Ground level ozone (O3) also tropospheric ozone, is a trace gas of the troposphere, with an average concentration of 20–30 parts per billion by volume (ppbv), with close to 100 ppbv in polluted areas.

The troposphere is the lowest layer of Earth's atmosphere, where most weather events occur, while the stratosphere lies above it, containing the ozone layer that protects life on Earth from ...

With toxic smog choking cities worldwide and 99% of the population breathing unsafe air, 2025 must be the year for decisive ...

If ozone is found in the troposphere, it can count as one warming planet Earth and potentially a greenhouse gas. Recently, ...

(Approximate contribution to global warming: 15%; Hansen & Sato 2001). Tropospheric ozone, as opposed to stratospheric ozone (i.e., the “ozone layer”), is a secondary pollutant. One of the ...