当前位置: X-MOL 学术Environ. Model. Assessment › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A Scheme for Jointly Trading off Costs and Risks of Solar Radiation Management and Mitigation Under Long-Tailed Climate Sensitivity Probability Density Distributions
Environmental Modeling & Assessment ( IF 2.4 ) Pub Date : 2021-07-10 , DOI: 10.1007/s10666-021-09778-2
Elnaz Roshan 1 , Mohammad M. Khabbazan 1, 2 , Hermann Held 1
Affiliation  

Side effects of “solar-radiation management” (SRM) might be perceived as an important metric when society decides on implementing SRM as a climate policy option to alleviate anthropogenic global warming. We generalize cost-risk analysis that originally trades off expected welfare loss from climate policy costs and risks from transgressing climate targets to also include risks from applying SRM. In a first step of acknowledging SRM risks, we represent global precipitation mismatch as a prominent side effect of SRM under long-tailed probabilistic knowledge about climate sensitivity. We maximize a social welfare function for the following three scenarios, considering alternative relative weights of risks: temperature-risk-only, precipitation-risk-only, and equally-weighted both-risks. Our analysis shows that in the temperature-risk-only scenario, perfect compliance with the 2 °C-temperature target is attained for all numerically represented climate sensitivities, a unique feature of SRM, but the 2 °C-compatible precipitation corridor is violated. The precipitation-risk-only scenario exhibits an approximate mirror-image of this result. In addition, under the both-risks scenario, almost 90% and perfect compliance can be achieved for the temperature and precipitation targets, respectively. Moreover, in a mitigation-only analysis, the welfare loss from mitigation cost plus residual climate risks, compared to the no-climate-policy option, is approximately 4.3% (in terms of balanced growth equivalent), while being reduced more than 90% under a joint-mitigation-SRM analysis.



中文翻译:

在长尾气候敏感性概率密度分布下联合权衡太阳辐射管理和减缓的成本和风险的方案

当社会决定实施 SRM 作为缓解人为全球变暖的气候政策选择时,“太阳辐射管理”(SRM)的副作用可能被视为一个重要指标。我们概括了成本风险分析,该分析最初将气候政策成本的预期福利损失和超出气候目标的风险进行权衡,以包括应用 SRM 的风险。在承认 SRM 风险的第一步中,我们将全球降水不匹配表示为 SRM 在有关气候敏感性的长尾概率知识下的显着副作用。我们在以下三种情况下最大化社会福利函数,同时考虑风险的替代相对权重:仅温度风险、仅降水风险和同等加权的两种风险。我们的分析表明,在只有温度风险的情况下,所有数字表示的气候敏感性都完全符合 2 °C 温度目标,这是 SRM 的一个独特特征,但违反了与 2 °C 兼容的降水走廊。仅降水风险情景呈现出该结果的近似镜像。此外,在两种风险情景下,温度和降水目标分别可以达到近90%和完美的符合率。此外,在仅缓解分析中,与无气候政策选项相比,缓解成本加上剩余气候风险造成的福利损失约为 4.3%(平衡增长当量),同时减少了 90% 以上在联合缓解 SRM 分析下。SRM 的一个独特特征,但违反了与 2 °C 兼容的降水走廊。仅降水风险情景呈现出该结果的近似镜像。此外,在两种风险情景下,温度和降水目标分别可以达到近90%和完美的符合率。此外,在仅缓解分析中,与无气候政策选项相比,缓解成本加上剩余气候风险造成的福利损失约为 4.3%(平衡增长当量),同时减少了 90% 以上在联合缓解 SRM 分析下。SRM 的一个独特特征,但违反了与 2 °C 兼容的降水走廊。仅降水风险情景呈现出该结果的近似镜像。此外,在两种风险情景下,温度和降水目标分别可以达到近90%和完美的符合率。此外,在仅缓解分析中,与无气候政策选项相比,缓解成本加上剩余气候风险造成的福利损失约为 4.3%(平衡增长当量),同时减少了 90% 以上在联合缓解 SRM 分析下。对于温度和降水目标,几乎可以达到 90% 并且完全符合要求。此外,在仅缓解分析中,与无气候政策选项相比,缓解成本加上剩余气候风险造成的福利损失约为 4.3%(平衡增长当量),同时减少了 90% 以上在联合缓解 SRM 分析下。对于温度和降水目标,几乎可以达到 90% 并且完全符合要求。此外,在仅缓解分析中,与无气候政策选项相比,缓解成本加上剩余气候风险造成的福利损失约为 4.3%(平衡增长当量),同时减少了 90% 以上在联合缓解 SRM 分析下。

更新日期:2021-07-12
down
wechat
bug