Article ID Journal Published Year Pages File Type
4427266 Environmental Pollution 2007 11 Pages PDF
Abstract

Ozone remains an important phytotoxic air pollutant and is also recognized as a significant greenhouse gas. In North America, Europe, and Asia, incidence of high concentrations is decreasing, but background levels are steadily rising. There is a need to develop a biologically significant and usable standard for ozone. We compare the strengths and weaknesses of concentration-based, exposure-based and threshold-based indices, such as SUM60 and AOT40, and examine the O3 flux concept. We also present major challenges to the development of an air quality standard for ozone that has both biological significance and practicality in usage.

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Life Sciences Environmental Science Environmental Chemistry
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