Below, we submit our results to numerous robustness tests. First, we add to the climate change sensitivity analysis in the main text by taking into account a total probability density function for ECS values. Second, we look at the effects of uncertainty in BHM`s estimates. In this regard, we take into account other estimates of 1 and 2, on the one hand, and different model specifications, on the other. This analysis is followed by a comparison with the DJO estimates. Third, we study the influence of uncertainty on the socio-economic future by recalibrate the DICE model based on a selected group of SSPs. As a by-product of this calibration, we obtain mitigation and cost functions that emulate the costs of a detailed process model and thus represent a further evolution of the DICE model. The derivation of these functions allows us to test the sensitivity of our results to these alternative emission reduction costs. We complete this section by providing more information on the robustness test for the preferred parameters shown in the main text. This comparison gives warming at the end of the century, which is associated with the lowest total cost for damage and reduction, as used in the IAM used (Figure 1).
The optimal warming of costs is thus determined by the shape of the two cost curves. The reduction and cost curves are characterized by two universal characteristics. First, they differ in the current warming, particularly when there is no technology available for negative emissions. Second, the mitigation costs of a non-effort-mitigation warming scenario fall to zero. On the other hand, as you know, the damage and cost curve is zero without warming and increases with rising temperatures. The extent of the increase in uns mitigation damage is being investigated. However, due to the divergence in mitigation costs, the economically optimal temperature becomes less sensitive to the exact level of damage once it reaches a certain level (Figure 1). Here, we examine whether the damage caused by extrapolating the observed economic growth and temperature ratio is above this level. Outside the United States, there is also a chance to ensure the climate, said Andrew Light, who helped build the Paris agreement as the State Department`s high-level climate negotiator under Obama.
Far from a comprehensive agreement he helped build (the second recently, after the nuclear deal with Iran) tearing America`s credibility on all foreign policy issues. And how much more ambitious could other countries be in their climate ambitions if American diplomats were there to finance them? The Paris Agreement is an environmental agreement that was adopted by almost all nations in 2015 to combat climate change and its negative effects.