Why is ozone a greenhouse gas?

Ozone (O3) is produced from oxygen (O2) in two different ways: In the stratosphere, the rays of the sun interact with the oxygen and that creates an ozone layer that protects us from dangerous high frequency sun radiations. read more

Tropospheric ozone is a particularly difficult greenhouse gas to keep track of, due to its short lifespan and the fact that ozone concentrations can vary hugely from place to place. The current estimate for global tropospheric ozone is 370 million tonnes, equivalent to about 50 parts per billion. read more