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Alleviating inequality in climate policy costs: an integrated perspective on mitigation, damage and adaptation

机译：减轻气候政策成本中的不平等：关于缓解，破坏和适应的综合观点

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Download video Transcript View all Environ. Res. Lett. video abstracts Equity considerations play an important role in international climate negotiations. While policy analysis has often focused on equity as it relates to mitigation costs, there are large regional differences in adaptation costs and the level of residual damage. This paper illustrates the relevance of including adaptation and residual damage in equity considerations by determining how the allocation of emission allowances would change to counteract regional differences in total climate costs, defined as the costs of mitigation, adaptation, and residual damage. We compare emission levels resulting from a global carbon tax with two allocations of emission allowances under a global cap-and-trade system: one equating mitigation costs and one equating total climate costs as share of GDP. To account for uncertainties in both mitigation and adaptation, we use a model-comparison approach employing two alternative modeling frameworks with different damage, adaptation cost, and mitigation cost estimates, and look at two different climate goals. Despite the identified model uncertainties, we derive unambiguous results on the change in emission allowance allocation that could lessen the unequal distribution of adaptation costs and residual damages through the financial transfers associated with emission trading.
机译：下载视频成绩单查看所有环境。 Res。来吧视频摘要公平考虑在国际气候谈判中起着重要作用。尽管政策分析通常将重点放在与缓解成本相关的公平性上，但是适应成本和残余损害程度在地区上存在很大差异。本文通过确定排放配额的分配方式将如何变化以抵消总气候成本（定义为缓解，适应和剩余破坏的成本）的区域差异，来说明将适应和剩余破坏纳入公平考虑的相关性。我们将全球碳税产生的排放水平与全球限额和贸易制度下的两种排放配额分配进行了比较：一种等于减排成本，另一种等于总气候成本占GDP的比重。为了说明缓解和适应方面的不确定性，我们使用模型比较方法，该方法采用两个具有不同损害，适应成本和缓解成本估算的替代建模框架，并着眼于两个不同的气候目标。尽管存在确定的模型不确定性，但我们对排放配额分配的变化得出了明确的结果，该结果可以减轻与排放交易相关的财务转移带来的适应成本和剩余损害的不平等分配。

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