Title: Atmospheric Composition Change Global and Regional Air Quality
Citation: ATMOSPHERIC ENVIRONMENT vol. 43 p. 5268-5350
Publication Year: 2009
JRC N°: JRC53739
ISSN: 1352-2310
URI: http://www.elsevier.com/locate/atmosenv
DOI: 10.1016/j.atmosenv.2009.08.021
Type: Articles in periodicals and books
Abstract: Air quality transcends all scales with the atmosphere from the local to the global with handovers and feedbacks at each scale interaction. Air quality has manifold effects on health, ecosystems, heritage and climate. This review describes the state of scientific understanding in relation to global and regional air quality. The major air quality elements of ozone, non-methane hydrocarbons, nitrogen oxides and aerosols are covered. The review discusses the natural and anthropogenic emissions of these species. The new knowledge on source magnitude and distribution are shown as well as powerfull new results on emissions as observed by satellites. The current state of the art in respect of the gas and aerosol-phase processing is reviewed showing the new paradigm shifts in the understanding of the formation and distribution of organic aerosol derived from mass spectrometric composition measurements. A number of case studies used to demonstrate the importance of multi-phase processing as well as the increased understanding coming from intensive regional studies. New findings in respect of the transport of pollutants across the scales are discussed, in particular the move to quantify the impact of long-range transport on regional air quality. The impacts of air quality on health are considered in outline before the policy impacts and implications are identified. The challenges for concerted air quality and climate change policy (co-benefit) are discussed. The material presented is biased towards publications from the last decade but includes earlier work, where more recent developments are limited or absent. Gaps and research questions that remain intractable at least since 2000 are identified, the review concludes with a focus of research questions for the coming decade.
JRC Directorate:Sustainable Resources

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