Content overview: “How Climate Change Is Slowing Earth's Rotation: The Subtle Atmospheric Signal”. New research reveals that global warming is subtly altering Earth's rotation by changing atmospheric circulation patterns. As greenhouse gases warm the planet, they redistribute atmospheric mass and shift wind systems, transferring angular momentum between the atmosphere and the solid Earth. This exchange can speed up or slow down the planet's spin by milliseconds, a tiny but measurable effect.
The study highlights a key mechanism: as the tropics expand and jet streams shift poleward, the atmosphere's angular momentum changes, exerting a torque on the Earth's surface. Over decades, this could lead to noticeable changes in the length of a day, independent of other factors like melting ice sheets or ocean currents. Why it matters: this atmospheric signal is a direct fingerprint of human-caused climate change, distinct from natural variability. The full version stays on the original page, which this listing opens directly.