- What timeline options were delegates debating?
- How did the timeline discussions unfold?
- What were the main points of disagreement?
- Why is the IPCC in a ‘serious funding crisis’?
- How have scientists reacted?
- What other issues remain unresolved?
- How are the IPCC AR7 reports progressing?
- How might the IPCC use AI and enhance gender inclusivity?

Do you know the impact of carbon dioxide on climate change?
It’s crucial for you to understand how this gas traps heat and contributes to the greenhouse effect.
The burning of fossil fuels and deforestation are major sources of carbon dioxide emissions.
As you read on, we will explore the carbon cycle and its role in this complex issue.
Arm yourself with knowledge to better comprehend the relationship between carbon dioxide and climate change.
Key Takeaways
- Carbon dioxide is a greenhouse gas that absorbs and emits heat energy, contributing to the greenhouse effect.
- Burning fossil fuels and deforestation are human activities that intensify the greenhouse effect by releasing carbon dioxide into the atmosphere.
- Approximately 90% of human-made carbon dioxide emissions come from burning fossil fuels.
- Deforestation is responsible for about 10% of global carbon dioxide emissions, as trees act as carbon sinks and their removal releases stored carbon back into the atmosphere.
Trapping Heat
To understand the impact of carbon dioxide on climate change, you need to know how it traps heat.

Carbon dioxide is a greenhouse gas, meaning it has the ability to absorb and emit heat energy.
When sunlight reaches the Earth’s surface, it warms the planet. Some of this heat is then radiated back into space, while the rest is trapped by greenhouse gases like carbon dioxide.
As carbon dioxide levels increase in the atmosphere, more heat is trapped, leading to a phenomenon known as the greenhouse effect. This effect causes the Earth’s temperature to rise, resulting in climate change.
The increased concentration of carbon dioxide in the atmosphere, primarily due to human activities such as burning fossil fuels, is amplifying this greenhouse effect and contributing to global warming.
Greenhouse Effect
As carbon dioxide levels increase in the atmosphere, it traps more heat, leading to the greenhouse effect. This phenomenon occurs when certain gases, such as carbon dioxide, methane, and water vapor, absorb and re-emit infrared radiation from the Earth’s surface. These gases act like a blanket, trapping heat and preventing it from escaping back into space.
As a result, the Earth’s temperature rises, causing changes in climate patterns and weather conditions. The greenhouse effect is a natural process that has been occurring for millions of years, keeping the planet warm enough to support life. However, human activities, such as burning fossil fuels and deforestation, have significantly increased the concentration of greenhouse gases in the atmosphere, intensifying the greenhouse effect and contributing to global warming.
Fossil Fuel Combustion
Burning fossil fuels releases large amounts of carbon dioxide into the atmosphere, exacerbating the greenhouse effect and amplifying climate change. Fossil fuel combustion is the process of burning coal, oil, and natural gas to produce energy for various purposes, such as electricity generation, transportation, and industrial processes.

When these fuels are burned, carbon dioxide is released as a byproduct. This carbon dioxide then accumulates in the atmosphere, trapping heat and contributing to the warming of the planet. It’s estimated that about 90% of human-made carbon dioxide emissions come from the burning of fossil fuels.
As a result, reducing our dependence on these fuels and transitioning to cleaner energy sources is crucial in mitigating the impacts of climate change.
Deforestation
When it comes to addressing the issue of deforestation, you need to be aware of the significant role it plays in contributing to carbon dioxide emissions and exacerbating climate change.
Deforestation is the clearing of forests for purposes such as agriculture, logging, or urbanization. Trees act as carbon sinks, meaning they absorb carbon dioxide from the atmosphere and store it in their biomass.
When forests are cut down, the stored carbon is released back into the atmosphere as carbon dioxide, contributing to greenhouse gas emissions. In fact, deforestation is responsible for about 10% of global carbon dioxide emissions.
Additionally, forests also play a crucial role in regulating the climate by influencing rainfall patterns and maintaining biodiversity.
Thus, addressing deforestation is essential in mitigating climate change and preserving the health of our planet.

Carbon Cycle
To understand the impact of deforestation on carbon dioxide emissions and climate change, it’s crucial to delve into the carbon cycle. The carbon cycle is the process by which carbon moves between the atmosphere, land, and oceans. It’s a natural and necessary process that helps regulate the Earth’s climate.
Carbon dioxide, a greenhouse gas, plays a significant role in the carbon cycle. Plants absorb carbon dioxide from the atmosphere through photosynthesis, converting it into organic matter. When plants die and decompose, or when forests are burned, carbon is released back into the atmosphere as carbon dioxide.
Deforestation disrupts this cycle by eliminating the trees that absorb carbon dioxide, leading to an increase in atmospheric carbon dioxide levels and contributing to climate change. Therefore, understanding and protecting the carbon cycle is crucial for mitigating the effects of deforestation on climate change.
Conclusion
So there you have it, now you know the basics about carbon dioxide and its role in climate change.
It traps heat, contributes to the greenhouse effect, and is primarily emitted through fossil fuel combustion and deforestation.
Understanding the carbon cycle is key to addressing this issue.
By reducing our carbon emissions and promoting sustainable practices, we can work towards mitigating the impacts of climate change and preserving our planet for future generations.

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Climate Change
Paris Agreement committee names three countries snubbing it over NDCs
Three countries have been named by the Paris Agreement’s compliance committee for failing to submit a nationally determined contribution (NDC) and repeatedly snubbing offers of help with their climate plans.
After months of internal debate over whether to identify serial non-responders, the Paris Agreement’s Implementation and Compliance Committee (PAICC) named the three countries which have failed to engage with it over their NDCs on Friday.
It named Democratic Republic of Congo, Senegal and North Korea in a footnote of its annual report, adding that it decided to name them “with a view to facilitating engagement”, adding that representatives of the three nations had been invited to its meeting in early 2027 “with the purpose of identifying any challenges and constraints”.
“The Committee noted the importance of Parties engaging with the Committee in a timely manner, while noting that some delays may be due to the national capabilities and circumstances of the Parties”, the report said.
In July, PAICC said 12 countries had ignored its repeated attempts to discuss why they had not published an NDC as required every five years under the 2015 Paris accord.
Members of the committee had been divided over whether to name them, but at a September meeting decided to do so in their annual report to the annual climate COP summit.
By the time the report was published on Friday, only Congo, Senegal and North Korea “had not communicated an NDC or submitted a [Biennial Transparency Report] and had not yet responded to any of the Committee’s notifications, despite several reminders issued by the Committee in this regard”.
Rainforest and renewable energy ambitions
The silence from Congo and Senegal is notable because the former is home to much of the Congo Basin rainforest while the latter has sought billions of dollars in climate finance to support its renewable energy ambitions.
After Brazil, Congo has more rainforest than any country in the world. This forest, and the country’s peatlands, absorb huge amounts of greenhouse gas but are fast being lost to expanding farmland, charcoal production, logging and mining.
Senegal signed a Just Energy Transition Partnership with Canada and wealthy European nations in 2023, to help it meet its renewable energy targets under the-then government of Macky Sall. It was chair of the Least Developed Countries group between January 2022 and December 2023.

Tejas Rao, who is researching the PAICC as part of a doctoral thesis at Cambridge University, said the governments of the three countries should engage with the committee.
“Engagement costs these governments very little and the committee has shown it will listen,” he said.
“Silence leaves the committee with no basis to help, and it leaves the [governments] exposed to the narrative that they are simply disengaged,” he told Climate Home News.
Paris Agreement requirement
The 2015 Paris Agreement requires all parties to publish an NDC every five years outlining their emissions reduction targets, with each plan meant to be more ambitious than the country’s last NDC.
The latest set – the third round of plans, with new targets for 2035 – was due in February 2025. While most countries missed this deadline, all but around 30 – mostly small emitters but including Egypt, Vietnam and Argentina – have now submitted them.
Over the year, the PAICC – which is made up of government climate officials from developed and developing countries – has been communicating with governments that have not submitted NDCs and trying to overcome barriers to them doing so.
Some nations have cited exceptional circumstances as the reason for not submitting an NDC, a process that requires a significant amount of work in tracking emissions and consulting on how to curb them across the economy. For example, a letter from a Sudanese official to the PAICC, seen by Climate Home News, said that the country’s civil war had led to the suspension of its NDC preparation.
The US and Iran are not signed up to the Paris Agreement and so do not have active NDCs, nor does Taiwan, which is not a UN member state.
Rao said that because the PAICC is “facilitative and non-punitive”, naming the countries “is meant to open a door, not close one – the invited consultation is the point”.
“In recent months, governments that explained their constraints, whether capacity, finance or domestic process, have been met with follow-up and support rather than sanction, and the number of silent governments has fallen sharply,” Rao said.
The post Paris Agreement committee names three countries snubbing it over NDCs appeared first on Climate Home News.
Paris Agreement committee names three countries snubbing it over NDCs
Climate Change
Q&A: Why a pivotal IPCC meeting in Ethiopia ended in ‘profound disappointment’
Countries have failed – for the sixth time running – to agree on the timeline for publishing the Intergovernmental Panel on Climate Change’s (IPCC) next set of influential reports.
The IPCC’s 65th session (IPCC-65) was seen by many to be the final opportunity for countries to agree on a schedule where its seventh assessment report (AR7) would be published in time for the UN’s second “global stocktake” of climate action.
Before last week’s meeting in Addis Ababa, Ethiopia, IPCC chair Prof Sir Jim Skea had warned that releasing the reports in time for the stocktake in 2028 would depend on a timelines being agreed by the end of 2026.
But the week-long meeting descended into fraught disagreements between governments, resulting in Skea “suspending” the talks on Friday evening with no decision made.
Countries were also unable to agree on the IPCC’s budget for the rest of the AR7 cycle, leaving the body with a “serious funding crisis”.
The IPCC has pledged to reconvene the meeting at the “earliest opportunity”; however, it has not yet given an indication of when this will be.
In his concluding remarks, Skea described the Addis Ababa summit as a “profound disappointment” and “among the most difficult IPCC meetings”, according to reporting from the Earth Negotiations Bulletin (ENB).
Some countries have reacted with dismay to the breakdown of negotiations, warning that a failure to have the IPCC’s latest assessments on climate adaptation and mitigation ready for the UN stocktaking exercise would undermine global climate action.
A climate envoy from a Pacific island state said it was a “travesty that a handful of countries continue to delay the IPCC’s reports – the science we need back home to help us save lives and livelihoods”.
Below, Carbon Brief explores the key developments, debates and disagreements at the IPCC meeting.
- What timeline options were delegates debating?
- How did the timeline discussions unfold?
- What were the main points of disagreement?
- Why is the IPCC in a ‘serious funding crisis’?
- How have scientists reacted?
- What other issues remain unresolved?
- How are the IPCC AR7 reports progressing?
- How might the IPCC use AI and enhance gender inclusivity?
What timeline options were delegates debating?
Top of the agenda during the Addis Ababa meeting was a decision on the timeline of the publication of AR7’s three working group reports – also known as the “work plan”. The three reports cover climate science (WG1), impacts and adaptation (WG2) and mitigation (WG3).
Countries failed to reach a resolution on the scheduling of the influential reports at five consecutive IPCC meetings since 2024 – despite drafting being well underway.
(For more, see Carbon Brief’s write-up of discussions in Istanbul, Sofia, Hangzhou, Lima and Bangkok.)
Reporting from the ENB from inside these meetings has highlighted that countries are split, broadly, into two groups – those that want all three reports to be published in time for the UN’s second “global stocktake” in 2028, and those that one, or more, to be published afterwards.
A key pillar


