This figure was calculated by researchers from the University of Geneva on behalf of the Swiss Federal Office for the Environment (FOEN) in 2015 and based on the total Swiss budget for CO₂. This was then equally divided among all Swiss residents up until 2100.
Since this budget has already been exceeded for several years, this means that the CO₂ budget for the future is effectively even lower. Basically this means: The later the target of net zero emissions is reached, the higher the negative emissions will need to be later (see: What does “zero net emission” mean?).
The budget approach shows how the financing of climate protection projects acts as a bridging technology: When you calculate the emissions generated by a flight and support climate protection projects on the basis of these calculations, these emissions do not disappear, rather emissions are prevented to an equal extent elsewhere. The tally remains balanced, as does the budget.
Source: Dao, et al. (2015)
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