Take Off Delayed? ICAO Must Act On Aviation Emissions
As the International Civil Aviation Organisation (ICAO) approaches its triennial assembly in Montreal this fall, ECO is anxious for real progress. On its current flight path, commercial aviation will consume 27% of the available carbon budget in a 1.5°C scenario. In 2013, ICAO committed to adopting a credible market-based mechanism (MBM) at its 2016 assembly to stabilise net emissions at 2020 levels.
But in negotiations leading up to this assembly, nations have done a U-turn on this pledge. They agreed that the forthcoming targets will be voluntary until 2027. After kicking their mandatory, universal commitments down the road for seven years, the same countries that have signed up to the Paris Agreement are about to finalise an ICAO plan that is neither mandatory nor universal.
The voluntary nature of the emerging ICAO deal may be less important than whether ICAO delegates interpret it as a ceiling or a floor. Paris, after all, started out as a voluntary responsibility, to which the vast majority of the world’s nations have voluntarily signed on to, but the caveat is that the Paris Agreement will only enter into force after reaching the 55/55% threshold that would turn it into a legal instrument. So far, the signs aren’t good—countries such as the US are trying to use the ICAO deal to block more ambitious measures at regional and national levels.
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