by Daniel Brouse
September 17, 2025
A new deep-ocean study has revealed that even the deepest layers of the ocean are warming at a rapid rate. Since the oceans absorb and store over 90% of the excess heat trapped by greenhouse gases, even a tiny increase — as little as one-tenth of a degree — represents an enormous amount of additional stored thermal energy.
The physics is stark: if that accumulated ocean heat were distributed across land surfaces, it would equate to an estimated 35°C increase in land temperatures — a level that would make most of the planet uninhabitable. This highlights how oceans have been masking the true extent of surface warming, acting as a temporary buffer while silently destabilizing their own systems through stratification, circulation slowdown, and ecosystem collapse.
Right now, the entire Pacific Ocean is running 1.6°C above its long-term average — a shocking six standard deviations above the mean. In climate science, deviations of this magnitude are virtually off the charts, underscoring just how far outside of “normal variability” our planet has moved.
The consequences are already deadly. The last three summers have been the hottest ever recorded globally, with Europe bearing some of the worst impacts. This summer alone, thousands died across European cities and towns from severe heat. According to attribution studies, three times as many people perished from extreme heat than would have in a world without human-driven warming. The death toll is no longer hypothetical — it is measurable, mounting, and accelerating.
Yet even as evidence mounts, political obstruction continues. The Trump administration, officials repeatedly downplays or denies the dangers of rising temperatures. One of the United States’ most respected scientific bodies, the National Academy of Sciences, flatly rejected those claims, affirming that the evidence for dangerous climate change is “beyond scientific dispute” and that the impacts on the nation are worsening year by year.
The deep ocean is not just a passive reservoir; it is a warning system. The rapid heating of its most remote depths is telling us, in no uncertain terms, that we are burning through our margin of safety. The oceans may have shielded us from the full brunt of global warming so far, but that shield is cracking — and when it fails, the true scale of the climate crisis will be unleashed.
Footnote:
Sidd and I have been discussing the difference between ocean and land temperatures. I thought I understood it before, but when this new study came out, it really clicked. When people talk about keeping global warming below 1.5°C, that figure is just a global average — across land, oceans, and the atmosphere. In reality, it’s a misleading benchmark. What truly matters is that even a one-tenth of a degree rise in the deep oceans represents an immense increase in stored heat, with far-reaching consequences for the entire climate system.
* Our probabilistic, ensemble-based climate model — which incorporates complex socio-economic and ecological feedback loops within a dynamic, nonlinear system — projects that global temperatures are becoming unsustainable this century. This far exceeds earlier estimates of a 4°C rise over the next thousand years, highlighting a dramatic acceleration in global warming. We are now entering a phase of compound, cascading collapse, where climate, ecological, and societal systems destabilize through interlinked, self-reinforcing feedback loops.
We examine how human activities — such as deforestation, fossil fuel combustion, mass consumption, industrial agriculture, and land development — interact with ecological processes like thermal energy redistribution, carbon cycling, hydrological flow, biodiversity loss, and the spread of disease vectors. These interactions do not follow linear cause-and-effect patterns. Instead, they form complex, self-reinforcing feedback loops that can trigger rapid, system-wide transformations — often abruptly and without warning. Grasping these dynamics is crucial for accurately assessing global risks and developing effective strategies for long-term survival.
What Can I Do? → “Solutions to the Fossil Fuel Economy and the Myths Accelerating Climate and Economic Collapse.“
There are numerous actions you can take to contribute to saving the planet. Each person bears the responsibility to minimize pollution, discontinue the use of fossil fuels, reduce consumption, and foster a culture of love and care. The Butterfly Effect illustrates that a small change in one area can lead to significant alterations in conditions anywhere on the globe. Hence, the frequently heard statement that a fluttering butterfly in China can cause a hurricane in the Atlantic. Be a butterfly and affect the world.