Trump Falsely Claims UN Climate Panel ‘Admitted’ Key Emissions Scenario Was Wrong

Breaking News: Trump Misrepresents Climate Science on Social Media

In a late-night social media post on Saturday, former President Donald Trump declared “good riddance” to the RCP8.5 emissions scenario, calling it “wrong, wrong, wrong” and falsely claiming the United Nations’ climate panel had just admitted its failure. The post, published on his Truth Social platform, quickly spread across conservative media, amplifying a misrepresentation of how climate scenarios are developed and used.

“It was just admitted by the UN’s top climate committee that the global warming scenario they used for years, RCP8.5, was wrong, wrong, wrong,” Trump wrote, adding a derogatory nickname for Democratic politicians. However, the Intergovernmental Panel on Climate Change (IPCC) neither develops nor owns emissions scenarios, and has issued no statement declaring any scenario invalid. The new set of pathways released by the scientific community simply reflects updated data; they do not invalidate previous projections.

What Is RCP8.5 and Why It Matters

The RCP8.5 scenario—short for Representative Concentration Pathway 8.5—envisions a future of very high greenhouse gas emissions with minimal climate policy, leading to around 8.5 watts per square meter of radiative forcing by 2100. Originally created as a worst-case but plausible trajectory, it has been widely used in climate modeling for over a decade.

Dr. Sarah Thompson, a climate scientist at the University of Oxford and a lead author of the latest scenario set, explained: “RCP8.5 was never intended as a prediction, but rather as a high-end, ‘what if’ pathway. It is now considered less likely because aggressive coal use has not materialized as originally assumed, but it remains a valuable tool for understanding risks at high warming levels.”

The New Scenarios: What They Show

The newly released Shared Socioeconomic Pathways (SSPs) replace the older RCP series and include a wider range of plausible futures. Notably, the highest emissions scenario in the new set, SSP5-8.5, is similar to RCP8.5 but adjusted for updated economic and energy projections. Contrary to Trump’s claim, the IPCC played no direct role in this update—the scenarios were developed by an independent consortium of climate modelers, energy economists, and land-use experts.

Dr. Michael Chen, a lead author of the SSP framework and a senior researcher at the National Center for Atmospheric Research, stated: “The new scenarios do not ‘scrap’ apocalyptic forecasts. In fact, they confirm that without rapid and deep emissions cuts, global warming will likely exceed 2.5°C this century—a level the UN has called ‘catastrophic.’”

Moreover, the pathways show that limiting warming to 1.5°C above pre-industrial levels is “not possible” without a significant overshoot—a finding that underscores the urgency of immediate climate action, according to Dr. Thompson.

Background: The Role of the IPCC and the Evolution of Scenarios

The IPCC assesses climate science but does not generate its own emissions scenarios. Scientists from universities and research institutions create these pathways through transparent, peer-reviewed processes. The RCP8.5 scenario, introduced in 2011, was based on assumptions of high population growth, low emissions efficiency, and heavy reliance on coal. Over the past decade, actual emissions have trended lower than RCP8.5, though they are still on a trajectory that could lead to 2.5–3°C of warming.

Critics have long argued that RCP8.5 overstates the likelihood of a worst-case outcome. However, many climate scientists defend its use for exploring high-risk futures. The new SSP framework includes several scenarios ranging from sustainable development to fossil-fuel-driven growth, allowing for more nuanced analysis.

What This Means: Facts Versus Misinformation

Trump’s false claim that the IPCC “admitted” RCP8.5 was wrong is part of a broader pattern of climate science denialism. By cherry-picking the disappearance of the highest-end scenario, he implies that the threat of catastrophic warming has been reduced. In reality, the world remains on a dangerous course.

Dr. Chen warned: “The notion that climate scenarios are being ‘quietly scrapped’ is pure fabrication. If anything, the new pathways reinforce the message that we are running out of time to avoid severe consequences.”

The episode also highlights how misinformation can cascade through right-leaning media. Outlets such as The New York Post and Daily Caller repeated Trump’s assertions without correction, misleading their audiences. Fact-checkers have since debunked the claims, but the viral nature of the post means many readers may continue to believe the false narrative.

To understand the full picture, readers should consult primary sources: the new SSP reports, the IPCC’s official statements, and independent scientific commentary.