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Fifty-year change in air pollution in Kaohsiung, Taiwan by Chiu-Hsuan Lee; Peter Brimblecombe; Chon-Lin Lee is a Environmental Science article available to read on EtoBox.

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## Abstract The change in air quality in cities can be the product of regulation and emissions. Regulations require enforcement of emission reduction, but it is often shifting economic and societal structures that influence pollutant emissions. This study examines the long-term record of air pollutants in Kaohsiung, where post-war industrialisation increased pollution substantially, although improvements are observed in recent decades as the city moved to a more mixed economy. The study tracks both gases and particles across a period of significant change in pollution sources in the city. Concentrations of SO~2~ and aerosol SO~4~^2−^ were especially high ~1970, but these gradually declined, although SO~4~^2−^ to a lesser extent than its precursor, SO~2~. While twenty-first century emissions of SO~2~ and NO~x~ have declined, this has been less so for NH~3~, because it arises from predominantly agricultural sources. The atmosphere in Kaohsiung continues to have high concentrations of O~3~, and these have risen in the city, likely a product of less titration by NO. The changes have meant that ozone has become an increasing threat to health and agriculture. Despite a potential for prod

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Author

Chiu-Hsuan Lee; Peter Brimblecombe; Chon-Lin Lee

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)