UN Reports Exceeding 1.5-Degree Target Is Unavoidable, Aims to Minimize Overshoot with Carbon Removal

The United Nations Environment Programme (UNEP) has published a new report on global warming. It concludes that the Paris Agreement goal of limiting temperature rise to within 1.5 degrees Celsius above pre-industrial levels cannot be achieved. Reporting by Engadget’s staff@engadget.com (Anna Washenko) highlights that the report marks a shift away from maintaining the previous target.

The report is titled “Limiting Overshoot.” It focuses on how to limit the overshoot. It presents a pathway to minimize the period during which temperatures exceed 1.5 degrees, keep the peak as low as possible, and then bring temperatures back down.

Conclusion That Exceeding the 1.5-Degree

Target Is Unavoidable

UNEP climate scientists concluded that the Earth’s average temperature will rise beyond 1.5 degrees. The 1.5-degree threshold set by the Paris Agreement refers to the increase above pre-industrial levels. Until now, the organization has called on countries to take measures to avoid exceeding this threshold.

This report shifts that premise. Rather than how to avoid exceeding the threshold, the focus is now on how quickly to return after exceeding it. According to the Engadget article, scientists consider it inevitable that temperatures will exceed the threshold.

This judgment reflects the current delay in emission reductions. The report confronts the reality that limiting warming to within 1.5 degrees will not be achieved with current efforts. The focus has shifted from the achievability of the target to minimizing damage.

There are no good outcomes if we remain above 1.5°C. Across the globe, extreme heatwaves are already proving that climate impacts will strike faster, hit harder, and last longer – costing more lives and causing deeper disruption

UNEP Executive Director Inger Andersen said that there will be no good outcomes if temperatures remain above 1.5°C. Extreme heatwaves are already occurring around the world. Climate impacts will strike faster, hit harder, and last longer. She warned that more lives will be lost and deeper disruption will occur.

What Is the New Post-Overshoot Strategy?

The report sets out a strategy of “overshoot, peak, and decline.” It assumes a temporary exceedance of 1.5 degrees. It then aims to keep the magnitude and duration of the overshoot as small as possible. The goal is to keep the peak temperature low and shorten the period of exceedance.

Now is the time we must double down on climate action. We can — and must — get on the right path. By cutting greenhouse gas emissions, strengthening resilience and adaptation, and ensuring exceedance of 1.5°C is as small and short as possible

Executive Director Andersen said now is the time to double down on climate action. She said it is possible — and necessary — to get on the right path. She cited cutting greenhouse gas emissions, strengthening resilience and adaptation, and ensuring the exceedance of 1.5°C is as small and short as possible as the pillars of this approach.

This strategy marks a shift from the previous approach of “preventing overshoot” to “accelerating recovery after overshoot.” Rather than denying the overshoot itself, it steers toward realistic damage management. The report warns that even a short-term overshoot could lead to catastrophic consequences. Recovery from the impacts will become more difficult the longer it takes.

Carbon Removal Is an Additional Measure,

Not a Substitute

At the core of the strategy are two elements: achieving the net-zero greenhouse gas emissions targets set by each country, and the large-scale removal of carbon dioxide from the atmosphere.

The report positions carbon dioxide removal not as a substitute for net-zero targets but as an additional measure that must be implemented. It takes the position that emission reductions cannot be neglected and compensated for by removal technologies alone.

This clarification is important. It is intended to prevent excessive reliance on removal technologies from being used as a justification for delaying emission reductions. Removal functions only as a means to complement reductions.

From a technical perspective, large-scale carbon dioxide removal remains an immature field. Multiple approaches are being researched, including direct air capture, biochar, and ocean sequestration. All face challenges for large-scale deployment. Energy consumption, cost, land acquisition, and the long-term stability of storage are key issues. The report’s call for “large-scale removal” is also a strong demand for technological development and implementation.

Policy Rollbacks Widen Gap with Targets

Behind the report lies a rollback of policies in various countries. According to Engadget’s reporting, both the United States and the European Union (EU) governments eased regulations on greenhouse gas emissions this year. While details of the specific relaxations are not provided, it suggests that pressure to reduce emissions is weakening overall.

The Paris Agreement’s 1.5-degree target is pursued through a framework based on the aggregate of each country’s Nationally Determined Contributions (NDCs). However, the current sum of NDCs falls short of the reduction levels needed to achieve the target. UNEP has pointed out this gap every year in its Emissions Gap Report. The latest “Limiting Overshoot” report can be positioned as the next stage of discussion, premised on the gap remaining unfilled.

The policy relaxations are seen as driven by short-term economic and energy security considerations. At the same time, the manifestation of climate impacts is accelerating. Extreme events such as heatwaves, floods, and droughts are seen as harbingers of the risks posed by exceeding 1.5 degrees. The disconnect between policy and reality is reflected in the tone of the report.

Implementation Challenges for Carbon Removal

Technologies

Large-scale deployment of carbon dioxide removal requires development on both the technological and institutional fronts. Direct Air Capture (DAC) chemically separates carbon dioxide from the atmosphere. The captured carbon dioxide is then stored underground or reused as material or fuel. In theory, it can be deployed regardless of emission source, but it requires large amounts of energy and water.

Bioenergy with Carbon Capture and Storage (BECCS) is a method that captures carbon dioxide absorbed by plants when biomass is burned. Competition with land use and food production is a challenge. Ocean-based approaches have also been proposed, but assessing their impact on ecosystems is essential.

All of these approaches require measurement, verification, and assurance of permanence for the amount removed. Mechanisms are needed to guarantee that removed carbon dioxide does not return to the atmosphere. How to ensure credibility as carbon credits is also an issue. Removal costs often exceed emission reduction costs, and financing frameworks remain underdeveloped.

The report’s characterization of removal as an “additional measure” can be seen as a cautious positioning that takes these challenges into account. While emission reductions remain the main pillar, removal is envisioned to offset residual emissions. It is also expected to play a second role: capturing part of past emissions to achieve a temperature decline after the peak.

Editorial Opinion

In the short term, we expect this to affect corporate decarbonization plans and investment decisions in climate tech. With the UN’s official document presenting an “overshoot” strategy premised on exceeding 1.5 degrees, the twin pillars of emission reductions and carbon removal become clearer. In particular, demand for carbon dioxide removal procurement and technology verification could accelerate discussions on procurement standards and accounting rules over the next 3 to 6 months. We assess that how to ensure the credibility and permanence of removal volumes will become the market’s focal point.

In the long term, the narrative around climate targets may transform. Reframing 1.5 degrees from a “ceiling to be defended” to a “level that will be temporarily exceeded but must be swiftly returned to” could spill over into policy and financial risk assessments. From a 1- to 3-year perspective, investment in adaptation and resilience will likely be positioned as a major pillar alongside emission reductions. We anticipate that standards for urban infrastructure and supply chain design will be reviewed on the premise of exposure to high temperatures, even if only for a short period.

As an editorial team, we ask who will take responsibility for minimizing the overshoot period and how. The report calls for a combination of emission reductions and removal, but with regulatory rollbacks advancing in various countries, where is the effective enforcement power to limit the magnitude and duration of the overshoot?

References

• “UN report says global warming will surpass the goal of 1.5 degrees Celsius”, by staff@engadget.com (Anna Washenko) — Engadget, 2026-09-02T20:18:43.000Z (ARR)
• Source URL: https://www.engadget.com/2249905/un-report-says-global-warming-will-surpass-the-goal-of-1-5-degrees-celsius/