What is the greenhouse gas that is most concentrated in the atmosphere?

Carbon dioxide is the greenhouse gas that is most concentrated in the atmosphere, making it a primary contributor to global warming and climate change. It is produced from various sources, including the burning of fossil fuels, deforestation, and other industrial processes. In the context of its concentration, carbon dioxide levels have been measured in parts per million (ppm), and they continue to rise due to human activities.

Although other greenhouse gases like methane and nitrous oxide have a stronger heat-trapping ability per molecule, their overall concentration in the atmosphere is much lower than that of carbon dioxide. Ozone, while significant in terms of its effects on air quality and climate, is not as prevalent as carbon dioxide in the overall greenhouse gas composition of the atmosphere. Thus, the prominence and the sheer volume of carbon dioxide make it the most concentrated greenhouse gas currently affecting our climate.