Urban areas are major sources of air pollution. Pollutant emissions affecting air quality in cities are considered to have adverse consequences for human health. Public and government concern about environmental issues arising from urban air pollution has increased over the last decades. The urban air pollution problem is widespread throughout the world and it is important to find ways of eliminating or at least reducing the risks for human health. The fundamentals of the physical and chemical processes occurring during air pollutant transport in the atmosphere are nowadays understood to a large extent. In particular, modelling of such processes has experienced a remarkable growth in the last decades. Monitoring capabilities have also improved markedly in the most urban areas around the world. However, neither modelling nor monitoring can solve urban air pollution problems, as they are only a first step in improving useful information for future regulations. The defining of efficient control strategies can not be achieved without a clear knowledge of the complete pollution process, i.e. emission, atmospheric transport and transformation, and deposition at the receptor. Improving our ability to establish valid urban scale source-receptor relation ships has been the objective of SA TURN, one of the 14 subprojects of EURO TRAC-2. Similar to the other subprojects of this co-ordinated environmental pro ject within the EUREKA initiative, SA TURN brought together international groups of scientists to work on problems directly related to atmospheric chemistry and physics. The present volume summarises the scientific results of SATURN.

With the recent tightening of air quality standards as mandated by the U.S. EPA, has come great pressure on regulatory bodies at all levels of government, along with the industries and groups affected by these standards, to better assess the hazards and risks that result from air pollutants. Risk Assessment and Indoor Air Quality carefully ties tog

World Bank Technical Paper No. 278. Burning fossil fuels produces numerous pollutants which, in sufficient quantities, injure people, forests, and crops. The authors explain how to measure the benefits of air pollutant reduction and suggest strateg

Available online: https://pub.norden.org/temanord2022-508/ A group of Nordic air quality researchers organised 10-11th of June 2020 a web-conference on Nordic air quality research for civil servants and the general audience. The name of the conference was Air Quality For All - A Nordic air quality conference (AQ4ALL), and it included an overview of research from three air quality research programmes with active Nordic participation. Presentations were made by researchers from the Swedish Clean Air and Climate (SCAC) research programme, the Nordic-WelfAir (NWA) research project, as well as the EU-funded project Action on Black Carbon in the Arctic (EUA-BCA). The following themes were discussed: • Air quality effects on the Nordic welfare system, • Nordic air pollution and the Arctic climate – effects and solutions, • Air pollution effects on public health and the environment This report gives an overview of the key messages from the projects.