The state of science on severe air pollution episodes: quantitative and qualitative analysis

Morawska, Lidia Zhu, Tong Liu, Nairui Torkmahalleh, Mehdi Amouei Andrade, Maria de Fatima Barratt, Benjamin Broomandi, Parya Buonanno, Giorgio Ceron, Luis Carlos Belalcazar Chen, Jianmin Cheng, Yan Evans, Greg Gavidia, Mario Guo, Hai Hanigan, Ivan Hu, Min

Abstract

Severe episodic air pollution blankets entire cities and regions and have a profound impact on humans and their activities. We compiled daily fine particle (PM2.5) data from 100 cities in five continents, investigated the trends of number, frequency, and duration of pollution episodes, and compared these with the baseline trend in air pollution. We showed that the factors contributing to these events are complex; however, long-term measures to abate emissions from all anthropogenic sources at all times is also the most efficient way to reduce the occurrence of severe air pollution events. In the short term, accurate forecasting systems of such events based on the meteorological conditions favouring their occurrence, together with effective emergency mitigation of anthropogenic sources, may lessen their magnitude and/or duration. However, there is no clear way of preventing events caused by natural sources affected by climate change, such as wildfires and desert dust outbreaks.

Más información

Título de la Revista: ENVIRONMENT INTERNATIONAL
Volumen: 156
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2021
Página de inicio: 1
Página final: 12
Idioma: English
URL: https://www.sciencedirect.com/science/article/pii/S0160412021003573
DOI:

https://doi.org/10.1016/j.envint.2021.106732

Notas: WOS ISI, https://www.journals.elsevier.com/environment-international