This study is a first attempt to evaluate how the major efforts made by several European cities in the frame of the Covenant of Mayors (CoM) initiative can impact the air pollution levels in the participating cities. CoM is by no mean one of the major cities initiatives aimed at mitigating climate change, supporting local authorities in the implementation of their climate action plans. Energy savings measures reported in the CoM cities' action plans have been analysed from the air quality perspective in order to find quantitative relations in the way local authorities deal with mitigation and how these practices are expected to have consequences on the air quality at urban level and finally positively impacting the citizens' health. In the paper, the air quality 2713 energy saving measures proposed by 146 cities located in 23 countries in the frame of the CoM are selected and their co-benefits for air quality and public health estimated by means of SHERPA, a fast modelling tool that mimics the behaviour of a full physically-based Chemical Transport Model. Besides evaluating the overall benefits of this subset of mitigation measures for the air quality, the study also investigates the relevance of some factors such as the implementation sector, the city size and the pollution levels in achieving the highest possible co-benefits. The results presented refer to the special field covered by the study, i.e. energy saving measures and are not automatically referable to other types of measures. Nevertheless, they clearly show how climate mitigation and air quality policies are deeply interconnected at the urban level.

中文翻译：

---

市长倡议的主要城市签署国的节能措施对空气质量的影响。

这项研究是首次尝试评估欧洲几个城市在市长之约（CoM）倡议框架内所做的主要努力如何影响参与城市的空气污染水平。CoM绝不是旨在缓解气候变化，支持地方当局执行其气候行动计划的主要城市举措之一。已从空气质量的角度分析了CoM城市行动计划中报告的节能措施，以便找到地方当局应对缓解措施的定量关系，以及这些实践如何对城市和城市的空气质量产生影响。最终对公民的健康产生了积极影响。在纸上 选择了CoM框架内位于23个国家的146个城市提出的空气质量2713节能措施，并通过SHERPA（一种模仿人类行为的快速建模工具）估算了其对空气质量和公共卫生的共同效益。完整的基于物理的化学传输模型。除了评估这部分缓解措施对空气质量的总体收益外，该研究还调查了某些因素（例如实施部门，城市规模和污染水平）在实现最大可能的协同效益方面的相关性。给出的结果涉及该研究涉及的特定领域，即节能措施，不能自动引用其他类型的措施。尽管如此，