Which gas is predominantly responsible for global warming?

Answer 1

Carbon dioxide (CO2) is the gas predominantly responsible for recent global warming.

The most abundant greenhouse gases are water vapour and carbon dioxide, and they tend to work in tandem in maintaining the global average temperature at a comfortable level suitable for human existence.

While humans can not readily and directly increase the level of water vapour in the atmosphere, we can readily and directly increase the level of carbon dioxide in the atmosphere, simply by burning fossil fuels, manufacturing cement, and by deforestation. It is this rise in atmospheric carbon dioxide levels which is principally responsible for the enhanced greenhouse effect and the recent increase in average global temperatures.

Water vapour does plays a significant role in all global warming, as a greenhouse enhancer. As atmospheric carbon dioxide levels raise the earth's temperature, water vapour levels in in atmosphere can rise in consequence, thereby contributing to a further small rise in temperatures. This is known as positive feedback.

Methane also plays a significant part but, being a very potent greenhouse gas, is fortunately at very much lower concentrations.

Answer 2

Carbon dioxide (CO2) is predominantly responsible for global warming. It is the most abundant greenhouse gas produced by human activities such as burning fossil fuels, deforestation, and industrial processes that trap heat in the Earth's atmosphere and contribute to climate change.

Answer 3

The greenhouse gas that most people are concerned with over global warming is carbon dioxide.

Answer 4

Carbon Dioxide

Answer 5

Carbon Dioxide