This study presents the results of the ERTDF S-12 project for searching an optimum reduction scenario of the short-lived climate pollutants (SLCPs) to simultaneously mitigate the global warming and environmental problems. The study utilized REAS emission inventory, Asia-Pacific Integrated Model-Enduse (AIM/Enduse), MIROC6 climate model, NICAM non-hydrostatic atmospheric model, and models for estimating environmental damages to health, agriculture, and flood risks. Results of various scenario search indicate that it is difficult to attain simultaneous reduction of global warming and environmental damages, unless a significant reduction of CO₂ is combined with carefully designed SLCP reductions for CH₄, SO₂, black carbon (BC), NO_x, CO, and VOCs. In this scenario design, it is important to take into account the impact of small BC reduction to the surface air temperature and complex atmospheric chemical interactions such as negative feedback between CH₄ and NO_x reduction. We identified two scenarios, i.e., B2a and B1c scenarios which combine the 2D-scenario with SLCP mitigation measures using End-of-Pipe (EoP) and new mitigation technologies, as promising to simultaneously mitigate the temperature rise by about 0.33 °C by 2050 and air pollution in most of the globe for reducing damages in health, agriculture, and flood risk. In Asia and other heavy air pollution areas, health-care measures have to be enhanced in order to suppress the mortality increase due to high temperature in hot spot areas caused by a significant cut of particulate matter. For this situation, the B1b scenario is better to reduce hot spot areas and high-temperature damage to the public health.

中文翻译：

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为减少全球变暖和环境问题而开发的短期气候污染物（SLCP）减排方案的发展

这项研究提出了ERTDF S-12项目的结果，该项目旨在寻找短期气候污染物（SLCP）的最佳减排方案，以同时缓解全球变暖和环境问题。该研究利用了REAS排放清单，亚太地区综合模型最终用途（AIM /最终用途），MIROC6气候模型，NICAM非静水大气模型以及用于评估对健康，农业和洪水风险的环境损害的模型。各种方案搜索的结果表明，除非同时将CO ₂的显着减少与精心设计的CH ₄，SO ₂，黑碳（BC），NO _x的SLCP减少相结合，否则很难同时减少全球变暖和环境损害。，CO和VOC。在此方案设计中，重要的是要考虑到少量的BC降低对地表气温和复杂的大气化学相互作用（例如CH ₄和NO _x之间的负反馈）的影响减少。我们确定了两种情景，即B2a和B1c情景，它们结合了2D情景和使用管道末端（EoP）的SLCP缓解措施以及新的缓解技术，有望在2050年前同时缓解约0.33°C的温度上升和全球大多数地区的空气污染，以减少对健康，农业和洪水风险的破坏。在亚洲和其他空气污染严重的地区，必须加强医疗保健措施，以抑制由于颗粒物大量减少引起的热点地区高温造成的死亡率上升。对于这种情况，B1b方案更好地减少了热点区域和高温对公共卫生的损害。