Yes, enormously. However, greenhouse gas emissions from aircraft, including CO2, NOx, and H2O, contribute significantly to global climate change. The airline industry contributes an estimated three percent of global greenhouse gas emissions – nearly as much as the entire African continent. Aircraft engines produce emissions that are similar to other emissions resulting from fossil fuel combustion. However, aircraft emissions are unusual in that a significant proportion is emitted directly into the upper troposphere and lower stratosphere where they have an impact on atmospheric composition. This makes airplane emissions particularly potent compared to other emissions.
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