Researchers from Columbia University have identified the physical mechanism by which carbon dioxide cools the Earth's upper atmosphere. While CO2 traps heat near the surface, in the thin air of the stratosphere, it acts as a radiator that emits heat into space. This cooling creates a feedback loop. As the stratosphere becomes colder, the planet's overall ability to shed heat decreases, trapping more energy in the lower atmosphere and accelerating surface warming.
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This is a good reminder that climate physics is not just about a blanket of gas. The vertical distribution of heat matters for the models we use to set emission targets.
Exactly. It shows why just looking at surface temps is only half the story. The stratosphere cooling is a clear fingerprint of greenhouse gas driven warming rather than solar activity.
Interesting physics, but it highlights how much more energy we have to manage at the surface. I wonder if this acceleration changes the projected peak load timelines for grid planning.
