Abstract
Aviation emissions from 2016 to 2050 could consume between 12% and 27% of the remaining carbon budget to keep global temperature rise below 1.5 °C above preindustrial levels. Consequently, aviation is being challenged to immediately start to reduce its in-sector emissions, then sharply reduce its CO2 emissions and fully decarbonize toward the second half of this century. Among the analyses carried out within the Horizon 2020 project PARE—Perspectives for Aeronautical Research in Europe, this paper tackles the potential role of climate change levy schemes in achieving the ambitious objective of aviation decarbonization by the year 2050.
Highlights
According to International Civil Aviation Organization (ICAO), aviation is responsible for 2% of global CO2 emissions [1]
Aviation will still produce by 2050 a significant amount of CO2, which might endanger the achievement of the goals of the Paris Agreement [3]
These figures suggest that aviation emissions, from 2016 to 2050, could consume between 27% and 12% of the remaining carbon budget to keep global temperature rise below 1.5 ◦ C above preindustrial levels [4]
Summary
According to International Civil Aviation Organization (ICAO), aviation is responsible for 2% of global CO2 emissions [1]. The international aviation community aspires to a 2% annual improvement in fuel efficiency and a carbon neutral industry growth from year 2020 onwards, the achievement of this goal is still at risk. An ICAO report from 2019 [1] quantified emissions of the aviation sector over the period 2016–2050 as between 56 GtCO2 in a business-as-usual scenario and 12 GtCO2 in an optimistic, but unlikely-to-meet, scenario with technological improvements and 100%. These figures suggest that aviation emissions, from 2016 to 2050, could consume between 27% and 12% of the remaining carbon budget to keep global temperature rise below 1.5 ◦ C above preindustrial levels [4]
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