Environmental impact of aviation

Aircraft engines produce gases, noise, and particulates from fossil fuel combustion, raising environmental concerns over both global impacts and their effects on local air quality. Jet airliners contribute to climate change by emitting carbon dioxide, the best understood greenhouse gas, and, with less scientific understanding, nitrogen oxides, contrails and particulates. Their radiative forcing is estimated at 1.

3–1.
4 that of CO2 alone, excluding induced cirrus cloud which remains poorly understood scientifically.
In 2018, global commercial operations generated 2.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 4.0

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