Subscribe now

Physics

Quantum quirk explains why carbon dioxide causes global warming

A phenomenon called the Fermi resonance, which affects how molecules vibrate, is responsible for a large part of carbon dioxide’s planet-warming effect

By Alex Wilkins

13 February 2024

Carbon dioxide emissions are warming the planet

Rupert Oberhauser / Alamy

Carbon dioxide is uniquely suited to cause global warming because of a coincidental quirk of quantum mechanics.

Global warming is largely caused by carbon dioxide and other gases absorbing infrared radiation, trapping heat in Earth’s atmosphere – known as the greenhouse effect.

The most accurate climate models use precise measurements of the amount of radiation CO₂ can absorb to calculate how much heat will be trapped in the atmosphere. These models are excellent…

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with New Scientist events and special offers.

Sign up

To continue reading, subscribe today with our introductory offers

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop