Emissions of Air Pollutants

This book was created in 2019–2020 during a period of unprecedented shocks to the world economy, including all transportation sectors, as a result of the coron- avirus pandemic and the onset of a severe worldwide economic recession. In the US national government, meanwhile, there was much change, confusion and uncer- tainty about climate change policies and related transportation and energy policies, as many of the administration’s policy changes were challenged in federal courts. In Europe, BREXIT negotiations between the EU and the UK continued, and the EU-28 became the EU-27.

This book was created in 2019–2020 during a period of unprecedented shocks to the world economy, including all transportation sectors, as a result of the coron- avirus pandemic and the onset of a severe worldwide economic recession. In the US national government, meanwhile, there was much change, confusion and uncer- tainty about climate change policies and related transportation and energy policies, as many of the administration’s policy changes were challenged in federal courts. In Europe, BREXIT negotiations between the EU and the UK continued, and the EU-28 became the EU-27.

Air pollution has become a major global issue due to rapid industrialization, human population growth and increasing urbanization. The various sources of atmospheric pollutants, both those created by human activity and those from natural physical and biological processes, have become the focus of much scientific research and analysis. An understanding of how these many pollutants are affecting air quality is essential in order to design strategies to mitigate them.