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Valuing the Ozone-Related Health Benefits of Methane Emission Controls

机译：重视甲烷排放控制与臭氧有关的健康益处

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Methane is a greenhouse gas that oxidizes to form ground-level ozone, itself a greenhouse gas and a health-harmful air pollutant. Reducing methane emissions will both slow anthropogenic climate change and reduce ozone-related mortality. We estimate the benefits of reducing methane emissions anywhere in the world for ozone-related premature mortality globally and for eight geographic regions. Our methods are consistent with those used by the US Government to estimate the social cost of carbon (SCC). We find that the global short- and long-term premature mortality benefits due to reduced ozone production from methane mitigation are (2011) $790 and $1775 per tonne methane, respectively. These correspond to approximately 70 and 150 % of the valuation of methane's global climate impacts using the SCC after extrapolating from carbon dioxide to methane using global warming potential estimates. Results for monetized benefits are sensitive to a number of factors, particularly the choice of elasticity to income growth used when calculating the value of a statistical life. The benefits increase for emission years further in the future. Regionally, most of the global mortality benefits accrue in Asia, but 10 % accrue in the United States. This methodology can be used to assess the benefits of methane emission reductions anywhere in the world, including those achieved by national and multinational policies.
机译：甲烷是一种温室气体，会氧化形成地面臭氧，它本身就是一种温室气体和对健康有害的空气污染物。减少甲烷排放量将减缓人为气候变化并降低与臭氧有关的死亡率。我们估算了减少全球任何地方和八个地理区域与臭氧相关的过早死亡的甲烷排放量的好处。我们的方法与美国政府用来估算碳的社会成本（SCC）的方法一致。我们发现，由于减缓甲烷排放而减少的臭氧生产所造成的全球短期和长期过早死亡收益（2011年）分别为每吨甲烷790美元和1775美元。在使用全球变暖潜力估算值将二氧化碳推算为甲烷之后，这些值分别相当于使用SCC对甲烷对全球气候影响的估值的70％和150％。货币化收益的结果对许多因素敏感，尤其是在计算统计寿命值时所使用的对收入增长的弹性选择。未来排放年份的收益会进一步增加。从地区上看，大多数全球死亡率受益于亚洲，而美国则为10％。该方法可用于评估世界上任何地方（包括国家和跨国政策所实现的）甲烷减排的效益。

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