IPCC Admits Its Worst-Case Climate Predictions Were Always Implausible

In the ScenarioMIP design paper for CMIP7 (the modeling foundation for future IPCC AR7), lead authors (including Detlef van Vuuren) state that the high-end CMIP6 scenario SSP5-8.5 (successor to RCP8.5) “have become implausible” for the 21st century.

In the ScenarioMIP design paper for CMIP7 (the modeling foundation for future IPCC AR7), lead authors (including Detlef van Vuuren) state that the high-end CMIP6 scenario SSP5-8.5 (successor to RCP8.5) “have become implausible” for the 21st century.

Reasons cited: renewable cost trends, policy emergence, and recent emissions data. The new scenario range narrows on the high end; the replacement “High” scenario assumes policy rollback but stays below prior 8.5 W/m² forcing. Low-end scenarios have also shifted due to observed trends.

This echoes years of critiques from Roger Pielke Jr., Justin Ritchie, Glen Peters, Zeke Hausfather, and others: RCP8.5/SSP5-8.5 assumed unrealistic coal resurgence (multiple times current levels, straining reserves), high population + slow tech progress, and was never ideal as a “business-as-usual” baseline. It was overused in thousands of papers, impact studies, and media for dramatic projections (often 4°C+ warming).

Gregory Wrightstone argues this validates long-standing critiques: extreme models were overstated, CO₂ is beneficial (plant food, not just a pollutant), modest warming has upsides, and there’s no existential crisis. He highlights record crop yields and ecosystem gains from CO₂ fertilization.

This fits broader data: satellite observations show significant planetary greening; global crop production has risen substantially with CO₂ and technology; deaths from extreme weather have plummeted due to wealth and adaptation.

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Exclusive: Wrightstone on U.N. Climate Panel Admission Apocalyptic Predictions Were Always ‘Implausible’

The United Nations’ Climate Panel admitted its apocalyptic predictions were always “implausible,” geologist Gregory Wrightstone, Executive Director of the CO2 Coalition and author of “A Very Convenient Warming: How Modest Warming And More CO2 Are Benefitting Humanity,” told Breitbart News Daily.

Wrightstone told listeners that he was happy to deliver “good news and the truth about what is actually happening to Earth’s ecosystems and to the human condition,” contrary to the fearmongering routinely espoused by the radical left. BREITBART has the story.

He touted “huge benefits” that are accumulating across “almost every ecological niche across the earth.”

“And humanity is benefiting from warming in more C02. We should welcome that. We should celebrate it instead,” he said, debunking the longtime narrative that C02 is a terrible, toxic pollutant and will inevitably lead to our demise. On the contrary, Wrightstone said it is not a pollutant at all.

“If we look at the science, the facts, and the data, number one: C02 is not a pollutant. It’s not toxic,” he said, explaining that if someone locked themselves in a room with only C02, they would die from lack of oxygen – not because C02 is toxic.

He continued, “Right now we’re a little bit over 400 parts per million ppm,” he said before referencing the Intergovernmental Panel on Climate Change (IPCC), which he is all too familiar with, serving as an “expert reviewer for that very same IPCC several years ago.”

“And they’ve been touting this, what’s called RCP 8.5,” he said, explaining this in layman’s terms.

“Representative Concentration Pathways. They predict that C02 levels will reach over 2,000 parts per million in the future. We’ve been pushing back. We, being the coalition experts, have been pushing back against that. And just last week, the IPCC came out, and get this. They said this, what we’ve been predicting for 15 years, they called it implausible,” he revealed, explaining that the IPCC admitted their own predictions were bunk.

“I would go further, I would call it impossible, and so all these models they’re using to predict warming from C02 that will be unusual and unprecedented, they’re all wrong, and this is just one part of it,” Wrightstone said, revealing that they also “amplify the supposed warming by increases in water vapor, which then increase temperatures even higher” – another falsehood.

“And again we find that’s just not true either,” he said, offering the biggest takeaway for Americans across the nation and individuals worldwide: The climate crisis does not exist.

“They should sleep well. There is no climate crisis, and they should sleep well because Earth and humanity are benefiting, not getting worse,” he added.

Read the full story here.

Al Gore’s “Inconvenient Truth” Decrepit at Age 20

Twenty years ago, “An Inconvenient Truth” received a standing ovation at the
Sundance Film Festival. Though it was full of predictions that never
came to pass, it was a key catalyst of the climate activist movement.

A man in a suit appears shocked, standing in front of icebergs against a sunset backdrop, with bold text overlay reading 'The Arctic will be Ice Free 2013'.

From The Science Matters

By Ron Clutz

A crowded cinema audience watching a movie, with a bright white screen illuminated in front of them.

Kevin Killough describes the decay of Gore’s signature movie in his Just the News article Al Gore’s ‘Inconvenient Truth’ turns 20, and critics say biggest disaster is its failed predictions.  Excerpts in italics with my bolds and added images.

Twenty years ago, “An Inconvenient Truth” received a standing ovation at the
Sundance Film Festival. Though it was full of predictions that never
came to pass, it was a key catalyst of the climate activist movement.

Twenty years ago, Monday, former Vice-President Al Gore’s documentary on global warming, “An Inconvenient Truth,” premiered at the Sundance Film Festival and received a standing ovation. The 2006 documentary was released to theaters the following May and went on to gross over $25 million worldwide.

Gore’s film was a primary catalyst for the climate activist movement, and it generated a lot of concern about global warming following its release. The movie left audiences with the impression that the human race was hurtling toward a dystopian future on a planet baking in unbearable temperatures where extreme weather caused frequent disasters.

A woman holding a sign that reads 'PREPARE FOR THE END OF THIS WORLD' in a crowded harbor setting.

Almost 13 years to the day after its release, Rep. Alexandria Ocasio-Cortez, D-N.Y., was telling people the world would end in 12 years – presumably five years from now – because of the burning of fossil fuels.

Matt Wielicki, who writes about climate and energy on his “Irrational Fear” Substack, was once an assistant professor in the Department of Geological Sciences at the University of Alabama. In the early part of his academic career, he taught at a local college.

A speaker presenting on stage with a graph displayed behind him, discussing climate data in front of an audience.
Al Gore with a version of the Hockey Stick graph in the 2006 movie An Inconvenient Truth

He told Just the News that he showed “An Inconvenient Truth” to his students. Over time, he began to question the “gloom and doom” narratives Gore presents in his film, he said.

“People took that as a starting point, and they just kept running further and further with it,” Wielicki said.

Gore’s film, however, was full of numerous predictions that turned out to be wrong, and it’s likely that the world will not end in 2031, as Ocasio-Cortez predicted. 

A political cartoon depicting a man with a smirk holding a 'Nobel Prize' award, surrounded by a list of claims that a British judge has ruled as scientific errors in Al Gore's film 'An Inconvenient Truth.'
Stubborn ice

Among the predictions Gore made in the documentary is that Africa’s Mt. Kilimanjaro would have no more snow on it by 2016. In 2020, The Times reported that the snow on the 19,000-foot mountain remained, despite Gore’s predictions. But the documentary had caused some to rush to climb the mountain before the snow disappeared. Instead, the tourists are surprised to find glaciers still clinging to it.

Gore also predicted that Glacier National Park would be “the park formerly known as Glacier” after all the ice melted away in the blazing hot temperatures that were to descend upon the human race. The claim made a big mark, and federal agencies began looking closely at glaciers.

Three polar bears in snowy surroundings with text overlay discussing their decreasing population.

The U.S. Geological Survey predicted all the glaciers in the park would be gone by 2020. Signs were placed throughout the park warning visitors of the impending end of glaciers, which never happened. Instead, CNN reported, the signs had to be removed in 2020 when it was clear the glaciers remained.

Gore also connected Hurricane Katrina to global warming – later renamed climate change – and he predicted that these storms would become more frequent. The reality of human contributions to hurricane activity is far more nuanced and uncertain than Gore discusses in the documentary.

Line and bar graph showing Annual ISAAC data from 1900 to 2010, with black bars representing annual values, an orange line indicating the 10-year centered average, and a blue line depicting CO2 levels in ppm.
Integrated Storm Activity Annually over the Continental U.S. (ISAAC). Value is the Accumulated Cyclone Energy from all storms over land.

The National Oceanic and Atmospheric Administration has a section on its website dedicated to the topic. The page reads.

“In summary, it is premature to conclude with high confidence that human-caused increases in greenhouse gases have caused a change in past Atlantic basin hurricane activity that is outside the range of natural variability, although greenhouse gases are strongly linked to global warming,”

A man named Mr. Martz is seated at a hearing table, prepared to speak, with papers in hand. The audience behind him includes individuals with varied expressions, some looking attentively at him.
Uncertainty and nuance

Meteorologist Chris Martz said that climate science is full of the kind of uncertainty and nuance you see on the NOAA website, which “An Inconvenient Truth” dismisses entirely. 

A cartoon depicting a long line of people outside a theater showing two films: 'Inconvenient Sequel' and 'Climate Hustle.'

Since Gore’s film was released – which was given a sequel in 2017 – Gore has continued to make false predictions, the meteorologist said. In 2009, Gore stated that the Arctic would be ice-free in summer within five to seven years. As of today, the Arctic still has ice in summer.

“We look at the Arctic ice now and yes; it’s declined since 1979 when satellite records began … But over the last 18 to 20 years, there’s really been no trend. And this caught scientists off guard. The models never predicted this,” Martz told Just the News.

A glacier landscape with a person appearing concerned, featuring speech bubbles discussing climate predictions about ice disappearance.

He also said there’s been multiple studies on Arctic ice, and while some predicted an ice-free Arctic, others find the ice extent in the region recedes or grows as a result of natural variability. 

Predictions of cataclysm stemming from climate change regularly get reported in the media, but there’s little reporting when the predictions fail. In 2022, NBC News was one of many outlets reporting that California and the American West were in the midst of a “megadrought,” which was the worst the region had seen in over 1,000 years.

Earlier this month, NBC reported that California is drought free for the first time in 25 years. The article makes no mention of the previously predicted “megadrought,” nor does it mention climate change.

Graph showing U.S. percentage areas of Very Wet (green) and Very Dry (orange) conditions over time, with a blue line indicating CO2 levels in ppm from January 1895 to December 2022.

Martz said that many of his critics respond to these failed predictions by arguing they weren’t made by scientists in peer-reviewed articles published in journals. Instead, they’re made by politicians or scientists in interviews. But most people don’t get their information from scientific journals. They get it from the media, Martz said.

A humorous infographic titled 'Climate Change: A Timeline (of Failed Predictions)' illustrating various exaggerated predictions about climate change from the 1960s to the 2010s, featuring cartoon-style graphics and annotations.

“That communication is what’s more important in terms of public perception of what science is,” he said.

Listening to the experts

Though it had no scientific basis, there was a widespread belief that global warming could cause the human race to go extinct. 

A 2017 survey found that 40% of Americans believed there is a 50% chance of that happening. In fact, the number of people killed by natural disasters has never been lower, a fact largely ignored by the media.

Line graph comparing average annual deaths per decade from climate-related causes (blue) and non-climate-related causes (red) from 1920 to 2020. The graph shows a significant decline in climate-related deaths and a stable trend for non-climate-related deaths.
My Mind is Made Up, Don’t Confuse Me with the Facts. H/T Bjorn Lomborg, WUWT

People appear more likely to be influenced by Congresswoman Ocasio-Cortez than the scientific data on deaths from climate-related natural disasters.

A cartoon depicting two men standing on a bridge. One man is confusedly asking the other why his seventh-grade class would jump off a bridge, to which the other replies he has no idea. In the background, a sign is held up stating 'EARTH WILL be UN-INHABITABLE in 0 YEARS!' with various protest signs about climate change.

Her statement that the world would end in 12 years was actually a misreading of a special report by the Intergovernmental Panel on Climate Change, which predicted that the world would need to cut its carbon dioxide emissions by 40-50% by 2030 and eliminate them entirely by 2050 to keep temperatures from rising more than 1.5 degrees Celsius above levels they were at before humans began burning a lot of fossil fuels.

Infographic illustrating emission pathways towards the Paris Agreement, showing historical CO2 emissions, projected scenarios for limiting global warming to 1.5 °C and 2.0 °C, and targets for achieving carbon neutrality by 2050 and 2070.

There’s nothing in the report that predicts disaster after crossing that threshold, and some experts are estimating that we have already done so. The report estimates that under the worst-case scenario, the global GDP loses about 2.6%, but it would still be about 10 times larger than it is today. But people didn’t read the report. They just heard Ocasio-Cortez warning of end times.

The report, or at least Ocasio-Cortez’s understanding of it, led her to introduce the ambitious Green New Deal plan, a suite of progressive policies justified as presenting global disaster. It failed to get a single vote when it was brought to the Senate floor for a procedural vote, which would mean, according to Ocasio-Cortez, the world has five years until it ends.

A satirical political cartoon depicting a map of the United States labeled 'The Socialist States of the Green New Deal'. It features exaggerated illustrations of a person with outstretched arms, various signs indicating restrictions like 'No Fly Zone', 'No Gas-Powered Cars', and 'No Farting Cows', along with icons representing government programs, taxes, and a navy, highlighting the perceived implications of the Green New Deal.

Larry Behrens, communications director for Power the Future, told Just the News that AOC likely spent the seven-year anniversary of her prediction doing exactly what she does any other day.

“Because she knows it was nonsense when she said it, and it’s nonsense now,” he said.

“Make no mistake, she’ll join the rest of the eco-left in their convenient climate silence, hoping voters forget their green crusade delivered record energy prices and crushing inflation. On this anniversary, ‘climate’ is the last word AOC, and her allies want to utter because midterms are coming, and voters remember exactly who made life more expensive.”

A cartoon depicting a worker in a hard hat sitting on a structure labeled 'OIL & GAS INDUSTRY' while a character resembling a donkey operates a boat labeled '2020 DEMS,' making a sound effect 'BRRR-AP-AP-AP-AP.'