Not even Nobel prize winners can fix aviation emissions

● By Prof. David Hodgkinson, University of Western Australia ● Aviation is a growing source of greenhouse gas emissions. In other industries emissions are declining, or at least are better regulated. Airline emissions, however, continue to soar. How viable are laws that would regulate the carbon footprint of airlines? Will airlines ever have an obligation to use biofuels? Both of these questions arise because of the what’s known as the “aviation emissions problem”. The answers to those questions are “not viable at all” and “no time soon.” The emissions problem Aviation’s contribution to total emissions is between 2% and 8%, according to the IPCC. The International Civil Aviation Organization forecasts significant further emissions growth. Against a 2006 baseline we’re expecting a 63-83% increase by 2020, and a 290-667% increase by 2050. This is without accounting for more use of biofuels. Research published last month by Manchester Metropolitan University found total aviation emissions in 2006 were 630 megatonnes CO2. By 2050 emissions would be in the order of 1,000 to 3,100 megatonnes, depending on growth and mitigation efforts. And research published last week in Nature Climate Change shows that just as aviation can affect the climate, climate change could affect aviation. Clear-air turbulence linked to atmospheric jet streams, strengthened by human-induced climate change, could well lead to a bumpy ride on trans-Atlantic flights. Ground controls to lessen aviation’s carbon footprint Under the Kyoto Protocol developed countries like Australia “shall pursue limitation or reduction of emissions of greenhouse gases from aviation working through the International Civil Aviation Organization”. The International Civil Aviation Organization (ICAO) is the UN agency responsible for international aviation. In other words, aviation emission’s are the ICAO’s problem, and not Kyoto’s, excluding them from the world’s primary climate change legal instrument ...Zum vollständigen Artikel


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