Editing IPCC:AR6/WGIII/Chapter-10 (section)

=== 10.5.1 Historical and Current Emissions from Aviation ===

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Aviation is widely recognised as a ‘hard-to-decarbonise’ sector ( [[#Gota--2019|Gota et al. 2019]] ) having a strong dependency on liquid fossil fuels and an infrastructure that has long ‘lock-in’ timescales, resulting in slow fleet turnover times. The principal GHG emitted is CO 2 from the combustion of fossil fuel aviation kerosene (‘Jet-A’), although its non-CO 2 emissions can also affect climate ( [[#10.5.2|Section 10.5.2]] ). International emissions of CO 2 are about 65% of the total emissions from aviation ( [[#Fleming--2019|Fleming and de Lépinay 2019]] ), which totalled approximately 1 Gt of CO 2 in 2018. Emissions from this segment of the transport sector have been steadily increasing at rates of around 2.5% per year over the last two decades (Figure 10.10), although for the period 2010 to 2018 the rate increased to roughly 4% per year. The latest available data (2018) indicate that aviation is responsible for approximately 2.4% of total anthropogenic emissions of CO 2 (including land-use change) on an annual basis (using IEA data, IATA data and global emissions data of [[#Le%20Quéré--2018b|Le Quéré et al. (2018b)]] ).

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'''Figure 10.10 | Historical global emissions of CO''' 2 '''from aviation, along with capacity and transport work (given in available seat kilometres, ASK; revenue passenger-kilometres, RPK).''' Source: adapted from [[#Lee--2021|Lee et al. (2021)]] using IEA and other data.

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