# Does carbon dioxide preferentially accumulate in one layer of the atmosphere?

Just as Ozone concentration peaks at around 20 km in the stratosphere, having a distribution around higher and lowers layers of the atmosphere, does the same happen for carbon dioxide or other greenhouse gases?

They do, but not to the extreme that $$\ce{O3}$$ does. For reference, there is $$\ce{O3}$$ near the ground, but the $$\ce{O3}$$ in the stratosphere is amplified by the Chapman cycle that forms it.
• $$\ce{CO2}$$ - emitted by combustion and respiration. Because $$\ce{CO2}$$ is a mostly stable molecule, it can probably travel pretty high into the atmosphere before it falls down due to the molecular weight. But due to where it's generated it'd still be more concentrated near the ground.