Global Climate Change Science News

[Brian Peacock]

Discussion of planetary boundaries between Mark Lynas and Johan Rockström:

[L'Emmerdeur]

Perhaps we needn't worry overmuch about methane clathrates but it looks like there may be a different sort of long term vicious cycle to consider.

'Melting glaciers could trigger more explosive eruptions globally, finds research'

Melting glaciers may be silently setting the stage for more explosive and frequent volcanic eruptions in the future, according to research on six volcanoes in the Chilean Andes.

Presented today [Tuesday 8 July] at the Goldschmidt Conference in Prague, the study suggests that hundreds of dormant subglacial volcanoes worldwide – particularly in Antarctica – could become more active as climate change accelerates glacier retreat.

The link between retreating glaciers and increased volcanic activity has been known in Iceland since the 1970s, but this is one of the first studies to explore the phenomenon in continental volcanic systems. The findings could help scientists better understand and predict volcanic activity in glacier-covered regions.

...

Pablo Moreno-Yaeger from the University of Wisconsin-Madison, USA, is presenting the research at the Goldschmidt Conference. He said: “Glaciers tend to suppress the volume of eruptions from the volcanoes beneath them. But as glaciers retreat due to climate change, our findings suggest these volcanoes go on to erupt more frequently and more explosively. The key requirement for increased explosivity is initially having a very thick glacial coverage over a magma chamber, and the trigger point is when these glaciers start to retreat, releasing pressure – which is currently happening in places like Antarctica.

“Our study suggests this phenomenon isn’t limited to Iceland, where increased volcanicity has been observed, but could also occur in Antarctica. Other continental regions, like parts of North America, New Zealand and Russia, also now warrant closer scientific attention.”

While the volcanic response to glacial melting is almost instant in geological terms, the process of changes in the magma system is gradual and occurs over centuries, giving some time for monitoring and early warning.

The researchers also note that increased volcanic activity could have global climate impacts. In the short term, eruptions release aerosol (tiny particles in gases) that can temporarily cool the planet. This was seen after the 1991 eruption of Mount Pinatubo in the Philippines, which reduced global temperatures by approximately 0.5 degrees C. But with multiple eruptions, the effects reverse.

“Over time the cumulative effect of multiple eruptions can contribute to long-term global warming because of a buildup of greenhouse gases,” said Moreno-Yaeger. “This creates a positive feedback loop, where melting glaciers trigger eruptions, and the eruptions in turn could contribute to further warming and melting.”

[Brian Peacock]

[Tero]

Finally! They got rid of pesky greenhouse effect. Now, ban fluoride nation wide.
https://www.npr.org/2025/07/24/nx-s1-53 ... -trump-epa

[L'Emmerdeur]

Evil scientists have falsely maligned the innocent patriotic fossil fuel corporations for long enough. Time for politicians to step in and make things right.

'US to rewrite its past national climate reports'

US President Donald Trump's administration is revising past editions of the nation's premier climate report—its latest move to undermine the scientific consensus on human-caused global warming.

The decision, announced by Energy Secretary Chris Wright during a CNN appearance Tuesday night, follows the government's revocation of the Endangerment Finding, a scientific determination that underpins a host of regulations aimed at curbing greenhouse gas emissions.

Asked by CNN's Kaitlan Collins why previous editions of the National Climate Assessment were no longer available online, former fracking company CEO Wright responded: "Because we're reviewing them, and we will come out with updated reports on those and with comments on those."

First published in 2000, the National Climate Assessment has long been viewed as a cornerstone of the US government's understanding of climate science, synthesizing input from federal agencies and hundreds of external experts.

Previous editions warned in stark terms of mounting risks to America's economy, infrastructure, and public health if greenhouse gas emissions are not curtailed. But in April, the administration moved to dismiss the hundreds of scientists working on the sixth edition.

Under the Global Change Research Act of 1990, the government is legally obligated to deliver the climate assessment to Congress and the president.

Trump's administration and the Republican-controlled Congress have pressed forward with their pro-fossil fuel agenda—dismantling clean energy tax credits through the so-called "Big Beautiful Bill" and opening more ecologically sensitive lands to drilling.

Last month's proposed revocation of the Endangerment Finding by the Environmental Protection Agency was accompanied by the release of a new climate study from the Department of Energy, authored by climate change contrarians.

[JimC]

Revisionist history at its finest...

[Brian Peacock]

Oceania was at war with Eurasia; therefore Oceania had always been at war with Eurasia.

[L'Emmerdeur]

It's of a piece with yanking funding for climate study in general. Infantile magical thinking--if you don't see it it's not there, even if the reason you don't see it is because your eyes are covered. If you didn't know their priors you'd think that any but the most devoted MAGA believer would understand that it's absurd and transparently dishonest. It helps that their culture is built on despising egg-headed intellectuals, climate scientists in particular.

[Brian Peacock]

And it's also totally pointless in an internet age unless you have complete control over the information the public has access to. Even if the media and the schools and universities play along it's still going to be an open secret, and just another reason to distrust and despise the govt.