Climate Change Is Altering a Key Greenhouse Gas in a Way Scientists Didn’t Expect

Two decades of satellite measurements indicate atmospheric nitrous oxide is being removed faster.

Researchers analyzed NASA’s Microwave Limb Sounder data from 2004–2024.

The effective atmospheric lifetime of N2O is shrinking by about 1.4% per decade.

UC Irvine scientists link the accelerated removal to climate-driven changes in stratospheric temperature and circulation.

The study was published in Proceedings of the National Academy of Sciences.