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Inequality and the Social Cost of Carbon

机译:不平等与碳的社会成本

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摘要

We present a novel way to disentangle inequality aversion over time from inequality aversion between regions in the computation of the social cost of carbon. Our approach nests a standard efficiency based estimate and an equity weighted estimate as special cases. We use two integrated assessment models (FUND and RICE) to present quantitative estimates of the social cost of carbon. Our results suggest that inequality considerations lead to higher (lower) social cost of carbon values in high (low) income regions relative to an efficiency based approach, but that the effect is less strong than found in previous studies that used equity weighting. Our central estimate is that the social cost of carbon increases roughly by a factor of two to three, and even more for higher degrees of inequality aversion, when our disentangled equity weighting approach is used.
机译:我们提出了一种新颖的方法,可以在计算碳的社会成本时,将不平等厌恶随着时间的推移从区域之间的不平等厌恶中解脱出来。我们的方法嵌套了基于标准效率的估计和作为特殊情况的权益加权估计。我们使用两种综合评估模型(FUND和RICE)来提出碳社会成本的定量估计。我们的结果表明,与基于效率的方法相比,不平等的考虑导致高(低)收入地区的碳价社会成本更高(更低),但其影响不如以前使用股权加权的研究结果强。我们的中心估计是,当我们采用分散的股权加权方法时,碳的社会成本大约会增加2到3倍,对于不平等厌恶程度更高的情况甚至会更多。

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