, the above chart includes overflow delegates as a single group. However, the participant lists do divide the overflow delegates between parties and observer groups. Including the overflow numbers takes the total for party representatives to 33,158.
The next-largest group is that of observers from non-governmental organisations (NGOs), which totals 9,881 delegates. This is the third-largest total in COP history (after the previous two COPs).
Along with the NGOs, there are several other groups that fall into the category of “observer organisations” – such as those participants representing UN bodies, intergovernmental organisations, other agencies and business representatives. These total 2,377 registered delegates – or 3,204 when overflow badges are included.
Finally, 3,575 media delegates have registered for COP29, a provisional total that is second only to COP3 in Kyoto in 1997.
Host lead
As is common at COP summits, the largest delegation at COP29 represents the host country. Azerbaijan has registered a delegation – including party overflow badges – of 2,229.
This is a far cry from Azerbaijan’s tiny delegations of the past. Before COP28 in Dubai, Azerbaijan’s delegation amounted to an average of six people.
The second-largest delegation comes from Brazil with 1,914 participants. Brazil typically brings one of the largest delegations and this year is no exception. A substantial delegation from Brazil was also likely considering they will be hosting COP30 next year.
(It is worth noting that some countries allocate some of their party badges to NGOs, which can artificially inflate the size of their official delegation.)
The third-largest delegation comes from Turkey (1,892), followed by UAE (1,011) and China (969). The rest of the top 10 comprises Russia (900), Indonesia (810), Nigeria (634), Japan (595) and Kazakhstan (478).
Just outside the top 10 is the UK in 11th (470), as well as the US (405) in 16th and Australia (394) in 19th.
Azerbaijan has seen the biggest increase in delegation size since COP28, increasing by 995 people. This is followed by Turkey (966 more) and Russia (448).
The smallest delegations belong to Niger and San Marino (two), Nicaragua (three), and Andorra and North Korea (five).
Unsurprisingly, the largest decrease in delegation size is for UEA (dropping by 3,148). Next is India (909) and France (649), while the US delegation has shrunk by 434.
Papua New Guinea has registered a delegation of 28, although prime minister James Marape announced back in August that the country would not be attending to “signal our protest at the big nations…for their lack of quick support to those who are victims of climate change, and those of us who are forest and ocean nations”.
Also, according to the provisional participant lists, Afghanistan has not registered a delegation. However, reports earlier this week suggested that Taliban officials will attend as observers. Therefore, their invitation from COP hosts Azerbaijan may have come outside the usual registration process.
The map and table below present the delegation size – split between party and overflow badges – for all the countries registered for COP29. The darker the shading, the more delegates that country has signed up. Use the search box to find the data for a specific party.
Gender split
The UNFCCC’s participant lists typically provide a title – such as Mr, Ms, Sr or Sra – for each registered delegate. In the past, this has allowed Carbon Brief to work out the balance of men to women in the delegations that each country has sent to a COP.
(This analysis always carries the caveat that the titles are designated by UNFCCC and not by Carbon Brief. In addition, Carbon Brief recognises that gender is not best categorised using a binary “male” or “female” label and appreciates that the UNFCCC’s lists may not be wholly accurate.)
However, since COP28 last year, the UNFCCC has started using other titles that do not indicate gender – such as Dr, Prof, Ambassador and Honourable. Therefore, for this analysis, these non-gendered titles – which make up around 150 names of more than 17,000 in the list of party delegates – have not been included.
This gives an average gender balance of party delegations of 60% male to 40% female.
As the chart below shows, this makes COP29 the most balanced COP in history. (Note that, for consistency, the COP28 and COP29 figures only include those on party badges, not overflow ones.
The average size of named party delegations (not including overflows) for each COP, divided by male (orange) and female (purple) participants. The lines show what percentage of the average delegation is male (orange) and female (purple). Data for COPs 1-28 collated from “final” participant lists published by the UNFCCC, while COP29 data is based on the “provisional” list. Note that 145 delegates in the COP29 provisional list are not included because there is no information on their gender. Chart by Carbon Brief.
There are two all-male party delegations this year – North Korea (five delegates) and Niger (two delegates).
In addition, this year, Carbon Brief’s analysis reveals that the gender balance across all registered delegates – both in-person and virtual – for COP29 is 59% male to 41% female.
The full list of COP29 party delegation sizes can be found here.
The post Analysis: Which countries have sent the most delegates to COP29? appeared first on Carbon Brief.
Analysis: Which countries have sent the most delegates to COP29?
Climate Change
DeBriefed 15 August 2025: Raging wildfires; Xi’s priorities; Factchecking the Trump climate report
Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Blazing heat hits Europe
FANNING THE FLAMES: Wildfires “fanned by a heatwave and strong winds” caused havoc across southern Europe, Reuters reported. It added: “Fire has affected nearly 440,000 hectares (1,700 square miles) in the eurozone so far in 2025, double the average for the same period of the year since 2006.” Extreme heat is “breaking temperature records across Europe”, the Guardian said, with several countries reporting readings of around 40C.
HUMAN TOLL: At least three people have died in the wildfires erupting across Spain, Turkey and Albania, France24 said, adding that the fires have “displaced thousands in Greece and Albania”. Le Monde reported that a child in Italy “died of heatstroke”, while thousands were evacuated from Spain and firefighters “battled three large wildfires” in Portugal.
UK WILDFIRE RISK: The UK saw temperatures as high as 33.4C this week as England “entered its fourth heatwave”, BBC News said. The high heat is causing “nationally significant” water shortfalls, it added, “hitting farms, damaging wildlife and increasing wildfires”. The Daily Mirror noted that these conditions “could last until mid-autumn”. Scientists warn the UK faces possible “firewaves” due to climate change, BBC News also reported.
Around the world
- GRID PRESSURES: Iraq suffered a “near nationwide blackout” as elevated power demand – due to extreme temperatures of around 50C – triggered a transmission line failure, Bloomberg reported.
- ‘DIRE’ DOWN UNDER: The Australian government is keeping a climate risk assessment that contains “dire” implications for the continent “under wraps”, the Australian Financial Review said.
- EXTREME RAINFALL: Mexico City is “seeing one of its heaviest rainy seasons in years”, the Washington Post said. Downpours in the Japanese island of Kyushu “caused flooding and mudslides”, according to Politico. In Kashmir, flash floods killed 56 and left “scores missing”, the Associated Press said.
- SOUTH-SOUTH COOPERATION: China and Brazil agreed to “ensure the success” of COP30 in a recent phone call, Chinese state news agency Xinhua reported.
- PLASTIC ‘DEADLOCK’: Talks on a plastic pollution treaty have failed again at a summit in Geneva, according to the Guardian, with countries “deadlocked” on whether it should include “curbs on production and toxic chemicals”.
15
The number of times by which the most ethnically-diverse areas in England are more likely to experience extreme heat than its “least diverse” areas, according to new analysis by Carbon Brief.
Latest climate research
- As many as 13 minerals critical for low-carbon energy may face shortages under 2C pathways | Nature Climate Change
- A “scoping review” examined the impact of climate change on poor sexual and reproductive health and rights in sub-Saharan Africa | PLOS One
- A UK university cut the carbon footprint of its weekly canteen menu by 31% “without students noticing” | Nature Food
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured
Factchecking Trump’s climate report
A report commissioned by the US government to justify rolling back climate regulations contains “at least 100 false or misleading statements”, according to a Carbon Brief factcheck involving dozens of leading climate scientists. The report, compiled in two months by five hand-picked researchers, inaccurately claims that “CO2-induced warming might be less damaging economically than commonly believed” and misleadingly states that “excessively aggressive [emissions] mitigation policies could prove more detrimental than beneficial”80
Spotlight
Does Xi Jinping care about climate change?
This week, Carbon Brief unpacks new research on Chinese president Xi Jinping’s policy priorities.
On this day in 2005, Xi Jinping, a local official in eastern China, made an unplanned speech when touring a small village – a rare occurrence in China’s highly-choreographed political culture.
In it, he observed that “lucid waters and lush mountains are mountains of silver and gold” – that is, the environment cannot be sacrificed for the sake of growth.
(The full text of the speech is not available, although Xi discussed the concept in a brief newspaper column – see below – a few days later.)
In a time where most government officials were laser-focused on delivering economic growth, this message was highly unusual.
Forward-thinking on environment
As a local official in the early 2000s, Xi endorsed the concept of “green GDP”, which integrates the value of natural resources and the environment into GDP calculations.
He also penned a regular newspaper column, 22 of which discussed environmental protection – although “climate change” was never mentioned.
This focus carried over to China’s national agenda when Xi became president.
New research from the Asia Society Policy Institute tracked policies in which Xi is reported by state media to have “personally” taken action.
It found that environmental protection is one of six topics in which he is often said to have directly steered policymaking.
Such policies include guidelines to build a “Beautiful China”, the creation of an environmental protection inspection team and the “three-north shelterbelt” afforestation programme.
“It’s important to know what Xi’s priorities are because the top leader wields outsized influence in the Chinese political system,” Neil Thomas, Asia Society Policy Institute fellow and report co-author, told Carbon Brief.
Local policymakers are “more likely” to invest resources in addressing policies they know have Xi’s attention, to increase their chances for promotion, he added.
What about climate and energy?
However, the research noted, climate and energy policies have not been publicised as bearing Xi’s personal touch.
“I think Xi prioritises environmental protection more than climate change because reducing pollution is an issue of social stability,” Thomas said, noting that “smoggy skies and polluted rivers” were more visible and more likely to trigger civil society pushback than gradual temperature increases.
The paper also said topics might not be linked to Xi personally when they are “too technical” or “politically sensitive”.
For example, Xi’s landmark decision for China to achieve carbon neutrality by 2060 is widely reported as having only been made after climate modelling – facilitated by former climate envoy Xie Zhenhua – showed that this goal was achievable.
Prior to this, Xi had never spoken publicly about carbon neutrality.
Prof Alex Wang, a University of California, Los Angeles professor of law not involved in the research, noted that emphasising Xi’s personal attention may signal “top” political priorities, but not necessarily Xi’s “personal interests”.
By not emphasising climate, he said, Xi may be trying to avoid “pushing the system to overprioritise climate to the exclusion of the other priorities”.
There are other ways to know where climate ranks on the policy agenda, Thomas noted:
“Climate watchers should look at what Xi says, what Xi does and what policies Xi authorises in the name of the ‘central committee’. Is Xi talking more about climate? Is Xi establishing institutions and convening meetings that focus on climate? Is climate becoming a more prominent theme in top-level documents?”
Watch, read, listen
TRUMP EFFECT: The Columbia Energy Exchange podcast examined how pressure from US tariffs could affect India’s clean energy transition.
NAMIBIAN ‘DESTRUCTION’: The National Observer investigated the failure to address “human rights abuses and environmental destruction” claims against a Canadian oil company in Namibia.
‘RED AI’: The Network for the Digital Economy and the Environment studied the state of current research on “Red AI”, or the “negative environmental implications of AI”.
Coming up
- 17 August: Bolivian general elections
- 18-29 August: Preparatory talks on the entry into force of the “High Seas Treaty”, New York
- 18-22 August: Y20 Summit, Johannesburg
- 21 August: Advancing the “Africa clean air programme” through Africa-Asia collaboration, Yokohama
Pick of the jobs
- Lancaster Environment Centre, senior research associate: JUST Centre | Salary: £39,355-£45,413. Location: Lancaster, UK
- Environmental Justice Foundation, communications and media officer, Francophone Africa | Salary: XOF600,000-XOF800,000. Location: Dakar, Senegal
- Politico, energy & climate editor | Salary: Unknown. Location: Brussels, Belgium
- EnviroCatalysts, meteorologist | Salary: Unknown. Location: New Delhi, India
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 15 August 2025: Raging wildfires; Xi’s priorities; Factchecking the Trump climate report appeared first on Carbon Brief.
DeBriefed 15 August 2025: Raging wildfires; Xi’s priorities; Factchecking the Trump climate report
Climate Change
New York Already Denied Permits to These Gas Pipelines. Under Trump, They Could Get Greenlit
The specter of a “gas-for-wind” compromise between the governor and the White House is drawing the ire of residents as a deadline looms.
Hundreds of New Yorkers rallied against new natural gas pipelines in their state as a deadline loomed for the public to comment on a revived proposal to expand the gas pipeline that supplies downstate New York.
New York Already Denied Permits to These Gas Pipelines. Under Trump, They Could Get Greenlit
A “critical assessment” report commissioned by the Trump administration to justify a rollback of US climate regulations contains at least 100 false or misleading statements, according to a Carbon Brief factcheck involving dozens of leading climate scientists.
The report – “A critical review of impacts of greenhouse gas emissions on the US climate” – was published by the US Department of Energy (DoE) on 23 July, just days before the government laid out plans to revoke a scientific finding used as the legal basis for emissions regulation.
The executive summary of the controversial report inaccurately claims that “CO2-induced warming might be less damaging economically than commonly believed”.
It also states misleadingly that “excessively aggressive [emissions] mitigation policies could prove more detrimental than beneficial”.
Compiled in just two months by five “independent” researchers hand-selected by the climate-sceptic US secretary of energy Chris Wright, the document has sparked fierce criticism from climate scientists, who have pointed to factual errors, misrepresentation of research, messy citations and the cherry-picking of data.
Experts have also noted the authors’ track record of promoting views at odds with the mainstream understanding of climate science.
Wright’s department claims the report – which is currently open to public comment as part of a 30-day review – underwent an “internal peer-review period amongst [the] DoE’s scientific research community”.
The report is designed to provide a scientific underpinning to one flank of the Trump administration’s plans to rescind a finding that serves as the legal prerequisite for federal emissions regulation. (The second flank is about legal authority to regulate emissions.)
The “endangerment finding” – enacted by the Obama administration in 2009 – states that six greenhouse gases are contributing to the net-negative impacts of climate change and, thus, put the public in danger.
In a press release on 29 July, the US Environmental Protection Agency said “updated studies and information” set out in the new report would “challenge the assumptions” of the 2009 finding.
Carbon Brief asked a wide range of climate scientists, including those cited in the “critical review” itself, to factcheck the report’s various claims and statements.
The post Factcheck: Trump’s climate report includes more than 100 false or misleading claims appeared first on Carbon Brief.
https://www.carbonbrief.org/factcheck-trumps-climate-report-includes-more-than-100-false-or-misleading-claims/
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