“Climate Neutral” Transportation?
ECO received an invitation a few days ago to make its travel to COP23 “climate neutral”, by calculating the emissions of round trip air travel in tonnes of CO2 and compensating them. We decided to look into it a bit more and we have come out with more questions than answers.
First, is the calculator giving a real idea of someone’s carbon footprint? The invite says the calculator produces “conservative estimates of the climate footprint in tonnes of CO2”, which would give the impression that all the pollution is covered. But then, it refers to another tool for “more accurate calculation”. Additionally, the footprint does not take into account the impacts of non-CO2 pollutants such as aerosols, contrail formation and nitrogen oxides, which the International Panel for Climate Change (IPCC) has estimated to have 2 to 4 times the climate impact of CO2 emissions alone.
Second, is there double counting? If passengers buy credits that are already counted towards meeting a country’s climate target, then the offset credit does not neutralize anything as the emission reductions were already planned elsewhere. The newest UN Environment Emissions Gap Report, points out that in the case of Clean Development Mechanism (CDM) projects initiated several years ago that have not sold their credits, the reductions might be included in the emissions trajectory a country commits to in its NDC.
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