Aviation and the Global Atmosphere

Aviation and the Global Atmosphere
very dependent on the distance travelled; the type of aircraft, train, or car; the load factor; and the source of energy used. Substitution of rail and coach for air travel
could result in the reduction of emissions per passenger-km. However, the potential reduction would be achieved only for passengers travelling relatively short
distances and only on high-density routes that have rail or coach links. Finally, substituting other transport modes for air transport could have environmental impacts
on, for example, local air quality and noise exposure (which are outside the scope of this report).
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