Where are the bunkers?
In the final years of negotiations for the new climate agreement, it’s still not clear if it will include the fastest growing emissions sources—international aviation and shipping, also known as bunker fuels.
CO2 emissions from international shipping and aviation were about 950 MT and 705 MT respectively in 2012; combined they account for as much emissions as Germany, the sixth largest emitting country. When indirect effects are taken into account, the impact could already be approaching 10% of global climate forcing. In the almost 2 decades since the ICAO and IMO started discussing greenhouse gases, little concrete action has materialised, and scarily these emissions are on course to double or even treble by 2030. If emissions from these sectors are not addressed effectively by 2050, bunker emissions could swell to account for a quarter of all emissions. Such high emissions from the international transport sector would make it all but impossible to limit aggregate global warming to less than 2ºC as it would place an impossible emission reduction burden on other sectors.
IMO and ICAO discussions have seen limited progress.
Carbon neutral growth from 2020 is the most ambitious goal that the aviation sector has proposed, allowing emissions to grow to 2020 and then offsetting growth beyond that.
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