Tag Archives: U.S. Environmental Protection Agency (EPA)
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Technical Summary on Background Ozone
In some parts of the United States, background ozone (ozone produced by pollution from outside the U.S. and from natural events) can represent a large fraction of the ozone concentration and result in exceedances of federal air quality standards. This research discusses scientific understanding of the magnitude, spatial variation, temporal trends, and source apportionment of […]
