Even if the aviation sector achieves net zero carbon emissions, flights could still increase global average temperatures by between 0.1°C and 0.4°C through effects that don’t depend on CO2, such as contrails
“We found the mitigation efforts needed to get aviation to a place where it’s compatible with the Paris agreement are enormous,” says Brazzola.
Her team explored different future scenarios of demand for flights, technologies to power them and how much COwould need to be removed from the atmosphere by trees or machines to hit net zero. “Without a very strong reduction in demand and without very rapid, almost infeasible switches to clean technologies, we would in all cases need to deploy carbon removal to a very large extent,” she says.
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