Cities are currently at the core of air quality (AQ) improvement. The present work provides an overview of AQ management strategies and outcomes in 10 European cities (Antwerp, Berlin, Dublin, Madrid, Malmö, Milan, Paris, Plovdiv, Prague, Vienna) in 2018, and their evolution since 2013 (same cities, plus Ploiesti and Vilnius), based on first-hand input from AQ managers. The status of AQ mitigation in 2018, and its evolution since 2013, were assessed. While results evidenced that the majority of mitigation strategies targeted road traffic, emerging sources such as inland shipping, construction/demolition and recreational wood burning were identified. Several cities had in 2018 the ambition to continue decreasing air pollution concentrations to meet WHO guidelines, an ambition which had not yet been identified in 2013. Specific needs identified by all of the cities assessed were tools to quantify the effectiveness of mitigation strategies and for cost-benefit analysis, as well as specific and up to date technical guidance on real-world road vehicle emissions. The cities also requested guidance to identify mitigation measures promoting co-benefits, e.g., in terms of AQ, climate change, and noise. Support from administrations at local-regional-national-EU scales, and especially involving local policy-makers early on in the air quality management process, was considered essential. This work provides insight into the drivers of successful/unsuccessful AQ policies as well as on the challenges faced during their implementation. We identify knowledge gaps and provide input to the research and policy-making communities as to specific needs of cities.

当前，城市是改善空气质量（AQ）的核心。本工作概述了2018年欧洲10个城市（安特卫普，柏林，都柏林，马德里，马尔默，米兰，巴黎，普罗夫迪夫，布拉格，维也纳）的AQ管理策略和成果，以及它们自2013年以来的演变（相同的城市，以及（Ploiesti和维尔纽斯），基于AQ管理人员的第一手意见。评估了2018年降低空气质量的状况以及自2013年以来的发展趋势。虽然结果表明大多数缓解策略都是针对道路交通的，但已查明了内陆运输，建筑/拆除和休闲木材燃烧等新兴资源。有几个城市在2018年有志于继续降低空气污染浓度以符合世界卫生组织的指导方针，这一志向在2013年尚未确定。被评估的所有城市确定的特定需求是量化缓解策略的有效性和成本效益分析的工具，以及有关现实世界道路车辆排放的具体且最新的技术指南。这些城市还要求提供指导，以找出促进共同效益的缓解措施，例如在空气质量，气候变化和噪音方面。至关重要的是，必须获得地方-地区-国家-欧盟各级政府的支持，尤其是在早期参与空气质量管理过程的地方决策者的支持。这项工作可以深入了解成功/失败的AQ政策的驱动因素以及实施过程中面临的挑战。我们确定知识差距，并就城市的特定需求向研究和决策社区提供意见。