Hemispheric Transport of Air Pollution 2010
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Hemispheric Transport of Air Pollution 2010

Part D - Answers to Policy-Relevant Science Questions

This is one part of a four-volume set that presents a state-of-the-science assessment of the intercontinental transport of air pollutants across the Northern Hemisphere. The first three volumes are technical assessments of the state-of-science with respect to intercontinental transport of ozone and particulate matter, mercury, and persistent organic pollutants. The fourth volume is a synthesis of the main findings and recommendations of Parts A, B, and C organized around a series of policy-relevant questions that were identified at the Task Force on Hemispheric Transport of Air Pollution’s first meeting.
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Answers to policy-relevant science questions You do not have access to this content

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Author(s):
Terry Keating, André Zuber

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Ozone (O3), particulate matter (PM), mercury (Hg), and persistent organic pollutants (POPs) are significant environmental problems in many regions of the world. For each of these pollutants, observed concentrations or deposition at any given location can be thought of as composed of several different fractions, one of which is related to the intercontinental atmospheric transport of anthropogenic emissions into the air. Other fractions may be associated with natural emission sources or local and regional anthropogenic sources. Each fraction differs in terms of the emission sources that contribute to it, the temporal and spatial variability of the contribution, and the potential for and sensitivity to emission controls.