Changes in Air Pollutants from Fireworks in Chinese Cities

Chinese New Year has traditionally been welcomed with fireworks, but this meant holiday can experience intense peaks of pollutants, particularly as particulate matter. Such environmental issues add to other risks (e.g., accident, fire, and ecological health threats) posed by firework displays, cultural reasons encourage such celebrations. This study examines air pollution from fireworks across a time increasingly stringent bans series 2014–2021 using random forest (decision-tree) model explore the effect year-to-year weather changes on pollutant concentrations at Year. Peak pollutants have decreased in cities hint importance well-enforced regulation these traditional celebrations, e.g., Beijing, Tianjin, Chongqing. The suggested relative humidity was an important controlling variable, perhaps presence water vapor might also accelerate particle growth surrogate parameter related atmospheric mixing. Bans resisted first, shown evidence growing public acceptance. regulations are effective, even outer parts cities. Celebrations safely return including light shows use lanterns.